High Server Load on Centos 6.7 /w Litespeed

[cool_recep]

Hi,

my server load is too high for some time. About 2 weeks.

[email protected] [~]# perl mysqltuner.pl
>>  MySQLTuner 1.5.1 - Major Hayden <[email protected]>
>>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
>>  Run with '--help' for additional options and output filtering
[OK] Currently running supported MySQL version 5.6.23
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +ARCHIVE +BLACKHOLE +CSV -FEDERATED +InnoDB +MRG_MYISAM
[--] Data in MyISAM tables: 2G (Tables: 399)
[--] Data in InnoDB tables: 2G (Tables: 233)
[--] Data in MEMORY tables: 14M (Tables: 5)
[!!] Total fragmented tables: 74

-------- Security Recommendations  -------------------------------------------
[OK] There is no anonymous account in all database users
[OK] All database users have passwords assigned
[--] There is 605 basic passwords in the list.

-------- Performance Metrics -------------------------------------------------
[--] Up for: 2d 17h 23m 46s (82M q [350.842 qps], 3M conn, TX: 4274B, RX: 619B)
[--] Reads / Writes: 66% / 34%
[--] Binary logging is disabled
[--] Total buffers: 16.1G global + 7.2M per thread (500 max threads)
[OK] Maximum reached memory usage: 16.9G (53.97% of installed RAM)
[OK] Maximum possible memory usage: 19.7G (62.85% of installed RAM)
[OK] Slow queries: 0% (2/82M)
[OK] Highest usage of available connections: 21% (108/500)
[OK] Aborted connections: 0.00%  (83/3357870)
[OK] Query cache efficiency: 70.8% (42M cached / 60M selects)
[!!] Query cache prunes per day: 10298
[OK] Sorts requiring temporary tables: 0% (4K temp sorts / 5M sorts)
[OK] Temporary tables created on disk: 20% (439K on disk / 2M total)
[OK] Thread cache hit rate: 99% (108 created / 3M connections)
[OK] Table cache hit rate: 69% (1K open / 2K opened)
[OK] Open file limit used: 13% (1K/10K)
[OK] Table locks acquired immediately: 99% (39M immediate / 40M locks)

-------- MyISAM Metrics -----------------------------------------------------
[!!] Key buffer used: 19.2% (3B used / 15B cache)
[OK] Key buffer size / total MyISAM indexes: 14.9G/344.6M
[OK] Read Key buffer hit rate: 100.0% (1B cached / 127K reads)
[!!] Write Key buffer hit rate: 47.4% (10M cached / 5M writes)

-------- InnoDB Metrics -----------------------------------------------------
[--] InnoDB is enabled.
[!!] InnoDB  buffer pool / data size: 128.0M/3.0G
[!!] InnoDB buffer pool <= 1G and innodb_buffer_pool_instances(!=1).
[OK] InnoDB Used buffer: 89.60% (7339 used/ 8191 total)
[OK] InnoDB Read buffer efficiency: 99.93% (27964830575 hits/ 27983946430 total)
[!!] InnoDB Write buffer efficiency: 0.00% (0 hits/ 1 total)
[OK] InnoDB log waits: 0.00% (0 waits / 714836 writes)

-------- AriaDB Metrics -----------------------------------------------------
[--] AriaDB is disabled.

-------- Replication Metrics -------------------------------------------------
[--] No replication slave(s) for this server.
[--] This is a standalone server..

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    Increasing the query_cache size over 128M may reduce performance
Variables to adjust:
    query_cache_size (> 969M) [see warning above]
    innodb_buffer_pool_size (>= 2G) if possible.
    innodb_buffer_pool_instances (=1)

My Software:

• Litespeed 5.0.5
• PHP 5.6
• MySQL 5.6.23

 

[24x7server]

Hello,

Following threads may be help you on high load issues, Please check it

https://forums.cpanel.net/threads/troubleshooting-high-server-loads-on-linux-servers.319352/

For the mysql optimization I will suggest you please try to update the "Variables to adjust" as advised in the results and run the tuner again after 24 hours.

 

[cPanelMichael]

Hello

Yes, I suggest reviewing the URL referenced in the previous post in order to troubleshoot the load issues on your system.

Thank you.