MySQL optimization

Permanently deleted user

• February 15, 2014 11:59

Hi Can you help me optimize my database: now I have : [mysqld] innodb_file_per_table=1 open_files_limit=5294 mysqltuner: [PHP]-------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.5.35-cll [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 4M (Tables: 50) [--] Data in InnoDB tables: 64M (Tables: 1364) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [!!] Total fragmented tables: 24 -------- Performance Metrics ------------------------------------------------- [--] Up for: 10d 14h 31m 35s (7M q [8.648 qps], 149K conn, TX: 20B, RX: 1B) [--] Reads / Writes: 95% / 5% [--] Total buffers: 168.0M global + 2.8M per thread (151 max threads) [OK] Maximum possible memory usage: 583.2M (3% of installed RAM) [OK] Slow queries: 0% (32/7M) [OK] Highest usage of available connections: 11% (18/151) [OK] Key buffer size / total MyISAM indexes: 8.0M/1.2M [OK] Key buffer hit rate: 98.2% (460K cached / 8K reads) [!!] Query cache is disabled [OK] Sorts requiring temporary tables: 0% (223 temp sorts / 952K sorts) [!!] Joins performed without indexes: 2998 [!!] Temporary tables created on disk: 45% (721K on disk / 1M total) [!!] Thread cache is disabled [!!] Table cache hit rate: 0% (400 open / 126K opened) [OK] Open file limit used: 1% (74/5K) [OK] Table locks acquired immediately: 99% (8M immediate / 8M locks) [OK] InnoDB data size / buffer pool: 64.6M/128.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Enable the slow query log to troubleshoot bad queries Adjust your join queries to always utilize indexes When making adjustments, make tmp_table_size/max_heap_table_size equal Reduce your SELECT DISTINCT queries without LIMIT clauses Set thread_cache_size to 4 as a starting value Increase table_cache gradually to avoid file descriptor limits Variables to adjust: query_cache_size (>= 8M) join_buffer_size (> 128.0K, or always use indexes with joins) tmp_table_size (> 16M) max_heap_table_size (> 16M) thread_cache_size (start at 4) table_cache (> 400) [/PHP] thanks [COLOR="silver">- - - Updated - - - Would this be ok? [mysqld] innodb_file_per_table=1 open_files_limit=5294 log-slow-queries=/var/lib/mysql/slow.log interactive_timeout=300 log-slow-queries=/var/lib/mysql/slow.log query_cache_size=50M skip-bdb query_cache_type=1 tmp_table_size=64M max_heap_table_size=64M thread_cache_size=4 table_cache=600 wait_timeout=300

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  Permanently deleted user

  • February 15, 2014 17:14

  When I put this in my.conf [mysqld] innodb_file_per_table=1 open_files_limit=5294 log-slow-queries=/var/lib/mysql/slow.log interactive_timeout=300 query_cache_size=50M skip-bdb query_cache_type=1 tmp_table_size=64M max_heap_table_size=64M thread_cache_size=4 table_cache=600 wait_timeout=300 I get: Waiting for mysql to restart....................................................................finished. mysql has failed, please contact the sysadmin (result was "mysql is not running"). Can you help me?

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  Permanently deleted user

  • February 15, 2014 17:26

  This is making problems: skip-bdb Now I have this: [mysqld] innodb_file_per_table=1 open_files_limit=6020 log-slow-queries=/var/lib/mysql/slow.log interactive_timeout=300 query_cache_size=50M query_cache_type=1 query_cache_type=1 tmp_table_size=64M max_heap_table_size=64M thread_cache_size=4 table_cache=600 wait_timeout=300 query_cache_limit=64M And the result: >> MySQLTuner 1.2.0_1 - Major Hayden >> Bug reports, feature requests, and downloads at

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  thinkbot

  • February 15, 2014 20:36

  it's good configuration, don't worry

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  cPanelMichael

  • February 17, 2014 13:27

  [quote="mehnihma, post: 1573652">This is making problems: skip-bdb
  I just wanted to note that this option is not available in your version of MySQL (5.5) in-case others come across this thread with a similar error message. Thank you.

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