High Load From Mysql

Mar 11, 2008

I have a dual xeon server that host around 15 small website, but these days I see that the load generated from mysql is very high as you can see below is consumes 32.6 CPU

mysql 32.60 1.20 0.0

how I can know what is the cause of this load?

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Server High Load/high Mysql Usage

Jul 2, 2009

I have a site that is eating up my server resources and need to know what the best solution for this is. I'm thinking of getting another server just for mysql but do not know what specs the server should be to handle the current traffic/database load and have the site run smoothly without slowing down to a snail's pace.

An alternative is to get another server just for the videos being served and leave the database and html on the current server. This is where I'm stuck and don't know what route to take with this.

My current server stats:

Dual Xeon 5130
4GB RAM
250GB
50 Mbit/sec
CentOS 3.9

Website traffic stats:

15,000 visitors/day
150,000 pageviews/day
Serving videos

I've attached screenshots of top and bandwidth usage per day. Hopefully with this information you could tell me if I need another server or if there are any things I can do to the current server to help things move faster.

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MYSQL High Load!

Aug 23, 2007

I am just a beginner and it is about a month that the mysql loads on my server is so high , I have checked the mysql processlist via cpanel and there is no account that takes high mysql and make it high , and even I have checked for any possible rotten databases. but still the server load is so high and I can not control it , even when I restart it just after a minute it goes up again.

just the spamd command takes a high CPU usage sometimes. what it should be from? the spamd for a special account!

I need to optimize mysql , and need help. please do not tell me to hire an expert , just help me thanks

and another question is that how can I check which account is sending spam and stop it?

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High MySQL Load

Feb 15, 2007

MySQL.

Quote:

top - 18:43:24 up 18 days, 18:05, 1 user, load average: 145.13, 92.77, 40.84
Tasks: 145 total, 10 running, 134 sleeping, 0 stopped, 1 zombie
Cpu(s): 28.7% us, 70.6% sy, 0.0% ni, 0.0% id, 0.7% wa, 0.1% hi, 0.0% si
Mem: 1034060k total, 605968k used, 428092k free, 21400k buffers
Swap: 1020088k total, 165076k used, 855012k free, 119448k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6102 mysql 16 0 343m 146m 2868 S 364 14.5 1441:52 mysqld

My server almost went dead... until I rebooted MySQL.

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MySql Die With High Load

Oct 17, 2007

MySql die with high load problem?

My server running: Server Load124.40 (2 cpus)[url] Memory Used70 %[url]
Server info:

Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Xeon(R) CPU 3060 @ 2.40GHz
Processor #1 speed: 2394.840 MHz
Processor #1 cache size: 4096 KB

Processor #2 Vendor: GenuineIntel
Processor #2 Name: Intel(R) Xeon(R) CPU 3060 @ 2.40GHz
Processor #2 speed: 2394.840 MHz
Processor #2 cache size: 4096 KB

Memory Information Memory: 4148800k/4718592k available (1883k kernel code, 43336k reserved, 761k data, 188k init, 3275648k highmem)

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High Mysql Load After Upgrade

Mar 14, 2008

it was very fast until mysql upgraded to 5.0.45 it was 4.. i can’t even turn my forum if it is a busy time cos it is so slow i get page not found after a while but when it is quiet it is not too bad... but it was alot more faster with mysql 4 i don't really want to downgrade please give me some ideas to fix this issue ...........

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MySQL High Server Load

Dec 18, 2008

MySQL the last few days seems to be constantly the most demanding process in top, which it never was before. As far as I can tell, nothing has substantially changed with regards to traffic to MySQL driven sites on the server. Is there anything that might be wrong with the databases, etc., that might throw MySQL into a tizzy?

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HIGH LOAD Because Of MySQL. [merged]

Oct 24, 2007

my server

Intel(R) Xeon(R) CPU E5310
1g

when i use a software update my site.maybe the sofe use mysql and httpd much.

the load of the server ofen goes high.i can only restart httped or mysql .

some info about the server when load is high.

[root@server ~]# free
total used free shared buffers cached
Mem: 1033676 1018980 14696 0 4352 428756
-/+ buffers/cache: 585872 447804
Swap: 2040244 132660 1907584

[root@server ~]# ps aux | grep mysql | wc -l
3
[root@server ~]# ps aux | grep httpd | wc -l
66

[root@server ~]# mysqladmin -u root -p extended-status
Enter password:
+----------------------------+-----------+
| Variable_name | Value |
+----------------------------+-----------+
| Aborted_clients | 2 |
| Aborted_connects | 89 |
| Binlog_cache_disk_use | 0 |
| Binlog_cache_use | 0 |
| Bytes_received | 61741575 |
| Bytes_sent | 11783074 |
| Com_admin_commands | 150 |
| Com_alter_db | 0 |
| Com_alter_table | 0 |
| Com_analyze | 0 |
| Com_backup_table | 0 |
| Com_begin | 0 |
| Com_change_db | 33678 |
| Com_change_master | 0 |
| Com_check | 0 |
| Com_checksum | 0 |
| Com_commit | 0 |
| Com_create_db | 0 |
| Com_create_function | 0 |
| Com_create_index | 0 |
| Com_create_table | 0 |
| Com_dealloc_sql | 0 |
| Com_delete | 3327 |
| Com_delete_multi | 0 |
| Com_do | 0 |
| Com_drop_db | 0 |
| Com_drop_function | 0 |
| Com_drop_index | 0 |
| Com_drop_table | 0 |
| Com_drop_user | 0 |
| Com_execute_sql | 0 |
| Com_flush | 0 |
| Com_grant | 0 |
| Com_ha_close | 0 |
| Com_ha_open | 0 |
| Com_ha_read | 0 |
| Com_help | 0 |
| Com_insert | 6939 |
| Com_insert_select | 0 |
| Com_kill | 0 |
| Com_load | 0 |
| Com_load_master_data | 0 |
| Com_load_master_table | 0 |
| Com_lock_tables | 96 |
| Com_optimize | 1 |
| Com_preload_keys | 0 |
| Com_prepare_sql | 0 |
| Com_purge | 0 |
| Com_purge_before_date | 0 |
| Com_rename_table | 0 |
| Com_repair | 0 |
| Com_replace | 110 |
| Com_replace_select | 0 |
| Com_reset | 0 |
| Com_restore_table | 0 |
| Com_revoke | 0 |
| Com_revoke_all | 0 |
| Com_rollback | 0 |
| Com_savepoint | 0 |
| Com_select | 122075 |
| Com_set_option | 32609 |
| Com_show_binlog_events | 0 |
| Com_show_binlogs | 0 |
| Com_show_charsets | 0 |
| Com_show_collations | 0 |
| Com_show_column_types | 0 |
| Com_show_create_db | 0 |

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High Load And Mysql Errors

Jun 17, 2007

My server very slow and the is very loaded. How can I fix this problem? My server specialities and loaded softwares which are below. And sometimes there is "mysql connect failed", "Lost connection to MySQL server during query" errors. Thanks for kinds...

