I have used mysqltuner.pl in the past, but I don't really know if the values that recommends me are good.
[--] Up for: 50d 4h 24m 5s (41M q [9.684 qps], 1M conn, TX: 147B, RX: 6B) [--] Reads / Writes: 77% / 23% [--] Total buffers: 688.0M global + 2.7M per thread (100 max threads) [OK] Maximum possible memory usage: 956.8M (46% of installed RAM) [OK] Slow queries: 0% (0/41M) [OK] Highest usage of available connections: 19% (19/100) [OK] Key buffer size / total MyISAM indexes: 16.0M/8.6M [OK] Key buffer hit rate: 100.0% (31M cached / 2K reads) [OK] Query cache efficiency: 93.4% (33M cached / 35M selects) [!!] Query cache prunes per day: 18570 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 595K sorts) [!!] Temporary tables created on disk: 26% (177K on disk / 660K total) [OK] Thread cache hit rate: 99% (148 created / 1M connections) [!!] Table cache hit rate: 19% (2K open / 10K opened) [OK] Open file limit used: 25% (1K/4K) [OK] Table locks acquired immediately: 99% (3M immediate / 3M locks) [OK] InnoDB data size / buffer pool: 375.5M/512.0M
Suggestions:
-------- Recommendations -----------------------------------------------------
General recommendations:
Run OPTIMIZE TABLE to defragment tables for better performance
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:
query_cache_size (> 16M)
tmp_table_size (> 128M)
max_heap_table_size (> 128M)
table_cache (> 2048)
don't you think the values are high enough?
thx