how to set MAX_CONNECTIONS_PER_HOUR for one of my CPANEL USER (like:
cpaneluser_somesubuser) for all his databases?
I tried:
Quote:
mysql> GRANT USAGE ON *.* TO 'cpaneluser_somesubuser'@'localhost' WITH MAX_CONNECTIONS_PER_HOUR 10;
I have been playing around with different virtualization platforms:
- OpenVZ (newer kernels do not support hard-cpu limits for whatever reason)
- Xen Server
- Windows Hyper-V
- Linux KVM
However, none of them seem to be able to stablish HARD limits on resources for a virtual machine. Or am I missing something?
HyperVM supposedly has hard-limits because they use OpenVZ older kernels, right? -- I have not tried Parallels Containers do they have hard-limits enforced?
After running for a while mysql suddenly starts using 100% CPU and my site goes down due to apache waiting with 150 sleeping processes.
Here is the top stats
PHP Code:
top - 00:20:47 up 12:01, 2 users, load average: 1.11, 1.04, 0.95
Tasks: 200 total, 2 running, 198 sleeping, 0 stopped, 0 zombie
Cpu(s):100.0%us, 0.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1004152k total, 618132k used, 386020k free, 118436k buffers
Swap: 2000084k total, 0k used, 2000084k free, 282372k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2011 mysql 18 0 177m 43m 5684 S 99.9 4.5 86:51.60 mysqld
14877 root 15 0 2360 1216 860 R 0.3 0.1 0:00.11 top
1 root 15 0 1948 648 556 S 0.0 0.1 0:00.97 init
ps ax | grep apache -c
152
On restarting mysql everything goes back to normal.
Can someone tell me how I could go about rectifying this?
I'm sure the server can take the load, coz before this the site was on a way slower machine and worked flawlessly.
is there any way to find out which users are most intensively using mysql? i've installed mytop which gives me some info, but the only user it shows connected is me (i.e. localhost) with no break down of what tables are being used etc.
also in whm i can see mysql has consuming quite a bit of memory/cpu, but it doesn't show me individual users; just the service as a whole.
I am using lighttpd php and mysql.
How to lower the cpu usage?
What's the best way to monitor mysql usage?
Quote:
top - 10:39:48 up 10 days, 35 min, 1 user, load average: 8.22, 9.38, 8.50
Tasks: 132 total, 5 running, 127 sleeping, 0 stopped, 0 zombie
Cpu(s): 73.5%us, 22.3%sy, 0.0%ni, 2.1%id, 0.0%wa, 0.1%hi, 2.0%si, 0.0%st
Mem: 2075000k total, 1919256k used, 155744k free, 113660k buffers
Swap: 2031608k total, 56k used, 2031552k free, 1177200k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
21899 mysql 20 0 200m 53m 4752 S 182 2.6 8100:18 mysqld
2548 lighttpd 20 0 20288 16m 680 S 19 0.8 878:33.76 lighttpd
9759 lighttpd 20 0 23168 7880 3048 S 10 0.4 8:50.96 php-cgi
30959 lighttpd 20 0 23164 7896 3096 S 10 0.4 11:40.95 php-cgi
9732 lighttpd 20 0 23204 7544 2664 S 8 0.4 8:59.42 php-cgi
10671 lighttpd 20 0 23248 7612 2664 S 8 0.4 4:51.95 php-cgi
9769 lighttpd 20 0 23312 8012 3048 S 7 0.4 8:55.61 php-cgi
9771 lighttpd 20 0 23104 7312 2584 S 7 0.4 8:50.33 php-cgi
10601 lighttpd 20 0 23336 8032 2996 S 7 0.4 4:56.21 php-cgi
31091 lighttpd 20 0 23064 7860 3100 S 7 0.4 11:30.69 php-cgi
9782 lighttpd 20 0 23116 7880 3060 S 7 0.4 8:57.46 php-cgi
8559 lighttpd 20 0 23396 7780 2668 R 6 0.4 6:43.16 php-cgi
Does anyone know if MySQL 5.1 or 5.0 uses less memory than 4.1 does?
View 3 Replies View RelatedI'm having a problem with high MySQL CPU usage on my server, one of my sites is getting hit pretty hard right now and MySQL is just killing the box. Its averaging a load of over 20, CPU usage is around 130%.
here is my my.cnf file. is there anything in their that should be changed to help lower the CPU usage?
# The MySQL server
[mysqld]
port= 3306
socket= /var/lib/mysql/mysql.sock
skip-locking
key_buffer = 256M
max_allowed_packet = 1M
table_cache = 512
max_connections=500
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 2
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[myisamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
Server Specs.
