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From:Tsubasa Tanaka Date:May 23 2012 2:35am
Subject:Re: Need help for performance tuning with Mysql
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Hello,

I seem your mysqld doesn't use enough memory.

>>Date       Time      CPU%  RSS     VSZ
>>2012/5/22  21:00:39  109   294752  540028

if your mysqld uses InnoDB oftenly,
edit innodb_buffer_pool_size in you my.cnf.

http://dev.mysql.com/doc/refman/5.1/en/innodb-parameters.html#sysvar_innodb_buffer_pool_size


>>table_cache
>>thread_cache_size
>>tmp_table_size
>>max_heap_table_size
>>
>>but made not much difference.

It is solution for only sql's large result,i think.
if you doesn't recognize that problem causes large result,
you should approach other way,too.

regards,


ts. tanaka//

2012/5/23 Yu Watanabe <yu.watanabe@stripped>:
> Also following is the free command result.
>
>             total       used       free     shared    buffers     cached
> Mem:       8162380    7843676     318704          0      95632    5970892
> -/+ buffers/cache:    1777152    6385228
> Swap:      8032492      23560    8008932
>
> Thanks,
> Yu
>
>
> Yu Watanabe さんは書きました:
>>Hello all.
>>
>>I would like to ask for advice with performance tuning with MySQL.
>>
>>Following are some data for my server.
>>
>>CPU    : Xeon(TM) 2.8GHz (2CPUs - 8core total)
>>Memory : 8GB
>>OS     : RHEL 4.4 x86_64
>>MySQL  : MySQL 5.0.50sp1-enterprise
>>
>>Attached file
>># my.cnf.txt                  : my.cnf information
>># mysqlext_20120522131034.log : variable and status information from mysqladmin
>>
>>I have 2 database working with high load.
>>
>>I wanted to speed up my select and update queries not by
>>optimizing the query itself but tuning the my.cnf.
>>
>>I have referred to following site,
>>http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html
>>
>>and read "Hiperformance Mysql vol.2" ,
>>and increased the following values,
>>
>>table_cache
>>thread_cache_size
>>tmp_table_size
>>max_heap_table_size
>>
>>but made not much difference.
>>
>>According to the ps and sar result
>>
>>*1 PS result
>>Date       Time      CPU%  RSS     VSZ
>>2012/5/22  21:00:39  109   294752  540028
>>
>>*2 SAR
>>Average CPU user 25%
>>            sys  5%
>>            io   3%
>>
>>I assume that MySQL can work more but currently not.
>>
>>I am considersing to off load 1 high load database to
>>seperate process and make MySQL work in multiple process.
>>
>>It would be a great help if people in this forum can give
>>us an adivice for the tuning.
>>
>>Best Regards,
>>Yu Watanabe
>>
>>______________________________________________________________________
>>
>>
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Thread
Need help for performance tuning with Mysql Yu Watanabe23 May
  • Re: Need help for performance tuning with MysqlYu Watanabe23 May
    • Re: Need help for performance tuning with MysqlTsubasa Tanaka23 May
      • Re: Need help for performance tuning with MysqlYu Watanabe23 May
        • Re: Need help for performance tuning with MysqlTsubasa Tanaka23 May
          • Re: Need help for performance tuning with MysqlAndrew Moore23 May
            • Re: Need help for performance tuning with MysqlAnanda Kumar23 May
  • Re: Need help for performance tuning with MysqlJohnny Withers23 May
    • Re: Need help for performance tuning with MysqlYu Watanabe24 May
  • RE: Need help for performance tuning with Mysql Rick James23 May
    • Re: Need help for performance tuning with MysqlYu Watanabe24 May
      • Re: Need help for performance tuning with MysqlAlex Schaft24 May
        • Re: Need help for performance tuning with MysqlAlex Schaft24 May
          • Re: Need help for performance tuning with MysqlYu Watanabe24 May
      • RE: Need help for performance tuning with MysqlRick James24 May
        • Re: Need help for performance tuning with MysqlPrabhat Kumar30 May