---
Speed:
100Mbs

LOAD:
Load avarage : 5-30 +
Cpu usage: %30-95 +
Ram usage: %70-95 +

SYSTEM INFO:
2gb ram, P4 3200 cpu, 2x250 GB SATAII hdd, Plesk 8.1.1, centos 4.5 os, apache 2.0.59, php 4.4.7, mysql 4.1.21(client),
mysql 5.0.41(server), zend optimizer, kernel 2.6.19.1.SM #5 SMP, mod_evasive, plesk firewall, qscanq+clamav,
spamassain and system up-to-date.

SOFTWARE:
phpbb 2.0.22
4images 1.7.4
joomla 1.0.12

ONLINE USER:
100-500 user online
on 2 website

How to optimization?

I installed tuning-primer.sh

but I can’t understand this code:
I don’t know. How to set values, example?
NOTE: Red value

-------------------------
[root@lavinya bin]# tuning-primer.sh

-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -

MySQL Version 5.0.41-log i686

Uptime = 3 days 4 hrs 34 min 17 sec
Avg. qps = 92
Total Questions = 25406284
Threads Connected = 1

Server has been running for over 48hrs.
It should be safe to follow these recommendations

To find out more information on how each of these
runtime variables effects performance visit:
.............

SLOW QUERIES
Current long_query_time = 5 sec.
You have 115 out of 25406302 that take longer than 5 sec. to complete
The slow query log is enabled.
Your long_query_time seems to be fine

WORKER THREADS
Current thread_cache_size = 8
Current threads_cached = 7
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 500
Current threads_connected = 2
Historic max_used_connections = 110
The number of used connections is 22% of the configured maximum.
Your max_connections variable seems to be fine.

MEMORY USAGE
Max Memory Ever Allocated : 835 M
Configured Max Per-thread Buffers : 3 G
Configured Max Global Buffers : 46 M
Configured Max Memory Limit : 3 G
Total System Memory : 3.96 G

Max memory limit exceeds 85% of total system memory

KEY BUFFER
Current MyISAM index space = 35 M
Current key_buffer_size = 32 M
Key cache miss rate is 1 : 73658
Key buffer fill ratio = 34.00 %
Your key_buffer_size seems to be too high.
Perhaps you can use these resources elsewhere

QUERY CACHE
Query cache is enabled
Current query_cache_size = 4 M
Current query_cache_used = 1 M
Current query_cach_limit = 1 M
Current Query cache fill ratio = 29.83 %
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 2 M
Current record/read_rnd_buffer_size = 1 M
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 1.00 M
You have had 14127 queries where a join could not use an index properly
You should enable "log-queries-not-using-indexes"
Then look for non indexed joins in the slow query log.
If you are unable to optimize your queries you may want to increase your
join_buffer_size to accommodate larger joins in one pass.

Note! This script will still suggest raising the join_buffer_size when
ANY joins not using indexes are found.

OPEN FILES LIMIT
Current open_files_limit = 2500 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine

TABLE CACHE
Current table_cache value = 256 tables
You have a total of 636 tables
You have 256 open tables.
Current table_cache hit rate is 1% , while 100% of your table cache is in use
You should probably increase your table_cache

TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 2271787 temp tables, 3% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fine

TABLE SCANS
Current read_buffer_size = 1 M
Current table scan ratio = 28 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio =1 : 112
You may benefit from selective use of InnoDB.
If you have long running SELECT's against MyISAM tables and perform
frequent updates consider setting 'low_priority_updates=1'
If you have a high concurrentcy of inserts on Dynamic row-length tables
consider setting 'concurrent_insert=2'.

[root@lavinya bin]#
----------------------

if your reply me message I will be happy

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Mysql High CPU Load - Totally Stumped

Jul 26, 2009

Quad Core server, 4GB ram. MySQL runs at all times between 200 - 300% CPU. Server does only 5K unique per day, and runs zen cart.

I am at a loss, I have experiece with tracking dowen reasons for this but this one has stumpped me. So I was hoping to get new eyes on this and see if anyone had any ideas.

my.cnf

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
#old_passwords=1
skip-locking
skip-name-resolve
skip-bdb
key_buffer = 64M
max_allowed_packet = 16M
table_cache = 2048
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 16
thread_concurrency = 8
query_cache_size = 25M
query_cache_type = 1
tmp_table_size=64M
back_log = 100
max_connect_errors = 10000
join_buffer_size=1M
open-files = 20000

interactive_timeout = 300
wait_timeout = 300

max_connections=200

# The following directives should be commented out
# but included as they are things that get added
# very frequently on tickets. These are more in a
# need-this-feature basis.

# The below 2 cannot be set on the fly. If the customer already has
# InnoDB tables and wants to change the size of the InnoDB tablespace
# and InnoDB logs, then:
# 1. Run a full backup with mysqldump
# 2. Stop MySQL
# 3. Move current ibdata and ib_logfiles out of /var/lib/mysql
# 4. Uncomment the below innodb_data_file_path and innodb_log_file_size
# 5. Start MySQL (it will recreate new InnoDB files)
# 6. Restore data from backup
#innodb_data_file_path = ibdata1:2000M;ibdata2:10M:autoextend
#innodb_log_file_size = 100M

innodb_buffer_pool_size = 64M
innodb_additional_mem_pool_size = 8M

#log-slow-queries=/var/lib/mysqllogs/slow-log
#long_query_time=2
#log-queries-not-using-indexes

#log-bin=/var/lib/mysqllogs/bin-log
#log-slave-updates
#expire_logs_days = 14
server-id = 1

[mysql.server]
user=mysql
#basedir=/var/lib

[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
open_files_limit=65536
mysqladmin status

Uptime: 1458 Threads: 1 Questions: 366975 Slow queries: 0 Opens: 401 Flush tables: 1 Open tables: 395 Queries per second avg: 251.698
SHOW STATUS;

mysql> SHOW STATUS;

