I am looking for some kind of benchmark script to compare MySQL before and after optimization (Changing certain parameters). It should give some indication of response times. Maybe also an indication of the slowest commands.
Would be great if it can give some score with some reference.
Also, since this is not a test environment (I have my sites hosted on this VPS), I would prefer if it's easy to use and doesn't mess with anything else.
I am trying to benchmark my server until it gives me a ISE.
I have tried:
ab -n 1000 -c 20 [url]
and it didn't do anything.
I have several VPS's that I run. Some run LAMP, others RoR, and my latest runs with Nginx + Cherrypy (python).
To be honest, I've never run any benchmarks to see how well the servers performed under stress. But I'd like to start.
Are there are good (free) programs out there that will stress test my web servers? I develop on windows, but deploy on linux, so either platform is ok. I'm most interested in how many concurrent connections can be maintained.
VPS vs. Dedicated - New Benchmark Results ....
View 1 Replies View Relatedway to perform benchmark tests on a web server. I want to be able to benchmark the web server and MySQL.
how to benchmark and configure FCGI.
View 4 Replies View RelatedHas anyone done a benchmark of test files for multiple unmeetered hosts during peak hours?
I have a 100mbit server at ThePlanet i could use for benchmarking. I could write a simple benchmark program to record the time+speed of a list of shared bw test files.
I'll have it sample each host for 10sec every hour. With that we can make a speed/time graph for each host.
My server is in TX on a shared line but not unlimited BW.
It would be nice if we can get some benchmarks from other data centers.
Would this reflect actual speeds?
I'm interested in creating a small website exposing the biggest overselling companies, and how their overselling practices are false marketing.
Simply put, I want to benchmark each host with exact tests for accuracy. Any idea how I can fairly test each host, e.g. benchmark?
After the tests have been performed, I will explain which are the worst hosts (e.g. the first to give me the boot due to some TOS clause, e.g. cpu usage), etc.
Also, would anyone like to help out with this project? I'll be putting some nice marketing into it.
Since my /var partition is full, so I moved /var/lib/mysql to /backup/mysql/.
Seems all the files are copied and I changed my.cnf reboot mysql, but all the web sites using db is not working anymore..
I installed the MySQL binary packages in /usr/local/mysql/ after removing the MySQL RPM package. MySQL is functioning when I executed /usr/local/mysql/bin/safe_mysqld. I reinstalled MySQL before I installed PHP. When I used a PHP script to access a MySQL database, it outputs an error:
Code:
Warning: mysqli::mysqli() [function.mysqli-mysqli]: (HY000/2002): can't connect to local mysql server through socket /var/lib/mysql/mysql.sock in index.php on line 2
However, I installed MySQL in /usr/local/mysql, not in /var/lib/mysql. How do I fix MySQL?
For some reason mysql wont start, i have tried restarting mysql but it wont, it says FAILED. The mysql.sock file seems to have disappeared and i cannot find it anywhere.
View 5 Replies View RelatedI recently had a harddrive failure and luckliy I can still access certain directories on this failed drive. I can still access the /var/lib/mysql/ directory which holds all the users databases and have backed all these up separately using tar.
Now what I need to know is how do you restore these database files to another server? I tried simply untar'ing one of these to the new servers /var/lib/mysql/ direcotry and it stuffed Mysql up - it went offline. I had to get a cpanel tech to bring Mysql back online.
how can I get these database files to fully work on a new server?
Can someone recommended me some one with knowledge of mysql exploit or mysql injection, it seem to our VB forum have issue with database load..
View 5 Replies View RelatedI've been racking my brains with this problem for the last couple of months and have made zero progress. I've asked a lot of people if they know what might be wrong here, but none of them have any idea.
Basically, the problem is that any sort of service monitor I put on my server shows MySQL as being down/offline, even when I know for sure it's up and running perfectly fine. All other services report a green light.
The mysqld service is running on port 3306, which is open both inbound and outbound on my APF config, so as far as I can tell it's nothing to do with the firewall (I won't rule that out though).
The other odd thing is that MySQL shows a green light within WHM, but not anywhere else.
Does anyone know what might be wrong here? Am I missing something entirely fundamental and obvious?
my /var partition is full,
im not sure if any files i can remove to get more free space on /var partition.
because there are more free space on /home,
i think if i can move all the /var/lib/mysql to /home/mysql,
if yes,howcan i move it and do any change,
can let the sql data do not lose,
andrun well in the feature ?