Pentium E 2.0Ghz
2GB ram
2x 320GB hard drives.
Cent OS 5
Cpanel
My mysql is using alot of memory although there is not much data into the mysql tables.
I tried to control mysql usage by editing my.cnf file but that didnt help.
Which variables should I edit in my.cnf to keep mysql using low memory?
I edited sort_buffer_size, key_buffer_size but that didnt help much. It uses alot of per-thread memory as well.
I need some help my CPU (Intel Core 2 Duo 1.7 Ghz) always gets high usage from mysql sometimes its using 95% cpu etc... How can I modify my.cnf to use less CPU and more ram since I have 3gb ram installed?
here is my.cnf
Code:
[mysqld]
back_log = 5
skip-innodb
max_connections = 400
key_buffer = 190M
myisam_sort_buffer_size = 156M
join_buffer_size = 4M
read_buffer_size = 4M
sort_buffer_size = 5M
table_cache = 1024
record_buffer = 1024
thread_concurrency = 2
long_query_time = 1
thread_cache = 1024
thread_cache_size = 992025
wait_timeout = 13
connect_timeout = 5
tmp_table_size = 64M
max_heap_table_size = 16M
max_allowed_packet = 16M
max_connect_errors = 500
read_rnd_buffer_size = 1024
bulk_insert_buffer_size = 32M
query_cache_limit = 1M
query_cache_size = 64M
query_cache_type = 1
query_prealloc_size = 163840
query_alloc_block_size = 32768
low_priority_updates=1
default-storage-engine = MyISAM
[mysqld_safe]
nice = -2
open_files_limit = 4096
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer = 64M
sort_buffer = 64M
read_buffer = 32M
write_buffer = 32M
I'm always having MySQL consuming quite a bit of cpu & ram.
what's happening here?
PHP Code:
mysql 27519 7.2 12.8 158736 132496 ? Sl Mar08 180:57 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server.hostname.pid --skip-external
I have replaced my server's real hostname to server.hostname
is there is any way or command to know every account on the server how much it using for mysql space?
i know i can know it from cpanel page but it's for one account is there a way to make a list for the usage?
and also i want if there is any wait to limit the database size?
cuz i want make a limitation for my clients every account cannot put any databases more thatn 100MB size?
I am very low of system resources but wish to use MYSQL as my database backend so I have installed MYSQL 4.0 on my Debian Sarge 3.1 VPS with linuxthreads and configured it to use least possible resources as my VPS only offers 32MB main memory. Generally I use the PS command to get the memory usage of running processes. But MYSQL being threaded confuses me. My system uses linuxthreads so all the threads get listed as seperate processes but show same stats in PS command output. On initialization, MYSQL starts 3 threads which according to documentation, are necessary for its functioning. This is what I see:
root 139 0.0 0.0 2436 4 ? S Feb07 mysqld_safe
mysql 163 0.0 4.5 5480 1264 ? S Feb07 0:02 mysqld
mysql 164 0.0 4.5 5480 1264 ? S Feb07 0:00 mysqld
mysql 165 0.0 4.5 5480 1264 ? S Feb07 0:00 mysqld
Is that means MYSQL is using only 1264 Kb of real memory? If that is the case, I am really happy about my tweaking skills. After doing a query through PHP, the output becomes:
root 139 0.0 0.0 2436 4 ? S Feb07 mysqld_safe
mysql 163 0.0 4.5 5510 1278 ? S Feb07 0:02 mysqld
mysql 164 0.0 4.5 5510 1278 ? S Feb07 0:00 mysqld
mysql 165 0.0 4.5 5510 1278 ? S Feb07 0:00 mysqld
Thats just very nominal resource usage. I am assuming that what PS is showing are just duplicate entries for a single MYSQLD process and 1278 Kb can be safely taken as its RAM usage. I hope it is not (1278 X No. of mysqld threads).
I had a 280 MB MySQL db on a 384 MB Linux Dual Xeon 3.2 GHz VPS (no CP, no additional software) and it was no where near enough. Even if I upgraded the VPS to say 1 GB of Memory, it would take no time at all to over load it at this rate. There must be something wrong with the setup, I can't see MySQL being so resource heavy... or is it?
View 7 Replies View RelatedI'm checking my CPU/Memory/MySQL Usage and I'm seeing that something called Munin is running at 54%. That is apparently the average for today. Can anyone give me any insight as to what this is?
Wikipedia classifies Munin as a network monitoring application. I don't think it should be using this much processing.