+-----------------------------------+----------+
| Variable_name | Value |
+-----------------------------------+----------+
| Aborted_clients | 0 |
| Aborted_connects | 8 |
| Binlog_cache_disk_use | 0 |
| Binlog_cache_use | 0 |
| Bytes_received | 116 |
| Bytes_sent | 157 |
| Com_admin_commands | 0 |
| Com_alter_db | 0 |
| Com_alter_table | 0 |
| Com_analyze | 0 |
| Com_backup_table | 0 |
| Com_begin | 0 |
| Com_call_procedure | 0 |
| Com_change_db | 0 |
| Com_change_master | 0 |
| Com_check | 0 |
| Com_checksum | 0 |
| Com_commit | 0 |
| Com_create_db | 0 |
| Com_create_function | 0 |
| Com_create_index | 0 |
| Com_create_table | 0 |
| Com_create_user | 0 |
| Com_dealloc_sql | 0 |
| Com_delete | 0 |
| Com_delete_multi | 0 |
| Com_do | 0 |
| Com_drop_db | 0 |
| Com_drop_function | 0 |
| Com_drop_index | 0 |
| Com_drop_table | 0 |
| Com_drop_user | 0 |
| Com_execute_sql | 0 |
| Com_flush | 0 |
| Com_grant | 0 |
| Com_ha_close | 0 |
| Com_ha_open | 0 |
| Com_ha_read | 0 |
| Com_help | 0 |
| Com_insert | 0 |
| Com_insert_select | 0 |
| Com_kill | 0 |
| Com_load | 0 |
| Com_load_master_data | 0 |
| Com_load_master_table | 0 |
| Com_lock_tables | 0 |
| Com_optimize | 0 |
| Com_preload_keys | 0 |
| Com_prepare_sql | 0 |
| Com_purge | 0 |
| Com_purge_before_date | 0 |
| Com_rename_table | 0 |
| Com_repair | 0 |
| Com_replace | 0 |
| Com_replace_select | 0 |
| Com_reset | 0 |
| Com_restore_table | 0 |
| Com_revoke | 0 |
| Com_revoke_all | 0 |
| Com_rollback | 0 |
| Com_savepoint | 0 |
| Com_select | 1 |
| Com_set_option | 0 |
| Com_show_binlog_events | 0 |
| Com_show_binlogs | 0 |
| Com_show_charsets | 0 |
| Com_show_collations | 0 |
| Com_show_column_types | 0 |
| Com_show_create_db | 0 |
| Com_show_create_table | 0 |
| Com_show_databases | 0 |
| Com_show_errors | 0 |
| Com_show_fields | 0 |
| Com_show_grants | 0 |
| Com_show_innodb_status | 0 |
| Com_show_keys | 0 |
| Com_show_logs | 0 |
| Com_show_master_status | 0 |
| Com_show_ndb_status | 0 |
| Com_show_new_master | 0 |
| Com_show_open_tables | 0 |
| Com_show_privileges | 0 |
| Com_show_processlist | 0 |
| Com_show_slave_hosts | 0 |
| Com_show_slave_status | 0 |
| Com_show_status | 1 |
| Com_show_storage_engines | 0 |
| Com_show_tables | 0 |
| Com_show_triggers | 0 |
| Com_show_variables | 0 |
| Com_show_warnings | 0 |
| Com_slave_start | 0 |
| Com_slave_stop | 0 |
| Com_stmt_close | 0 |
| Com_stmt_execute | 0 |
| Com_stmt_fetch | 0 |
| Com_stmt_prepare | 0 |
| Com_stmt_reset | 0 |
| Com_stmt_send_long_data | 0 |
| Com_truncate | 0 |
| Com_unlock_tables | 0 |
| Com_update | 0 |
| Com_update_multi | 0 |
| Com_xa_commit | 0 |
| Com_xa_end | 0 |
| Com_xa_prepare | 0 |
| Com_xa_recover | 0 |
| Com_xa_rollback | 0 |
| Com_xa_start | 0 |
| Compression | OFF |
| Connections | 1569 |
| Created_tmp_disk_tables | 0 |
| Created_tmp_files | 5 |
| Created_tmp_tables | 1 |
| Delayed_errors | 0 |
| Delayed_insert_threads | 0 |
| Delayed_writes | 0 |
| Flush_commands | 1 |
| Handler_commit | 0 |
| Handler_delete | 0 |
| Handler_discover | 0 |
| Handler_prepare | 0 |
| Handler_read_first | 0 |
| Handler_read_key | 0 |
| Handler_read_next | 0 |
| Handler_read_prev | 0 |
| Handler_read_rnd | 0 |
| Handler_read_rnd_next | 0 |
| Handler_rollback | 0 |
| Handler_savepoint | 0 |
| Handler_savepoint_rollback | 0 |
| Handler_update | 0 |
| Handler_write | 132 |
| Innodb_buffer_pool_pages_data | 307 |
| Innodb_buffer_pool_pages_dirty | 0 |
| Innodb_buffer_pool_pages_flushed | 1 |
| Innodb_buffer_pool_pages_free | 3787 |
| Innodb_buffer_pool_pages_latched | 0 |
| Innodb_buffer_pool_pages_misc | 2 |
| Innodb_buffer_pool_pages_total | 4096 |
| Innodb_buffer_pool_read_ahead_rnd | 2 |
| Innodb_buffer_pool_read_ahead_seq | 0 |
| Innodb_buffer_pool_read_requests | 48197 |
| Innodb_buffer_pool_reads | 205 |
| Innodb_buffer_pool_wait_free | 0 |
| Innodb_buffer_pool_write_requests | 1 |
| Innodb_data_fsyncs | 7 |
| Innodb_data_pending_fsyncs | 0 |
| Innodb_data_pending_reads | 0 |
| Innodb_data_pending_writes | 0 |
| Innodb_data_read | 7213056 |
| Innodb_data_reads | 221 |
| Innodb_data_writes | 7 |
| Innodb_data_written | 35328 |
| Innodb_dblwr_pages_written | 1 |
| Innodb_dblwr_writes | 1 |
| Innodb_log_waits | 0 |
| Innodb_log_write_requests | 0 |
| Innodb_log_writes | 2 |
| Innodb_os_log_fsyncs | 5 |
| Innodb_os_log_pending_fsyncs | 0 |
| Innodb_os_log_pending_writes | 0 |
| Innodb_os_log_written | 1024 |
| Innodb_page_size | 16384 |
| Innodb_pages_created | 0 |
| Innodb_pages_read | 307 |
| Innodb_pages_written | 1 |
| Innodb_row_lock_current_waits | 0 |
| Innodb_row_lock_time | 0 |
| Innodb_row_lock_time_avg | 0 |
| Innodb_row_lock_time_max | 0 |
| Innodb_row_lock_waits | 0 |
| Innodb_rows_deleted | 0 |
| Innodb_rows_inserted | 0 |
| Innodb_rows_read | 165 |
| Innodb_rows_updated | 0 |
| Key_blocks_not_flushed | 0 |
| Key_blocks_unused | 52512 |
| Key_blocks_used | 1074 |
| Key_read_requests | 24616475 |
| Key_reads | 1170 |
| Key_write_requests | 11301 |
| Key_writes | 4948 |
| Last_query_cost | 0.000000 |
| Max_used_connections | 13 |
| Not_flushed_delayed_rows | 0 |
| Open_files | 495 |
| Open_streams | 0 |
| Open_tables | 395 |
| Opened_tables | 0 |
| Prepared_stmt_count | 0 |
| Qcache_free_blocks | 440 |
| Qcache_free_memory | 2620672 |
| Qcache_hits | 293141 |
| Qcache_inserts | 69381 |
| Qcache_lowmem_prunes | 60094 |
| Qcache_not_cached | 20918 |
| Qcache_queries_in_cache | 1338 |
| Qcache_total_blocks | 5755 |
| Questions | 394590 |
| Rpl_status | NULL |
| Select_full_join | 0 |
| Select_full_range_join | 0 |
| Select_range | 0 |
| Select_range_check | 0 |
| Select_scan | 1 |
| Slave_open_temp_tables | 0 |
| Slave_retried_transactions | 0 |
| Slave_running | OFF |
| Slow_launch_threads | 0 |
| Slow_queries | 0 |
| Sort_merge_passes | 0 |
| Sort_range | 0 |
| Sort_rows | 0 |
| Sort_scan | 0 |
| Ssl_accept_renegotiates | 0 |
| Ssl_accepts | 0 |
| Ssl_callback_cache_hits | 0 |
| Ssl_cipher | |
| Ssl_cipher_list | |
| Ssl_client_connects | 0 |
| Ssl_connect_renegotiates | 0 |
| Ssl_ctx_verify_depth | 0 |
| Ssl_ctx_verify_mode | 0 |
| Ssl_default_timeout | 0 |
| Ssl_finished_accepts | 0 |
| Ssl_finished_connects | 0 |
| Ssl_session_cache_hits | 0 |
| Ssl_session_cache_misses | 0 |
| Ssl_session_cache_mode | NONE |
| Ssl_session_cache_overflows | 0 |
| Ssl_session_cache_size | 0 |
| Ssl_session_cache_timeouts | 0 |
| Ssl_sessions_reused | 0 |
| Ssl_used_session_cache_entries | 0 |
| Ssl_verify_depth | 0 |
| Ssl_verify_mode | 0 |
| Ssl_version | |
| Table_locks_immediate | 173929 |
| Table_locks_waited | 3 |
| Tc_log_max_pages_used | 0 |
| Tc_log_page_size | 0 |
| Tc_log_page_waits | 0 |
| Threads_cached | 11 |
| Threads_connected | 2 |
| Threads_created | 13 |
| Threads_running | 2 |
| Uptime | 1540 |
| Uptime_since_flush_status | 1540 |
+-----------------------------------+----------+

