下載地址： wget https://www.day32.com/MySQL/tuning-primer.sh
[html] [root@mwtec-80 data]# sh tuning-primer.sh which: no bc in (/usr/local/cmake/bin:/usr/local/mysql3306/bin:/home/hadoop/hadoop-0.20.2/bin:/usr/java/jdk1.6.0_26/bin:/usr/java/jdk1.6.0_26/jre/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/home/hadoop/pig-0.10.1/bin:/root/bin) Error: Command line calculator 'bc' not found!
yum install bc [root@mwtec-80 mysql3306]# ./tuning-primer.sh -- MYSQL PERFORMANCE TUNING PRIMER -- - By: Matthew Montgomery - MySQL Version 5.6.12 x86_64 Uptime = 0 days 1 hrs 55 min 50 sec Avg. qps = 0 Total Questions = 50 Threads Connected = 1 Warning: Server has not been running for at least 48hrs. It may not be safe to use these recommendations To find out more information on how each of these runtime variables effects performance visit: https://dev.mysql.com/doc/refman/5.6/en/server-system-variables.html Visit https://www.mysql.com/products/enterprise/advisors.html for info about MySQL's Enterprise Monitoring and Advisory Service SLOW QUERIES --慢查詢情況 The slow query log is NOT enabled. Current long_query_time = 10.000000 sec. You have 0 out of 71 that take longer than 10.000000 sec. to complete Your long_query_time seems to be fine BINARY UPDATE LOG The binary update log is NOT enabled. You will not be able to do point in time recovery See https://dev.mysql.com/doc/refman/5.6/en/point-in-time-recovery.html WORKER THREADS --工作線程 Current thread_cache_size = 9 Current threads_cached = 0 Current threads_per_sec = 0 Historic threads_per_sec = 0 Your thread_cache_size is fine MAX CONNECTIONS --最大連接數 Current max_connections = 151 Current threads_connected = 1 Historic max_used_connections = 1 The number of used connections is 0% 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-allocating INNODB STATUS Current InnoDB index space = 0 bytes Current InnoDB data space = 80 K Current InnoDB buffer pool free = 97 % Current innodb_buffer_pool_size = 128 M Depending on how much space your innodb indexes take up it may be safe to increase this value to up to 2 / 3 of total system memory MEMORY USAGE --內存使用情況 Max Memory Ever Allocated : 154 M Configured Max Per-thread Buffers : 169 M Configured Max Global Buffers : 153 M Configured Max Memory Limit : 322 M Physical Memory : 3.61 G Max memory limit seem to be within acceptable norms KEY BUFFER --myisam表的key buffer使用情況 No key reads?! Seriously look into using some indexes Current MyISAM index space = 108 K Current key_buffer_size = 8 M Key cache miss rate is 1 : 0 Key buffer free ratio = 81 % Your key_buffer_size seems to be fine QUERY CACHE --查詢緩存情況 Query cache is enabled Current query_cache_size = 1 M Current query_cache_used = 16 K Current query_cache_limit = 1 M Current Query cache Memory fill ratio = 1.64 % 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 size SORT OPERATIONS --排序情況 Current sort_buffer_size = 256 K Current read_rnd_buffer_size = 256 K No sort operations have been performed Sort buffer seems to be fine JOINS --連接情況 Current join_buffer_size = 260.00 K 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 --最大打開文件情況 Current open_files_limit = 5000 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 TABLE CACHE --表緩存使用情況 Current table_open_cache = 2000 tables Current table_definition_cache = 1400 tables You have a total of 80 tables You have 80 open tables. The table_cache value seems to be fine TEMP TABLES -- 臨時表使用情況 Current max_heap_table_size = 16 M Current tmp_table_size = 16 M Of 337 temp tables, 10% were created on disk Created disk tmp tables ratio seems fine TABLE SCANS -- 表掃描情況 Current read_buffer_size = 128 K Current table scan ratio = 6 : 1 read_buffer_size seems to be fine TABLE LOCKING --表鎖定情況 Current Lock Wait ratio = 0 : 326 Your table locking seems to be fine