>>  MySQLTuner 1.2.0 - Major Hayden <major@mhtx.net>
 >>  Bug reports, feature requests, and downloads at http://mysqltuner.com/
 >>  Run with '--help' for additional options and output filtering
[OK] Logged in using credentials from debian maintenance account.

-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.1.73-0ubuntu0.10.04.1
[!!] Switch to 64-bit OS - MySQL cannot currently use all of your RAM

-------- Storage Engine Statistics -------------------------------------------
[--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 139M (Tables: 52)
[--] Data in InnoDB tables: 2M (Tables: 50)
[!!] Total fragmented tables: 55

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

-------- Performance Metrics -------------------------------------------------
[--] Up for: 18h 50m 54s (266M q [3K qps], 29K conn, TX: 50B, RX: 25B)
[--] Reads / Writes: 86% / 14%
[--] Total buffers: 746.0M global + 24.3M per thread (151 max threads)
[!!] Allocating > 2GB RAM on 32-bit systems can cause system instability
[!!] Maximum possible memory usage: 4.3G (54% of installed RAM)
[OK] Slow queries: 0% (0/266M)
[OK] Highest usage of available connections: 20% (31/151)
[OK] Key buffer size / total MyISAM indexes: 600.0M/47.7M
[OK] Key buffer hit rate: 99.7% (25M cached / 86K reads)
[OK] Query cache efficiency: 99.5% (264M cached / 266M selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (1 temp sorts / 50K sorts)
[!!] Temporary tables created on disk: 46% (184K on disk / 396K total)
[OK] Thread cache hit rate: 99% (289 created / 29K connections)
[!!] Table cache hit rate: 6% (64 open / 1K opened)
[OK] Open file limit used: 4% (51/1K)
[OK] Table locks acquired immediately: 99% (1M immediate / 1M locks)
[OK] InnoDB data size / buffer pool: 2.7M/8.0M

-------- Recommendations -----------------------------------------------------
General recommendations:
    Run OPTIMIZE TABLE to defragment tables for better performance
    MySQL started within last 24 hours - recommendations may be inaccurate
    Enable the slow query log to troubleshoot bad queries
    When making adjustments, make tmp_table_size/max_heap_table_size equal
    Reduce your SELECT DISTINCT queries without LIMIT clauses
    Increase table_cache gradually to avoid file descriptor limits
Variables to adjust:
    tmp_table_size (> 16M)
    max_heap_table_size (> 16M)
    table_cache (> 64)