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High Server Load ... With Mysql Optimization

Apr 21, 2008

So the site got featured on [url]and now the server is drowning...

The Coppermine Gallery usually hovers around 30~50 users daily and now, 1800, and im at a lost as how I should configure mysql to take on such a load. right now it takes about 10 secs or more to load a page and sometimes it would time out. Because it si coppermine, all pages are dynamic and can't be cached -_-"

Here's the my.cnf right now after i played around with the numbers

server spec
Opteron 170 (2ghz)
2gb ram
250 7200rpm

[mysqld]
set-variable=local-infile=0
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1
#skip-networking
back_log = 75
key_buffer = 256M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 1800
thread_cache_size = 384
wait_timeout = 7200
max_connections = 600
connect_timeout = 100
wait_timeout = 12000
tmp_table_size = 100M
max_heap_table_size = 64M
max_allowed_packet = 15M
max_connect_errors = 9999999
read_rnd_buffer_size = 524288
bulk_insert_buffer_size = 8M
query_cache_limit = 40M
query_cache_size = 150M
query_cache_type = 1
query_prealloc_size = 65536
tmp_table_size = 64M
query_alloc_block_size = 131072
default-storage-engine = MyISAM

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
nice = -5
open_files_limit = 8192

[mysqldump]
quick
max_allowed_packet = 16M

[myisamchk]
key_buffer = 64M
sort_buffer = 64M
read_buffer = 16M
write_buffer = 16M
httpd.conf

Timeout 20

#
# KeepAlive: Whether or not to allow persistent connections (more than
# one request per connection). Set to "Off" to deactivate.
#
KeepAlive Off

#
# MaxKeepAliveRequests: The maximum number of requests to allow
# during a persistent connection. Set to 0 to allow an unlimited amount.
# We recommend you leave this number high, for maximum performance.
#
MaxKeepAliveRequests 100

#
# KeepAliveTimeout: Number of seconds to wait for the next request from the
# same client on the same connection.
#
KeepAliveTimeout 15

##
## Server-Pool Size Regulation (MPM specific)
##

# prefork MPM
# StartServers: number of server processes to start
# MinSpareServers: minimum number of server processes which are kept spare
# MaxSpareServers: maximum number of server processes which are kept spare
# ServerLimit: maximum value for MaxClients for the lifetime of the server
# MaxClients: maximum number of server processes allowed to start
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule prefork.c>
StartServers 8
MinSpareServers 5
MaxSpareServers 20
ServerLimit 200
MaxClients 200
MaxRequestsPerChild 1500
</IfModule>

# worker MPM
# StartServers: initial number of server processes to start
# MaxClients: maximum number of simultaneous client connections
# MinSpareThreads: minimum number of worker threads which are kept spare
# MaxSpareThreads: maximum number of worker threads which are kept spare
# ThreadsPerChild: constant number of worker threads in each server process
# MaxRequestsPerChild: maximum number of requests a server process serves
<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>

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Automatically Restart Mysql After High Server Load

Jan 29, 2009

Anyone know a good script that I can run with cron or something? Mysql seems to be the #1 problem with a lot of my web sites, a restart usually fixes it right away for me, but I can't keep restarting my servers everyday manually.

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Mysql Deleted Several Tables Under High Server Load

Apr 27, 2007

we have mysql 5 setup and this morning at around 10:07 tables started disappearing as they were being accessed by different clients.

Databases that had 40 tables now had 30, etc. Only the tables that were attempted to be accessed were gone. This is the first time something like this has happened.

The following output was given:

This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware.

We will try our best to scrape up some info that will hopefully help diagnose the
problem, but since we have already crashed, something is definitely wrong and this may fail.

key_buffer_size=8388600
read_buffer_size=131072
max_used_connections=208
max_connections=500
threads_connected=156
It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 1096188 K
bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

thd=0xaf82930
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...

Cannot determine thread, fp=0xb143932c, backtrace may not be correct.

Stack range sanity check OK, backtrace follows:
0x816b1a0
0xaf1898
0x20
0x81ac49d
0x8182914
0x8189010
0x8189df1
0x818a738
0x818ae5c
0xaeb371
0x9c4ffe
New value of fp=(nil) failed sanity check, terminating stack trace!
Please read [url]and follow instructions on how to resolve the stack trace. Resolved
stack trace is much more helpful in diagnosing the problem, so please do
resolve it
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0xaf36620 = SELECT * FROM `sessions` WHERE `PHPSESSID` = '5e6775cd3c6f187d8c575127ba73be19'
thd->thread_id=113407
The manual page at [url]contains
information that should help you find out what is causing the crash.
mysqld: my_new.cc:51: int __cxa_pure_virtual(): Assertion `"Pure virtual method called." == "Aborted"' failed.