It appears that I may have enabled this plugin when I rebuilt my apache using EasyApache. Are there any big benefits to this? Looking at the graphics at first glance it doesn't look like there is. but then again, I'm not that knowledgable about this stuff.
I'm no SQL expert so I'm not exactly sure what to look for in-depth here. However, I noticed that MySQL would periodically raise to 98% cpu usage in top. So, I checked it out and turns out every time you load the front page of a site I host it takes about 30 seconds to load and its during that time that MySQL is freaking out.
I know the user relies heavily on MySQL, however I want to try to narrow down the problem as much as possible for them. Any recommendations on what else to look for?
just noticed mysql cpu usage has shot up from its usual 5-10% cpu to 30%+. domains are as normal and no extraordinary php processes.
any way i can tell what users are most heavily running mysql? (as in number queries / slow queries etc?) i know mysqladmin processlist but that only gives me a snapshot, whereas i want to see over 24 hours, who used mysql the most...
What is the average memory/cput usage for httpd connections.?One of the site is using 2.8% memory. Is it acceptable for 1 GB RAM servers?
View 6 Replies View Relatedon my server i have 104 accounts and the MySQL Usage for th cpus is 25.23
like this pic [url] is that danger? and how can i resolve it?
Not displaying CPU/Memory/MySQL Usage stats.Can u tell me how can i do it.
View 2 Replies View Relatedmy server is jammed and takes minutes to load simple pages, can you please take a look ath the following image, its show under "CPU %" for mysql 177, does that mean mysql is using 177% of resources of cpu?
View 3 Replies View RelatedIt is possible to show resources usage stat. to customers?
Any addons & scripts?
This is very important function, but cpanel didn't have it.
I created same thread to forums.cpanel.net but no replies.
One of my friends uses a popular shared hosting provider, and I was assisting him with a web site issue earlier.
I noticed the following warning in the host's control panel:
"[MySQL databases] may not be used for log evaluation operations, ad clicks, chat systems, banner rotations, or similar applications putting extreme loads on the database under any circumstances."
Is this common at other shared hosts?
I have 2 identical Fedora8 boxes with Apache 2.2.8, MySQL 5.0.45 and PhP 5.2.4. I use one as the Web+DB server (say box A), and the other (box B) just as the Web server connecting to the DB server on box A. I use this 2 machine configuration to test a LAMP based-Web application. I have a client program on other machines that can emulate a massive web workload to these 2 servers; it can emulate hundreds to thousands of users using the application simultaneously.
Before running the test, the connection to the DB server from both boxes seem fine. Using the mysql client program on either box A or B trying to connect to the DB, the connection goes through instantly. In the /etc/my.cnf file, I have max_connections=4096 and max_user_connections=4096. Note that the web app uses one single db user to connect to the db. To allow remote connection, I inserted one record into the user table of the mysql db whose the host field's value is '%' (allow connection from all remote hosts).
After running the test (which I found out that many requests sent to box B failed), mysql client program on box A is still able to connect to the db instantly; but the one on box B has a problem: it takes extremely long (5 - 10 minutes or even more) to establish the connection, it doesn't time out, just takes that long. I believe that's the cause for the failure of requests to box B.
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.
This is for those who are currently supporting VPS boxes, umm... what would you say the general CPU and Process limits should be per VPS per user?
View 7 Replies View RelatedI am running apf as firewall. How do I limit IPs for ssh ? I want to let only specific IP addresses.
View 10 Replies View RelatedCurrently on my WHM/cPanel servers, I have a hard limit encoded for the amount of mail a client can send per hour. (whm, tweak settings). Is there a way to over ride this for one domain/client, or is it global?
View 4 Replies View RelatedBluehost apparently offers unlimited bandwidth and disk space (so they say). This seems suspicious. Are there any limitations I should be aware of?
View 14 Replies View RelatedHow can I limit the amount of processes a user can have open at one time?
View 1 Replies View RelatedIm currently hosted at hostgator and so far they are great.
I have a medium size vbulletin forum. 7500 threads, 111,500 post, 12,000 users and about 2,000 active users... most of the time I have 30 to 50 members online and 150 guests (200 users at the time).
Hostgator has never fail to me. but I was wondering what would be the limit of my shared account? how many users at the same time can take my account?
I dont use a lot of BW (80gb per month) and 1gb disk space.. I plan to expand more but I dont know if I gonna need a vps or something...
I want to add visitors limits for my website. Is any way to i do that ? For example i want only 50 visitors to be the same time on my website and if come more to they get a message the website is full, please come back another time.
Is any script or other way to do that?