mysql tuning problem: show query and fragmented tables!
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>> MySQLTuner 0.9.9 - Major Hayden <firstname.lastname@example.org>
>> Bug reports, feature requests, and downloads at http://mysqltuner.com/
>> Run with '--help' for additional options and output filtering
-------- General Statistics --------------------------------------------------
[--] Skipped version check for MySQLTuner script
[OK] Currently running supported MySQL version 5.0.22
[OK] Operating on 64-bit architecture
-------- Storage Engine Statistics -------------------------------------------
[--] Status: -Archive -BDB -Federated -InnoDB -ISAM -NDBCluster
[--] Data in MyISAM tables: 2G (Tables: 469)
[--] Data in MEMORY tables: 16M (Tables: 3)
[!!] Total fragmented tables: 115
-------- Performance Metrics -------------------------------------------------
[--] Up for: 31m 59s (420K q [219.334 qps], 49K conn, TX: 453M, RX: 77M)
[--] Reads / Writes: 60% / 40%
[--] Total buffers: 1.8G global + 26.2M per thread (512 max threads)
[!!] Maximum possible memory usage: 14.9G (191% of installed RAM)
[!!] Slow queries: 7% (32K/420K)
[OK] Highest usage of available connections: 55% (284/512)
[OK] Key buffer size / total MyISAM indexes: 1.0G/395.2M
[OK] Key buffer hit rate: 99.1% (5M cached / 46K reads)
[OK] Query cache efficiency: 38.1% (70K cached / 185K selects)
[OK] Query cache prunes per day: 0
[OK] Sorts requiring temporary tables: 0% (87 temp sorts / 14K sorts)
[OK] Temporary tables created on disk: 5% (569 on disk / 11K total)
[OK] Thread cache hit rate: 99% (284 created / 49K connections)
[OK] Table cache hit rate: 99% (881 open / 887 opened)
[OK] Open file limit used: 25% (1K/5K)
[OK] Table locks acquired immediately: 96% (280K immediate / 289K locks)
report by tuning-primer.sh :
mysqld is alive
-- MYSQL PERFORMANCE TUNING PRIMER --
- By: Matthew Montgomery -
MySQL Version 5.0.22 x86_64
Uptime = 0 days 0 hrs 33 min 30 sec
Avg. qps = 218
Total Questions = 439489
Threads Connected = 14
Warning: Server has not been running for at least 48hrs.
It may not be safe to use these recommendations
Current thread_cache_size = 512
Current threads_cached = 272
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine
Current max_connections = 512
Current threads_connected = 12
Historic max_used_connections = 284
The number of used connections is 55% of the configured maximum.
Your max_connections variable seems to be fine.
Max Memory Ever Allocated : 8 G
Configured Max Per-thread Buffers : 13 G
Configured Max Global Buffers : 1 G
Configured Max Memory Limit : 14 G
Physical Memory : 7.78 G
Max memory limit exceeds 90% of physical memory
Current MyISAM index space = 389 M
Current key_buffer_size = 1 G
Key cache miss rate is 1 : 116
Key buffer fill ratio = 5.00 %
Your key_buffer_size seems to be too high.
Perhaps you can use these resources elsewhere
Query cache is enabled
Current query_cache_size = 32 M
Current query_cache_used = 8 M
Current query_cache_limit = 2 M
Current Query cache Memory fill ratio = 27.39 %
Current query_cache_min_res_unit = 4 K
MySQL won't cache query results that are larger than query_cache_limit in size
Current sort_buffer_size = 8 M
Current read_rnd_buffer_size = 7 M
Sort buffer seems to be fine
Current join_buffer_size = 2.00 M
You have had 0 queries where a join could not use an index properly
Your joins seem to be using indexes properly
OPEN FILES LIMIT
Current open_files_limit = 5120 files
The open_files_limit should typically be set to at least 2x-3x
that of table_cache if you have heavy MyISAM usage.
Your open_files_limit value seems to be fine
Current table_cache value = 2048 tables
You have a total of 489 tables
You have 883 open tables.
The table_cache value seems to be fine
Current max_heap_table_size = 767 M
Current tmp_table_size = 768 M
Of 11369 temp tables, 5% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fine
Current read_buffer_size = 7 M
Current table scan ratio = 10037 : 1
read_buffer_size seems to be fine
Current Lock Wait ratio = 1 : 30
You may benefit from selective use of InnoDB.