I've rented a dedicated server that comes with Red Hat Enterprise Linux 4 and MySQL 3.23 but I need at least MySQL 4.1 or higher. My knowledge about GNU/Linux is very limited, so I've read some documents at mysql.com and now I think I have to follow these steps:
1. Uninstall MySQL 3.23 with this command line:
shell> rpm -e mysql-*.rpm
2. Install the server and client RPMs of MySQL 5.0:
shell> rpm -i MySQL-server-VERSION.i386.rpm
shell> rpm -i MySQL-client-VERSION.i386.rpm
I have a number of web sites on a dedicated server. Some of these web sites are a few years old. Are there any issues upgrading from MySQL 4.1 to 5.x? Are there web sites that may have compatibility issues?
View 6 Replies View RelatedI keep getting this error :
MySQL Error : MySQL server has gone away
How do I fix it?
my.cnf contents
Quote:
[mysqld]
safe-show-database
old_passwords
back_log = 75
skip-innodb
max_connections = 800
key_buffer = 48M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
table_cache = 3000
thread_cache_size = 128
wait_timeout = 90
connect_timeout = 30
tmp_table_size = 128M
max_heap_table_size = 64M
max_allowed_packet = 256M
net_buffer_length = 16384
max_connect_errors = 10
thread_concurrency = 4
read_rnd_buffer_size = 786432
bulk_insert_buffer_size = 8M
query_cache_limit = 3M
query_cache_size = 48M
query_cache_type = 1
query_prealloc_size = 262144
query_alloc_block_size = 65536
transaction_alloc_block_size = 8192
transaction_prealloc_size = 4096
default-storage-engine = MyISAM
max_user_connections = 500
[mysqld_safe]
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
[mysqlhotcopy]
interactive-timeout
I have recently upgraded mysql server from 5.0.75 to 5.1.31 on my Ubuntu server 9.04 32 bit. After that when I am running phpmyadmin it is printing a warning :
Your PHP MySQL library version 5.0.75 differs from your MySQL server version 5.1.31.
I'm trying to upgrade from MySQL 4 to MySQL 5 for performance reasons. MySQL 4 was working great so I decided to just go ahead and upgrade to MySQL 5 via CPanel. The upgrade appeared to go fine however I now get this error when trying to start MySQL.
/usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)' Check that mysqld is running and that the socket: '/var/lib/mysql/mysql.sock' exists! mysql has failed, please contact the sysadmin (result was "Warning, no valid mysql.sock file found.mysql has failed").
I went ahead and did a forced re-install of MySQL 5, but that didn't help. Apache has been updated as well since then, but that did no good, and the MySQL process isn't starting at all.
Its CENTOS with PHP5.
I am not sure what difference between --with-mysql and --with-mysql=/usr to compile php 4.4.7
because I get error message when I use --with-mysql=/usr
the error message is like Mysql header can not be found or similar thing.
it ok when I use --with-mysql
so, I am afraid that can I use php and mysql without problem by using --with-mysql?
I'd like to upgrade my current mysql 4.1 version to mysl 5, but i can't find a good tutorial or explenation! I've been searching for hours now without any good results.
I've downloaded the lastest stable mysql 5 .rpm, and tried to install it with rpm -i mysql.version.rpm, but it says the following:
# rpm -i MySQL-server-standard-5.0.27-0.rhel4.i386.rpm
warning: MySQL-server-standard-5.0.27-0.rhel4.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5
error: Failed dependencies:
MySQL conflicts with mysql-4.1.20-1.RHEL4.1.i386
MySQL-server conflicts with mysql-server-4.1.20-1.RHEL4.1.i386
I guess that means i have to uninstall mysql 4.1 first.
ok...
# rpm -e mysql-server-4.1.20-1.RHEL4.1.i386
warning: /var/log/mysqld.log saved as /var/log/mysqld.log.rpmsave
Let's try to install it now.
# rpm -i MySQL-server-standard-5.0.27-0.rhel4.i386.rpm
warning: MySQL-server-standard-5.0.27-0.rhel4.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5
error: Failed dependencies:
MySQL conflicts with mysql-4.1.20-1.RHEL4.1.i386
Ok, let's remove that.
