与其他许多人一样，我从过去学习了很多信息，现在我可以独立运行服务器，现在我是新的SQL调优，我一直在寻找networking，调整似乎是一个困难的想法，所以我会感激一些build议/帮助。 任何人都可以评论下面的结果是好的，坏的或最坏的。
我下载并启动了mysqltuner.pl，结果是：
-------- Performance Metrics ------------------------------------------------- [--] Up for: 1d 5h 10m 1s (488K q [4.654 qps], 9K conn, TX: 2B, RX: 114M) [--] Reads / Writes: 85% / 15% [--] Total buffers: 522.0M global + 1.1M per thread (151 max threads) [OK] Maximum possible memory usage: 691.9M (8% of installed RAM) [OK] Slow queries: 0% (1/488K) [OK] Highest usage of available connections: 5% (9/151) [OK] Key buffer size / total MyISAM indexes: 8.0M/729.0K [OK] Key buffer hit rate: 100.0% (465K cached / 30 reads) [OK] Query cache efficiency: 70.9% (305K cached / 431K selects) [!!] Query cache prunes per day: 38311 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 35K sorts) [!!] Joins performed without indexes: 1369 [!!] Temporary tables created on disk: 58% (6K on disk / 11K total) [OK] Thread cache hit rate: 99% (9 created / 9K connections) [OK] Table cache hit rate: 33% (2K open / 5K opened) [OK] Open file limit used: 3% (160/5K) [OK] Table locks acquired immediately: 100% (222K immediate / 222K locks) -------- InnoDB Metrics ----------------------------------------------------- [--] InnoDB is enabled. [--] InnoDB BufferPool Size :450.0M [--] InnoDB BufferPool Inst :1 [OK] InnoDB buffer pool / data size: 450.0M/310.3M [OK] InnoDB buffer pool instances: 1 [OK] InnoDB log waits: 0 -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Restrict Host for user@% to user@SpecificDNSorIp Adjust your join queries to always utilize indexes When making adjustments, make tmp_table_size/max_heap_table_size equal Reduce your SELECT DISTINCT queries without LIMIT clauses Variables to adjust: query_cache_size (> 16M) join_buffer_size (> 256.0K, or always use indexes with joins) tmp_table_size (> 32M) max_heap_table_size (> 32M) my.cnf如下
mysqld] local-infile=0 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 query_cache_type = 1 query_cache_size= 16777216 query_cache_limit=1048576 innodb_buffer_pool_instances =1 innodb_buffer_pool_size = 450M tmp_table_size = 32M max_heap_table_size = 32M join_buffer_size=256K skip-host-cache skip-name-resolve explicit_defaults_for_timestamp=TRUE [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid
并在服务器信息和内存下方
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 4 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: processor : 5 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 2000.074 cache size : 32 KB fpu : yes fpu_exception : yes cpuid level : 4 wp : yes flags : fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm rep_good unfair_spinlock pni hypervisor bogomips : 4000.14 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management:
和记忆如下：
free total used free shared buffers cached Mem: 8060476 7057992 1002484 0 305180 4631680 -/+ buffers/cache: 2121132 5939344 Swap: 1048568 383800 664768 show variables like '%query_cache%'; +------------------------------+----------+ | Variable_name | Value | +------------------------------+----------+ | have_query_cache | YES | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 16777216 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | +------------------------------+----------+ 6 rows in set (0.00 sec) SHOW STATUS LIKE 'qcache%'; +-------------------------+---------+ | Variable_name | Value | +-------------------------+---------+ | Qcache_free_blocks | 1597 | | Qcache_free_memory | 4456848 | | Qcache_hits | 313793 | | Qcache_inserts | 120859 | | Qcache_lowmem_prunes | 48666 | | Qcache_not_cached | 6298 | | Qcache_queries_in_cache | 3869 | | Qcache_total_blocks | 10227 | +-------------------------+---------+ 8 rows in set (0.00 sec)
我正在使用Mysql 5.6.12在此先感谢您的帮助STef
Percona conf
# Generated by Percona Configuration Wizard (http://tools.percona.com/) version REL5-20120208 # Configuration name server-8 generated for mail.com at 2015-07-09 23:48:22 [mysql] # CLIENT # port = 3306 socket = /var/lib/mysql/mysql.sock [mysqld] # GENERAL # user = mysql default-storage-engine = InnoDB socket = /var/lib/mysql/mysql.sock pid-file = /var/lib/mysql/mysql.pid # MyISAM # key-buffer-size = 32M myisam-recover = FORCE,BACKUP # SAFETY # max-allowed-packet = 16M max-connect-errors = 1000000 skip-name-resolve sql-mode = STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ONLY_FULL_GROUP_BY sysdate-is-now = 1 innodb = FORCE innodb-strict-mode = 1 # DATA STORAGE # datadir = /var/lib/mysql/ # BINARY LOGGING # log-bin = /var/lib/mysql/mysql-bin expire-logs-days = 14 sync-binlog = 1 # CACHES AND LIMITS # tmp-table-size = 32M max-heap-table-size = 32M query-cache-type = 0 query-cache-size = 0 max-connections = 500 thread-cache-size = 50 open-files-limit = 65535 table-definition-cache = 4096 table-open-cache = 10240 # INNODB # innodb-flush-method = O_DIRECT innodb-log-files-in-group = 2 innodb-log-file-size = 256M innodb-flush-log-at-trx-commit = 1 innodb-file-per-table = 1 innodb-buffer-pool-size = 6G # LOGGING # log-error = /var/lib/mysql/mysql-error.log log-queries-not-using-indexes = 1 slow-query-log = 1 slow-query-log-file = /var/lib/mysql/mysql-slow.log