Number of processes running now: 0
070427 10:07:49 mysqld restarted
070427 10:07:50 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
070427 10:07:53 InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 227822203.
InnoDB: Doing recovery: scanned up to log sequence number 0 227822203
070427 10:07:53 InnoDB: Started; log sequence number 0 227822203
070427 10:07:54 [Note] /usr/sbin/mysqld: ready for connections.

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High Server Load / High Swap / Lots Of Httpd

Feb 20, 2008

I have a cPanel server with 4GB RAM

My server hangs time to time, once or twice a day. This is the last status when it happens.

Server Load 75.90 (2 cpus)
Memory Used 92 %
Swap Used 65.78 %

When I was still inside SSH when it happens, the processes I can see inside "top" are a lot of httpd processes.

So I "killall -9 httpd", I had to do it 30~40 times

#killall -9 httpd
#killall -9 httpd
#killall -9 httpd
x 30~40 times until no pid process found & the server load is back to normal.

Before that, I check httpd fullstatus, they look very normal, same goes to what I see inside WHM Apache status & cpu usage status.

At first I thought it was a memory problem after consulting with a server admin, so I replaced all 4GB new ram stick (such a waste)

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My Server Is Very Slow, High CPU, High Apache Load

Oct 31, 2009

My server is very slow, High CPU, High Apache load....

I got a new server and i had setup a script on it.

No server tweaks has been done.

I run a filehosting site so it gets very slow when traffic is high.

Here is some info:

Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4135 filedip 19 0 12812 8892 2212 R 18.9 0.4 0:00.74 index.cgi
3140 apache 15 0 22624 9604 2768 S 17.3 0.5 1:54.45 httpd
3556 apache 15 0 22792 9592 2768 S 17.3 0.5 0:43.53 httpd
3739 apache 15 0 22672 9556 2744 S 17.3 0.5 1:09.67 httpd
3884 apache 15 0 22664 9560 2744 S 17.3 0.5 0:23.98 httpd
3474 apache 15 0 22672 9572 2756 R 16.1 0.5 1:34.09 httpd
3548 apache 15 0 22792 9560 2740 S 16.1 0.5 1:33.67 httpd
3991 apache 15 0 22640 9588 2756 S 15.1 0.5 0:22.44 httpd
3475 apache 15 0 22672 9580 2756 S 13.2 0.5 1:31.42 httpd
3493 apache 15 0 22664 9592 2768 S 12.9 0.5 1:15.52 httpd
3769 apache 15 0 22664 9580 2756 S 12.9 0.5 0:45.19 httpd
3638 apache 15 0 22664 9576 2756 S 12.3 0.5 0:32.82 httpd
3724 apache 16 0 22664 9580 2756 R 12.3 0.5 0:34.25 httpd
3626 apache 15 0 22672 9580 2756 S 11.7 0.5 0:52.54 httpd
4023 apache 16 0 22792 9560 2740 R 11.3 0.5 0:13.16 httpd
3882 apache 15 0 22664 9576 2756 S 10.1 0.5 0:38.56 httpd
3005 apache 15 0 22672 9588 2768 R 9.1 0.5 2:06.61 httpd

I dont know much about server managment...

how to fix this so server doesnt go slow?

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High Load From High Iowait

Jul 2, 2008

I am running in a High load problem lately. I have one of those cheap 1and1 servers which was running fine until 2 weeks ago. Once I rebooted accidentaly, it did not come back with some unrepairable kernel errors and I had to re-image it.

I chose to reimage the server with CentOS 5, for better support. The new re-image worked fine for some days, at least so I thought and now I am having high loads. The server crashes if not monitored every moment as the load is unpredictable.

Just a restart of the Apache will bring the server back to normality, but I am not sure if it is apache or some other script to be blamed.
I have beeing monitoring through apache server-status, but I cannot organize something unusual in the high load moments.

At this moment for example:

top - 09:00:36 up 15:43, 3 users, load average: 3.57, 4.60, 5.32
Tasks: 144 total, 2 running, 142 sleeping, 0 stopped, 0 zombie
Cpu(s): 10.6%us, 6.5%sy, 0.0%ni, 18.7%id, 63.5%wa, 0.2%hi, 0.5%si, 0.0%st

12:00:29 AM CPU %user %nice %system %iowait %steal %idle
12:10:01 AM all 9.14 0.00 5.52 44.66 0.00 40.68
12:20:14 AM all 6.83 0.00 3.98 27.88 0.00 61.32
12:30:10 AM all 6.44 0.00 4.20 81.25 0.00 8.11
12:40:09 AM all 5.25 0.00 4.09 81.93 0.00 8.73
12:50:15 AM all 5.11 0.00 3.79 90.74 0.00 0.36
01:00:07 AM all 7.22 0.00 4.52 57.11 0.00 31.15
01:10:13 AM all 6.89 0.00 4.01 55.38 0.00 33.71
01:20:14 AM all 4.37 0.00 3.27 41.88 0.00 50.48
01:30:25 AM all 4.26 0.00 3.29 63.42 0.00 29.03
01:40:06 AM all 27.18 0.00 4.75 58.27 0.00 9.80
01:50:03 AM all 29.64 0.00 6.61 51.50 0.00 12.25
02:00:07 AM all 27.00 0.00 8.48 55.49 0.00 9.03
02:10:10 AM all 19.29 0.00 4.97 73.80 0.00 1.94
02:20:04 AM all 37.85 0.00 6.78 40.70 0.00 14.67
02:30:05 AM all 15.65 0.00 4.80 68.47 0.00 11.08
02:40:08 AM all 9.06 0.00 5.60 37.49 0.00 47.86
02:50:07 AM all 5.36 0.00 3.62 42.29 0.00 48.73
03:00:02 AM all 6.05 0.00 4.08 47.27 0.00 42.60
03:10:02 AM all 4.22 0.00 3.68 38.17 0.00 53.93
03:20:02 AM all 4.06 0.00 3.75 41.37 0.00 50.82
03:30:22 AM all 4.42 0.00 3.93 45.25 0.00 46.41
03:40:11 AM all 4.34 0.00 3.95 39.58 0.00 52.13
03:50:02 AM all 4.67 0.00 4.01 32.53 0.00 58.80
04:00:08 AM all 3.72 0.00 3.87 28.40 0.00 64.02
04:10:02 AM all 13.49 0.00 6.58 20.82 0.00 59.10
04:20:01 AM all 6.70 0.00 4.63 6.06 0.00 82.61
04:30:02 AM all 1.44 0.00 1.21 4.75 0.00 92.59
04:40:01 AM all 12.42 0.00 8.12 7.65 0.00 71.81
04:50:02 AM all 1.43 0.00 1.07 4.02 0.00 93.47
05:00:02 AM all 1.60 0.00 1.40 8.62 0.00 88.38
05:10:10 AM all 3.80 0.00 3.02 17.86 0.00 75.32
05:20:06 AM all 5.10 0.00 4.22 23.34 0.00 67.34
05:30:02 AM all 1.54 0.00 1.40 11.22 0.00 85.85
05:40:05 AM all 1.75 0.00 1.89 13.12 0.00 83.23
05:50:12 AM all 2.15 0.00 2.22 18.92 0.00 76.72
06:00:02 AM all 1.92 0.00 2.01 12.87 0.00 83.20
06:10:02 AM all 2.27 0.00 2.16 11.53 0.00 84.04
06:20:03 AM all 3.56 0.00 3.02 25.26 0.00 68.16
06:30:10 AM all 2.66 0.00 2.05 18.13 0.00 77.16
06:40:02 AM all 2.58 0.00 2.25 22.87 0.00 72.30
06:50:02 AM all 2.68 0.00 1.92 15.77 0.00 79.63
07:00:03 AM all 3.06 0.00 2.48 26.01 0.00 68.46
07:10:03 AM all 3.65 0.00 3.20 36.54 0.00 56.61

