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Need help Mysql Optimizations

Discussion in 'Workarounds and Optimization' started by eliko, Jun 11, 2014.

  1. eliko

    eliko Registered

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    I'm using MySQLTuner.pl to optimize my site/srever.... though I'm not entirely sure how to resolve some of these issues and am wondering if someone can help me out.

    I have VPS with 4GB ram, THIS IS my.cnf settings:

    Code:
    [mysqld]    
    expire_logs_days=14
    sync_binlog=1
    
    query_cache_limit=32M
    query_cache_size=128M
    
    slow_query_log=1
    log_queries_not_using_indexes=0
    
    thread_cache_size=50
    
    max_allowed_packet=16M
    max_connect_errors=1000000
    max_connections=250
    key_buffer_size=8M
    
    open_files_limit=65535
    tmp_table_size=256M
    max_heap_table_size=256M
    table_definition_cache=2048
    table_open_cache=2048
    default_storage_engine=InnoDB
    
    innodb_flush_method=O_DIRECT
    innodb_file_per_table=1
    innodb_log_files_in_group=2
    innodb_additional_mem_pool_size=40M
    innodb_max_dirty_pages_pct=90
    innodb_flush_log_at_trx_commit=1
    innodb_log_buffer_size=64M
    innodb_log_file_size=256M
    innodb_buffer_pool_size=1152M
    
    Here's the output of mysqltuner:

    Code:
    -------- Performance Metrics -------------------------------------------------
    [--] Up for: 2d 8h 36m 40s (7M q [34.897 qps], 504K conn, TX: 41B, RX: 735M)
    [--] Reads / Writes: 68% / 32%
    [--] Total buffers: 2.0G global + 2.8M per thread (200 max threads)
    [OK] Maximum possible memory usage: 2.5G (63% of installed RAM)
    [OK] Slow queries: 0% (30K/7M)
    [OK] Highest usage of available connections: 20% (40/200)
    [OK] Key buffer size / total MyISAM indexes: 8.0M/7.8M
    [OK] Key buffer hit rate: 99.9% (1M cached / 1K reads)
    [OK] Query cache efficiency: 29.3% (1M cached / 4M selects)
    [!!] Query cache prunes per day: 11573
    [OK] Sorts requiring temporary tables: 0% (3K temp sorts / 999K sorts)
    [!!] Temporary tables created on disk: 48% (54K on disk / 112K total)
    [OK] Thread cache hit rate: 99% (40 created / 504K connections)
    [OK] Table cache hit rate: 33% (499 open / 1K opened)
    [OK] Open file limit used: 0% (380/65K)
    [OK] Table locks acquired immediately: 99% (4M immediate / 4M locks)
    [OK] InnoDB buffer pool / data size: 1.1G/1001.0M
    [OK] InnoDB log waits: 0
    -------- Recommendations -----------------------------------------------------
    General recommendations:
        Run OPTIMIZE TABLE to defragment tables for better performance
        Increasing the query_cache size over 128M may reduce performance
        Temporary table size is already large - reduce result set size
        Reduce your SELECT DISTINCT queries without LIMIT clauses
    Variables to adjust:
        query_cache_size (> 512M) [see warning above]
    
    Is there anything I also can improve for better performance?

    thank you
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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  3. eliko

    eliko Registered

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    1. I would be happy if you can give their opinions on the setting in my.cnf
    (Because I'm not an expert and the setting is what I saw in other systems on the internet, maybe some incorrect)

    2. i want to optimize for fast and efficient

    thank you.
     
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