mysqltuner

-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.1.63-0+squeeze1-log
[OK] Operating on 64-bit architecture

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 55M (Tables: 95)
[--] Data in InnoDB tables: 12G (Tables: 88)
[--] Data in ARCHIVE tables: 1G (Tables: 3)
[!!] Total fragmented tables: 99

-------- Security Recommendations  -------------------------------------------
[OK] All database users have passwords assigned

-------- Performance Metrics -------------------------------------------------
[--] Up for: 7h 6m 3s (3M q [132.097 qps], 181K conn, TX: 1B, RX: 225M)
[--] Reads / Writes: 55% / 45%
[--] Total buffers: 12.8G global + 5.2M per thread (1500 max threads)
[!!] Maximum possible memory usage: 20.5G (131% of installed RAM)
[OK] Slow queries: 1% (63K/3M)
[OK] Highest usage of available connections: 30% (454/1500)
[OK] Key buffer size / total MyISAM indexes: 20.0M/18.8M
[OK] Key buffer hit rate: 99.8% (1M cached / 1K reads)
[!!] Query cache is disabled
[OK] Sorts requiring temporary tables: 1% (699 temp sorts / 66K sorts)
[OK] Temporary tables created on disk: 0% (135 on disk / 16K total)
[OK] Thread cache hit rate: 99% (454 created / 181K connections)
[OK] Table cache hit rate: 31% (295 open / 942 opened)
[OK] Open file limit used: 0% (282/61K)
[OK] Table locks acquired immediately: 99% (2M immediate / 2M locks)
[OK] InnoDB data size / buffer pool: 12.3G/12.8G

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    MySQL started within last 24 hours - recommendations may be inaccurate
    Reduce your overall MySQL memory footprint for system stability
Variables to adjust:
  *** MySQL's maximum memory usage is dangerously high ***
  *** Add RAM before increasing MySQL buffer variables ***
    query_cache_size (>= 8M)