07:10:03 AM CPU %user %nice %system %iowait %steal %idle
07:20:03 AM all 4.40 0.00 3.28 43.86 0.00 48.46
07:30:02 AM all 4.10 0.00 3.17 31.30 0.00 61.43
07:40:06 AM all 7.67 0.00 3.95 50.79 0.00 37.59
07:50:02 AM all 4.72 0.00 3.11 44.30 0.00 47.86
08:00:03 AM all 5.57 0.00 3.72 47.15 0.00 43.56
08:10:07 AM all 10.66 0.00 3.59 71.62 0.00 14.13
08:20:17 AM all 5.67 0.00 3.42 58.81 0.00 32.10
08:30:10 AM all 11.12 0.00 3.49 76.71 0.00 8.67
08:40:03 AM all 7.00 0.00 3.36 47.94 0.00 41.71
Average: all 7.53 0.00 3.76 38.90 0.00 49.81
Some configurations:
The reimage partittioning looks like this:

/dev/sda1 950M 138M 765M 16% /
/dev/sda5 4.7G 1.9G 2.9G 40% /usr
/dev/sda7 63G 58G 5.0G 93% /var
/dev/sda6 4.7G 23M 4.7G 1% /home
none 1.0G 500K 1.0G 1% /tmp

KeepAlive On
MaxKeepAliveRequests 300
KeepAliveTimeout 15

<IfModule prefork.c>
StartServers 10
MinSpareServers 20
MaxSpareServers 50
ServerLimit 256
MaxClients 180
MaxRequestsPerChild 2000
</IfModule>

<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

skip-locking
query_cache_limit=1M
query_cache_size=32M
query_cache_type=1
max_connections=250
interactive_timeout=100
wait_timeout=20
connect_timeout=10
thread_cache_size=80
key_buffer=64M
join_buffer=1M
max_allowed_packet=16M
table_cache=512
record_buffer=1M
sort_buffer_size=1M
read_buffer_size=1M
max_connect_errors=10
thread_concurrency=2
read_rnd_buffer_size=1M
myisam_sort_buffer_size=64M
server-id=1

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 3
model name : Intel(R) Pentium(R) 4 CPU 2.80GHz
stepping : 4
cpu MHz : 2793.324
cache size : 1024 KB

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High CPU Load But No High Process

Nov 8, 2008

I have extremely high CPU load average, but when I run TOP command there are not any process with high CPU

CPU load averages:
211.65 (1 min) 227.29 (5 mins) 247.89 (15 mins)
Tasks: 364 total, 2 running, 360 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.0%us, 0.3%sy, 0.0%ni, 0.0%id, 99.7%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2065460k total, 2012372k used, 53088k free, 60964k buffers
Swap: 2040212k total, 3280k used, 2036932k free, 619900k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
19871 root 15 0 4944 2488 1656 R 1 0.1 0:02.73 top
1 root 15 0 4208 1320 1136 S 0 0.1 0:01.55 init
2 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0 0.0 0:01.77 ksoftirqd/0
4 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/1
5 root 34 19 0 0 0 S 0 0.0 0:01.16 ksoftirqd/1
6 root 10 -5 0 0 0 S 0 0.0 0:01.04 events/0
7 root 10 -5 0 0 0 S 0 0.0 0:00.65 events/1
8 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper
9 root 11 -5 0 0 0 S 0 0.0 0:00.00 kthread
35 root 10 -5 0 0 0 S 0 0.0 0:00.15 kblockd/0
36 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/1
37 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid
127 root 10 -5 0 0 0 S 0 0.0 0:13.16 ata/0
128 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/1
129 root 10 -5 0 0 0 D 0 0.0 0:01.15 ata_aux
130 root 10 -5 0 0 0 S 0 0.0 0:00.00 kseriod
158 root 16 0 0 0 0 S 0 0.0 0:00.00 pdflush
159 root 15 0 0 0 0 D 0 0.0 0:01.00 pdflush
160 root 10 -5 0 0 0 S 0 0.0 0:10.68 kswapd0
161 root 11 -5 0 0 0 S 0 0.0 0:00.00 aio/0

So my server is "unresponsive" for abour 18 hours, burst net didnt answer my tickets and I dont know what to do. Ive been with this setup for almost 5 months with no problems, No changes have been made to hardware or software.

Im using Centos 5.0

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High VPS Load

Jun 24, 2009

My VPS holds about 80 domains and low-use accounts.

Every night, from around 1.30am, the load suddenly skyrockets and will usually be around 5 to 10 for a few hours. Occasionally it'll spike to 30+ for a few minutes.

I had some antispam software running, and a couple of other packages (mail queues, mail manage etc), so I disabled all of that and removed all the crontab entries etc.

It's not really made any difference.

I can see the load stats going back 8 hours, as part of the ASSP spam package (I've just left the ASSP server load cron running just so I can continue monitoring it!)

Can the apparent load on my VPS be caused by other VPS's on the same node?? So in reality, my load is fine but is being affected by other people's VPS's?

I hope that makes sense. I'm 99% sure that my VPS is 'clean' (in so far as cron entries)

I'm asking the question because I took a second VPS on the same node and that one too has high loads overnight when there's nothing running on it (ie, no add-on software, no Cpanel accounts added)

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What Causes High Load

Apr 19, 2009

I have a VPS with LXadmin control panel and 1024 Ram.

the memory always 333-450 but now it is more than 800 and the VPS stopped I restarted it many times but after restarting it the memory gone crazy again.

So, how to know what causes high load and eating my Memory?

