[root@etch171 ~]# mysqltuner.pl --host 10.XXX --port XXX --user xxx --pass xxx --forcemem 128 >> MySQLTuner 1.2.0 - Major Hayden <major@mhtx.net> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering [--] Performing tests on 10.xxx:38xxx [OK] Logged in using credentials passed on the command line [--] Assuming 128 MB of physical memory [!!] Assuming 0 MB of swap space (use --forceswap to specify) -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.5.31-log -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 31M (Tables: 18) [--] Data in InnoDB tables: 913G (Tables: 131) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [!!] Total fragmented tables: 134 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 14d 1h 24m 13s (114M q [94.201 qps], 28M conn, TX: 441B, RX: 36B) [--] Reads / Writes: 89% / 11% [--] Total buffers: 33.1G global + 128.2M per thread (3072 max threads) [!!] Maximum possible memory usage: 417.9G (334293% of installed RAM) [OK] Slow queries: 0% (28K/114M) [OK] Highest usage of available connections: 5% (180/3072) [OK] Key buffer size / total MyISAM indexes: 256.0M/10.6M [OK] Key buffer hit rate: 100.0% (443K cached / 25 reads) [!!] Query cache efficiency: 8.3% (3M cached / 42M selects) [!!] Query cache prunes per day: 83423 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 120K sorts) [OK] Temporary tables created on disk: 0% (0 on disk / 239K total) [OK] Thread cache hit rate: 99% (2K created / 28M connections) [OK] Table cache hit rate: 98% (759 open / 771 opened) [OK] Open file limit used: 0% (39/204K) [OK] Table locks acquired immediately: 99% (43M immediate / 43M locks) [!!] InnoDB data size / buffer pool: 913.8G/32.0G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_limit (> 2M, or use smaller result sets) query_cache_size (> 124M) innodb_buffer_pool_size (>= 913G)
本机
[root@typhoeus79 MySQLTuner-perl-master]# perl mysqltuner.pl --user root --pass c0BsZjR57MgAGOk6IWZAMarVVg0 --socket /data1/guosong/mysql_5580/tmp/mysql.sock >> MySQLTuner 1.2.0 - Major Hayden <major@mhtx.net> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering [OK] Logged in using credentials passed on the command line -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.5.8-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 116K (Tables: 2) [--] Data in InnoDB tables: 1G (Tables: 30) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [!!] Total fragmented tables: 5 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 56d 14h 18m 18s (20K q [0.004 qps], 1K conn, TX: 886M, RX: 294M) [--] Reads / Writes: 78% / 22% [--] Total buffers: 696.0M global + 34.2M per thread (100 max threads) [OK] Maximum possible memory usage: 4.0G (25% of installed RAM) [OK] Slow queries: 0% (1/20K) [OK] Highest usage of available connections: 6% (6/100) [OK] Key buffer size / total MyISAM indexes: 32.0M/314.0K [OK] Key buffer hit rate: 99.5% (4K cached / 23 reads) [!!] Query cache efficiency: 1.4% (33 cached / 2K selects) [OK] Query cache prunes per day: 0 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 29 sorts) [OK] Temporary tables created on disk: 5% (16 on disk / 274 total) [OK] Thread cache hit rate: 99% (6 created / 1K connections) [OK] Table cache hit rate: 68% (75 open / 109 opened) [OK] Open file limit used: 0% (58/8K) [OK] Table locks acquired immediately: 100% (4K immediate / 4K locks) [!!] InnoDB data size / buffer pool: 1.3G/512.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Variables to adjust: query_cache_limit (> 2M, or use smaller result sets) innodb_buffer_pool_size (>= 1G)
pt-variable-advisor
•# WARN innodb_flush_log_at_trx_commit-1: InnoDB is not configured in strictly ACID mode. •# NOTE innodb_max_dirty_pages_pct: The innodb_max_dirty_pages_pct is lower than the default. •# NOTE log_warnings-2: Log_warnings must be set greater than 1 to log unusual events such as aborted connections. •# NOTE max_connect_errors: max_connect_errors should probably be set as large as your platform allows.
•# WARN sync_binlog: Binary logging is enabled, but sync_binlog isn't configured so that every transaction is flushed to the binary log for durability.
根据需求自动生成配置