Optimera MySQL
Tänkte tipsa om ännu ett verktyg för att optimera mysql och hålla ordning på allt, och det är tuning-primer.sh
Du kan ladda hem scriptet här:
http://www.day32.com/MySQL/tuning-primer.sh
Här nedan kan du se ett exempel på resultatet från tuning-primer.sh:
— MYSQL PERFORMANCE TUNING PRIMER –
– By: Matthew Montgomery -MySQL Version 5.0.51a-24+lenny2-log i486
Uptime = 0 days 0 hrs 0 min 14 sec
Avg. qps = 73
Total Questions = 1028
Threads Connected = 2Warning: Server has not been running for at least 48hrs.
It may not be safe to use these recommendationsTo find out more information on how each of these
runtime variables effects performance visit:http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html
Visit http://www.mysql.com/products/enterprise/advisors.html
for info about MySQL’s Enterprise Monitoring and Advisory ServiceSLOW QUERIES
The slow query log is enabled.
Current long_query_time = 2 sec.
You have 0 out of 1124 that take longer than 2 sec. to complete
Your long_query_time seems to be fineBINARY UPDATE LOG
The binary update log is NOT enabled.
You will not be able to do point in time recovery
See http://dev.mysql.com/doc/refman/5.0/en/point-in-time-recovery.htmlWORKER THREADS
Current thread_cache_size = 8
Current threads_cached = 1
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fineMAX CONNECTIONS
Current max_connections = 125
Current threads_connected = 1
Historic max_used_connections = 2
The number of used connections is 1% of the configured maximum.
You are using less than 10% of your configured max_connections.
Lowering max_connections could help to avoid an over-allocation of memory
See ”MEMORY USAGE” section to make sure you are not over-allocatingNo InnoDB Support Enabled!
MEMORY USAGE
Max Memory Ever Allocated : 71 M
Configured Max Per-thread Buffers : 328 M
Configured Max Global Buffers : 66 M
Configured Max Memory Limit : 394 M
Physical Memory : 1011 M
Max memory limit seem to be within acceptable normsKEY BUFFER
Current MyISAM index space = 14 M
Current key_buffer_size = 16 M
Key cache miss rate is 1 : 13
Key buffer free ratio = 87 %
Your key_buffer_size seems to be fineQUERY CACHE
Query cache is enabled
Current query_cache_size = 40 M
Current query_cache_used = 388 K
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = .94 %
Current query_cache_min_res_unit = 4 K
Your query_cache_size seems to be too high.
Perhaps you can use these resources elsewhere
MySQL won’t cache query results that are larger than query_cache_limit in sizeSORT OPERATIONS
Current sort_buffer_size = 2 M
Current read_rnd_buffer_size = 256 K
Sort buffer seems to be fineJOINS
Current join_buffer_size = 132.00 K
You have had 0 queries where a join could not use an index properly
Your joins seem to be using indexes properlyOPEN FILES LIMIT
Current open_files_limit = 4247 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 fineTABLE CACHE
Current table_cache value = 2056 tables
You have a total of 673 tables
You have 673 open tables.
The table_cache value seems to be fineTEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 208 temp tables, 16% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Created disk tmp tables ratio seems fineTABLE SCANS
Current read_buffer_size = 128 K
Current table scan ratio = 7 : 1
read_buffer_size seems to be fineTABLE LOCKING
Current Lock Wait ratio = 0 : 2056
Your table locking seems to be fine
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