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BFD And APF Cause High Load

Feb 6, 2008

when i install BFD and APF on my server thie processes appears every time on "top" commad on my server and it cuse hight load

------------------------------
4766 root 25 0 100 10:22.56 3.2 165m 130m 420 R grep -vf /usr/local/bfd/tmp/attack.pool.tmp
7747 root 25 0 100 30:20.34 9.8 430m 397m 420 R grep -vf /usr/local/bfd/tmp/attack.pool.tmp
----------------------------

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What Should I Consider A High Load On VPS

Jun 30, 2007

Just signed up for a VPS with solarvps, which so far is lightning fast compared to my shared reseller account with RZ.

I want to create a script which checks the server load and drops me a text message on my mobile if the server load hits a certain level.

Just wondering what I should consider a high server load?

The server is the JupiterLX UK one from solar vps with over just over 800mb of SLM RAM.

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High Load

May 11, 2007

Im in a VPS and everyday at the same hour goes very slowly due to high load problems.

The main site is a vBulletin forum and I get this error:
Too many connections

Ive change some details in my.cnf:

Quote:

max_connections=500
max_user_connections=70

But it didnt solve the problem.

This high load occurs at the same hour, I think that it is a cron job related problem, but this is my /etc/crontab

Quote:

# cat crontab
SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

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Load High

Nov 28, 2007

i was previously using maxclients 256 in httpd.conf and the load was normal even when the server was processing 256 requests..

recently i had changed it to 320 coz of which my load had increased a lot.. Now when i have decreased it back to 256 the load is still high even when the no of requests are just 150..

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High Load

Mar 18, 2007

i have trouble with transport from company to another company

and i had problem with the best company ( resellerzoom.com )

i order one month this palnt ( Failover Plans ) then i swa this messeage

[PHP]

Hello,

Accounts usage is very high, MEMORY usage is very high than allowed limit of 3% for Daily average. You still have Cpanel/FTp access.

========================

Account usage Daily average

Average CPU%:- 1.23
Average MEM%:- 3.24

Top Process %CPU 58.0
PHP Code:

Top Process %CPU 54.0 /usr/bin/php forumdisplay.phpTop Process %CPU 52.0 /usr/bin/php showthread.php 

i asked him what's can i do?

he toled me

PHP Code:

Upgrade to VPS or Semi-dedicated server 

i don't want Upgrade vps with same company

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High Load

Dec 30, 2007

How can you tell if your server was a victim of a DDOS attack? Server load goes so high that you cannot get in via SSH, and the server has to be power cycled to get back online. When it comes back online, load goes back up, we shut apache down, and the let the load come back down and then restart apache and everything is fine. Any way to determine what caused the load to skyrocket? System has APF, BFD, and mod_evasive installed.

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High Load

Oct 5, 2007

I have 2 servers

Dual Quad Core 5310

One for Mysql and the other one for Httpd

I have one large website , when i put this website in one server i mean by one server is making the website work with mysql and httpd in one server no external server it's load seems to be on 1 - 5 but when i but the mysql on other server the load got high and i got high httpd connections , also when i try to see the the amount connections between the servers it's too high in one of them and low in the other and i am always suffering from load .

here the details
192.168.0.1 the mysql server
192.168.0.2 httpd server

[root@httpd etc]# netstat -n | grep 192.168 | wc -l
453

this the mysql server my.cnf conf
[root@mysql ~]# cat /etc/my.cnf
[mysqld]
safe-show-database
skip-name-resolve
skip-innodb
max_connections = 800
key_buffer = 96M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 2500
thread_cache_size = 384
wait_timeout = 30
connect_timeout = 10
tmp_table_size = 128M
max_heap_table_size = 128M
max_allowed_packet = 64M
max_connect_errors = 10
thread_concurrency = 8
read_rnd_buffer_size = 1M
bulk_insert_buffer_size = 8M
query_cache_limit = 8M
query_cache_size = 128M
query_cache_type = 1
query_prealloc_size = 131072
query_alloc_block_size = 65536

[mysqld_safe]
nice = -10
open_files_limit = 8192

[mysqldump]
quick
max_allowed_packet = 16M

[myisamchk]
key_buffer = 64M
sort_buffer = 64M
read_buffer = 16M
write_buffer = 16M

[mysqlhotcopy]
interactive-timeout

[root@mysql ~]#

this the httpd.conf config
Timeout 30
KeepAlive On
MaxKeepAliveRequests 120
KeepAliveTimeout 1
MinSpareServers 15
MaxSpareServers 25
StartServers 15
MaxClients 256
MaxRequestsPerChild 1000

here the total connections in the mysql server
[root@mysql ~]# netstat -n | grep 192.168 | wc -l
25
[root@mysql ~]#

[root@mysql ~]# netstat -n | grep 192.168
tcp 0 0 192.168.0.1:3306 192.168.0.2:47876 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:48923 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46610 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47142 TIME_WAIT
tcp 0 0 192.168.0.1:3306 192.168.0.2:49209 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:44344 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:44365 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:44359 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46406 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:44355 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:44352 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:48217 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47208 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46463 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47229 TIME_WAIT
tcp 0 0 192.168.0.1:3306 192.168.0.2:46459 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47987 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46469 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:42371 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47259 TIME_WAIT
tcp 0 0 192.168.0.1:3306 192.168.0.2:47252 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46480 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47275 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47293 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47291 TIME_WAIT
tcp 0 0 192.168.0.1:3306 192.168.0.2:47311 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47304 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47303 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:46530 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:49089 ESTABLISHED
tcp 0 100740 192.168.0.1:3306 192.168.0.2:47318 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47315 ESTABLISHED
tcp 0 0 192.168.0.1:3306 192.168.0.2:47312 ESTABLISHED
[root@mysql ~]#

Do you see the high different number between connections !!

I am sorry for bad english but i am really get more pain daily with the high load
My server kernel

Linux httpd 2.6.18-8.1.8.el5 #1 SMP Tue Jul 10 06:50:22 EDT 2007 i686 i686 i386 GNU/Linux

I use CentOS 5 and httpd 1.3 and php 4.4.7

I try to upgrade them to httpd 2.0 and php 5.2.4 but most users can't browse the site so
i come back to 1.3

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High I/O Load

Sep 11, 2007

I have upgraded the kernel, I have optimized the my.cnf (mysql), the swap file is free.