# rpm -e mysql-4.1.20-1.RHEL4.1.i386
error: Failed dependencies:
libmysqlclient.so.14 is needed by (installed) perl-DBD-MySQL-2.9004-3.1.i386
libmysqlclient.so.14 is needed by (installed) dovecot-0.99.11-4.EL4.i386
libmysqlclient.so.14 is needed by (installed) php-mysql-4.3.9-3.22.i386
libmysqlclient.so.14(libmysqlclient_14) is needed by (installed) dovecot-0.99.11-4.EL4.i386
libmysqlclient.so.14(libmysqlclient_14) is needed by (installed) php-mysql-4.3.9-3.22.i386
mysql = 4.1.20-1.RHEL4.1 is needed by (installed) mysql-devel-4.1.20-1.RHEL4.1.i386
Does upgrade work?
# rpm -Uvh MySQL-server-standard-5.0.27-0.rhel4.i386.rpm warning: MySQL-server-standard-5.0.27-0.rhel4.i386.rpm: V3 DSA signature: NOKEY, key ID 5072e1f5
error: Failed dependencies:
libmysqlclient.so.14 is needed by (installed) perl-DBD-MySQL-2.9004-3.1.i386
libmysqlclient.so.14 is needed by (installed) dovecot-0.99.11-4.EL4.i386
libmysqlclient.so.14 is needed by (installed) php-mysql-4.3.9-3.22.i386
libmysqlclient.so.14(libmysqlclient_14) is needed by (installed) dovecot-0.99.11-4.EL4.i386
libmysqlclient.so.14(libmysqlclient_14) is needed by (installed) php-mysql-4.3.9-3.22.i386
Clearly not.
How do i upgrade mysql?
I have a big issue importing 4.0 databases with mysql 5.0.27.
I did a mysqldump -pxxxxx --force --all-databases > file.sql on server with mysql 4.0
But when I tried to import the file on server with mysql 5.0, this is what I got:
ERROR 1064 (42000) at line 2: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
I even tried to force import and I got:
ERROR 1046 (3D000) at line x: No database selected for every database.
I checked sql file and CREATE DATABASE xx and USE xx were both added.
I tried this with a single database and worked but with all not
loading a phpinfo() shows that the mysql variable "Client API version" on my server doesn't match the version of mysql installed ( 4.0.20 when mysql version is 4.1.21).
Can this cause trouble and php or mysql errors on scripts i'm running?
What are the files in this directory - /var/lib/mysql/
Files like
#sql_2a6c_0.MYD
#sql_2a6c_2.MYD
etc
etc
I have a stack of them all 200MB plus in size
I need to cleanup /var as its 99% full, what else can I clean up?
MySQL 5.1 GA
Has anyone tried to migrate already?
Mysql usage is very high now and most time server load is high.
Where is issue and how can resolve this?
I'm trying to understand, generally, on a Hybrid VPS with 1gig guaranteed/4gig burst- for small sites that might be installing stuff like Wordpress, a Forum, Joomla!, etc., how many MySQL databases this system can support.
I realize traffic would be a major factor but for discussion sake lets assume an average of 50 users for each db with a peak of 100 users.
Just trying to get a 'rule of thumb'. Wondering also, how much RAM (resources?) an idle db consumes.
i've been using 4.1 without problems but now i'm switching servers and i am wondering whether its a good idea to go for ver 5. How do they compare in terms of performance/security etc? Whats recommended for web use?
View 7 Replies View RelatedMy Server using more MYSQL and CPU
i checked every thing
1 ) i went to : Show MySQL Processes
i want to know what is NULL
root localhost NULL Query 0 NULL SHOW PROCESSLIST
2 ) i went to CPU/Memory/MySQL Usage
Top Process %CPU 122 gzip
Top Process %CPU 110 gzip
Top Process %CPU 89.0 gzip
Would enabling PDO and PDO Mysql modules in apache compile (via whm) be a bad idea? Any possible conflicts or warnings?
It says
(UNSUPPORTED EXPERIMENTAL) Includes SQLite support. Other drivers (freetds, oracle, etc) can be installed with PECL. If you use rawopts to add them during compile then you will have to have them '=shared' and *NOT* do the PHP "versioning" option. Custom opt mods for PDO extensions should also do the "versioning" logic this one does.
I'm already using mysql 5 with mysqli