'top' 给出:
top - 13:07:35 up 827 days, 8:18, 2 users, load average: 5,26, 5,38, 5,45
KiB Mem: 32848512 total, 32265240 used, 583272 free, 261908 buffers
KiB Swap: 1046520 total, 313784 used, 732736 free, 28190744 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
23927 mysql 20 0 917m 243m 8152 S 553,7 0,8 65:09.27 mysqld
mysql> SHOW FULL PROCESSLIST;
+------+--------+-----------------+-------------+---------+------+--------------+--------------------------------------------------------------------+
| Id | User | Host | db | Command | Time | State | Info |
+------+--------+-----------------+-------------+---------+------+--------------+--------------------------------------------------------------------+
| 600 | oneill | localhost | NULL | Query | 0 | NULL | SHOW FULL PROCESSLIST |
| 956 | oneill | 127.0.0.1:42219 | FoxPoker | Sleep | 0 | | NULL |
| 1318 | oneill | 127.0.0.1:44207 | FoxPoker | Sleep | 0 | | NULL |
| 1319 | oneill | 127.0.0.1:44210 | FoxPoker | Sleep | 0 | | NULL |
| 1321 | oneill | 127.0.0.1:44215 | FoxPoker | Sleep | 0 | | NULL |
| 1489 | oneill | 127.0.0.1:45218 | FoxPoker | Sleep | 0 | | NULL |
| 1490 | oneill | 127.0.0.1:45217 | FoxPoker | Sleep | 0 | | NULL |
| 1700 | oneill | 127.0.0.1:46246 | FoxPoker | Sleep | 0 | | NULL |
| 1701 | oneill | 127.0.0.1:46248 | FoxPoker | Sleep | 0 | | NULL |
| 2203 | oneill | 127.0.0.1:49218 | FoxPoker | Sleep | 0 | | NULL |
| 3262 | oneill | 127.0.0.1:54855 | FoxPoker | Sleep | 0 | | NULL |
| 3263 | oneill | 127.0.0.1:54858 | FoxPokerDev | Sleep | 0 | | NULL |
| 3462 | oneill | 127.0.0.1:56029 | FoxPoker | Sleep | 0 | | NULL |
| 4269 | oneill | 127.0.0.1:60551 | FoxPoker | Sleep | 0 | | NULL |
| 4945 | oneill | 127.0.0.1:36032 | FoxPoker | Query | 3 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="pMGmpY" |
| 4950 | oneill | 127.0.0.1:36073 | FoxPoker | Query | 1 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="tAf994" |
| 4952 | oneill | 127.0.0.1:36083 | FoxPoker | Query | 1 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="ea6Kv2" |
| 4954 | oneill | 127.0.0.1:36097 | FoxPoker | Query | 1 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="yFYvur" |
| 4955 | oneill | 127.0.0.1:36098 | FoxPoker | Query | 1 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="73qTcv" |
| 4956 | oneill | 127.0.0.1:36099 | FoxPoker | Query | 1 | Sending data | SELECT COUNT(deviceId) FROM devices WHERE BINARY deviceId="q64MfG" |
+------+--------+-----------------+-------------+---------+------+--------------+--------------------------------------------------------------------+
mysql> show status like '%onn%';
+--------------------------+-------+
| Variable_name | Value |
+--------------------------+-------+
| Aborted_connects | 1 |
| Connections | 5528 |
| Max_used_connections | 25 |
| Ssl_client_connects | 0 |
| Ssl_connect_renegotiates | 0 |
| Ssl_finished_connects | 0 |
| Threads_connected | 19 |
+--------------------------+-------+
7 rows in set (0.00 sec)
(连接不断增长。)
mysqladmin status -h localhost -u -p
Uptime: 924 Threads: 21 Questions: 92803 Slow queries: 1677 Opens: 1025 Flush tables: 1 Open tables: 265 Queries per second avg: 100.436
我重新启动了 mysql，优化了所有表，但没有任何改变。
有什么想法吗？
最佳答案
登录到 MySQL 并使用以下命令检查昂贵的查询:
SHOW FULL PROCESSLIST;
找到导致 1600 慢查询的违规 sql 并对其进行性能调整。
您还可以通过以下文档查看启用慢速查询日志记录。
关于mysql - 如何判断和解决mysql CPU占用率高的问题？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44135670/