The memory is not overloaded even then the I/O wait is too high, the top result is as below

The server become very very slow due to high I/O load, I am failed to dins out the reason. Please help me with the commands so I can sort it out

top - 06:09:17 up 13 min, 2 users, load average: 7.51, 8.26, 5.35
Tasks: 179 total, 1 running, 178 sleeping, 0 stopped, 0 zombie
Cpu(s): 2.7% us, 2.0% sy, 0.0% ni, 0.0% id, 95.0% wa, 0.3% hi, 0.0% si
Mem: 1027536k total, 1014232k used, 13304k free, 114232k buffers
Swap: 2040244k total, 0k used, 2040244k free, 242300k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3474 apache 16 0 92232 54m 5780 D 0.7 5.4 0:04.01 httpd
2914 named 18 0 39448 4404 1964 S 0.3 0.4 0:01.44 named
3067 mysql 15 0 283m 42m 4288 S 0.3 4.3 0:03.87 mysqld
3826 popuser 15 0 34572 29m 2348 D 0.3 2.9 0:10.69 spamd
3876 apache 15 0 93716 55m 5512 S 0.3 5.5 0:03.41 httpd
7049 root 17 0 10508 2572 1996 S 0.3 0.3 0:00.05 sshd
7161 root 26 10 12712 5804 2656 S 0.3 0.6 0:00.37 mytop
7651 root 16 0 2784 1020 760 R 0.3 0.1 0:00.03 top
7688 popuser 16 0 6068 932 740 D 0.3 0.1 0:00.01 imapd
1 root 16 0 2588 552 472 S 0.0 0.1 0:00.72 init
2 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
3 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 events/0
4 root 9 -10 0 0 0 S 0.0 0.0 0:00.00 khelper
5 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
19 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 kblockd/0
20 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd
37 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
38 root 15 0 0 0 0 S 0.0 0.0 0:00.03 pdflush
39 root 15 0 0 0 0 S 0.0 0.0 0:00.01 kswapd0
40 root 11 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
186 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod
415 root 15 0 0 0 0 D 0.0 0.0 0:00.32 kjournald
1606 root 7 -10 0 0 0 S 0.0 0.0 0:00.00 ata/0
1607 root 7 -10 0 0 0 S 0.0 0.0 0:00.00 ata_aux
1617 root 6 -10 2044 448 380 S 0.0 0.0 0:00.01 udevd
1850 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kauditd
1915 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald
1916 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald
2698 root 15 0 3540 548 456 S 0.0 0.1 0:00.26 syslogd
2702 root 16 0 1564 384 316 S 0.0 0.0 0:00.00 klogd
2729 rpc 15 0 3560 548 452 S 0.0 0.1 0:00.00 portmap
2748 rpcuser 18 0 2348 724 620 S 0.0 0.1 0:00.00 rpc.statd
2774 root 16 0 5944 344 172 S 0.0 0.0 0:00.00 rpc.idmapd
2845 root 19 0 2568 472 264 S 0.0 0.0 0:00.00 smartd
2854 root 18 0 2928 444 368 S 0.0 0.0 0:00.00 acpid
2863 root 16 0 9548 2008 1456 S 0.0 0.2 0:00.02 cupsd
2957 root 16 0 5440 1132 832 S 0.0 0.1 0:00.04 sshd

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My Vps Is High Load

May 11, 2007

eveyday i see my vps high load

1st problem <<<<

now i show this error for load in CPU/Memory/MySQL Usage

--------------------------------------------
/usr/sbin/mysqld --basedir/ --datadir/var/lib/mysql --usermysql --pid-file/var/lib/mysql/server.nogomhost.net.pid --skip-external-locking
---------------------------------------------
this " mysql " used 90% and 80 % from CPU

And all account used sql 0.0 , why load mysql ?

2nd problem <<<<

some times my vps is down , i don't why

3rd prblem <<<

my vps is not working to some clients , i make allow after user's sent to me ip's by apf program

i'm Disable Backup " Restore only "

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Very High Load

Mar 22, 2007

top - 00:21:30 up 4 min, 1 user, load average: 20.30, 6.74, 2.42
Tasks: 221 total, 12 running, 209 sleeping, 0 stopped, 0 zombie
Cpu(s): 33.7% us, 4.4% sy, 0.0% ni, 0.0% id, 61.8% wa, 0.1% hi, 0.0% si
Mem: 1025804k total, 639076k used, 386728k free, 1296k buffers
Swap: 2031608k total, 22584k used, 2009024k free, 23804k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3359 apache 16 0 30968 16m 5752 S 11.9 1.7 0:00.61 httpd
3065 apache 16 0 31092 16m 5776 S 5.0 1.7 0:01.38 httpd
2478 apache 16 0 29068 14m 5680 S 4.0 1.5 0:00.80 httpd
2822 apache 16 0 28420 14m 5756 D 4.0 1.4 0:00.59 httpd
2810 apache 16 0 31412 17m 5764 R 3.0 1.7 0:01.72 httpd
3111 apache 15 0 29312 14m 5756 D 3.0 1.5 0:00.76 httpd
3787 apache 16 0 29164 14m 5668 S 3.0 1.4 0:00.09 httpd
2816 apache 16 0 31556 17m 5776 S 2.6 1.7 0:01.20 httpd
3063 apache 16 0 29740 15m 5760 S 2.3 1.5 0:01.65 httpd
3226 apache 15 0 31132 16m 5772 D 2.3 1.7 0:01.62 httpd
3007 apache 16 0 29160 14m 5744 S 2.0 1.5 0:00.59 httpd
3058 apache 16 0 31612 17m 5764 S 2.0 1.7 0:00.92 httpd
3064 apache 15 0 30300 15m 5764 S 2.0 1.6 0:01.59 httpd
3481 apache 16 0 29032 14m 5752 S 2.0 1.5 0:00.15 httpd
3503 apache 16 0 29076 14m 5756 S 2.0 1.5 0:00.48 httpd
2589 apache 15 0 28980 14m 5760 S 1.7 1.4 0:00.94 httpd
3069 apache 15 0 30900 16m 5760 S 1.7 1.7 0:01.92 httpd

httpd.conf

Quote:

ServerType standalone
ServerRoot "/etc/httpd"
LockFile /var/run/httpd.lock
PidFile /var/run/httpd.pid
ScoreBoardFile logs/apache_runtime_status
ResourceConfig /dev/null
AccessConfig /dev/null

Timeout 30
KeepAlive Of
MaxKeepAliveRequests 100
KeepAliveTimeout 5
MinSpareServers 8
MaxSpareServers 18
StartServers 10
MaxClients 100
MaxRequestsPerChild 500

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Rsync - High Load

Jul 25, 2007

I am using rsync to transfer files (tar.gz) between servers. However, it makes server load increasing 3-4. Normally, server load can be around 1, but when doing the transfer, it can go up to 5+

Is there anyway to reduce the load when doing rsync?

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High Load Average While Using SCP

Oct 22, 2009

I have to move about 50 GB each night from one server to another.

This is the command I'm using:

Code:

/bin/nice -n +19 scp -c blowfish -l 18000 -P 22222 root@XX.XX.XX.XX:/backup/dailybacks/*.tar.gz ./
There is no private lan so i have to use internet. I'm using blowfish, which will reduce cpu load, and also limiting bandwidth transfer, usign -l 18000. How ever, I still do see some high load averages..

Do you have any other suggestion to optimize CPU performance while running scp?

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