Question

由于mysql守护程序，我的服务器的平均负载非常高，有时甚至超过100.0。首先我认为它是因为mysql的慢查询，这里是mysql-slow.log的一个片段：

# Time: 150423

  6:38:03
# User@Host: root[root] @ localhost []
# Query_time: 1.349115  Lock_time: 0.000181 Rows_sent: 40  Rows_examined: 16552
SET timestamp=1429763883;
SELECT * FROM videos, videos_tags WHERE videos.Id = videos_tags.Id AND videos.ImporterTag=0  AND Published IS NOT NULL ORDER BY Published DESC LIMIT 0,40; 
# Time: 150423  6:38:36
# User@Host: root[root] @ localhost []
# Query_time: 2.110382  Lock_time: 0.000107 Rows_sent: 40  Rows_examined: 18517
use db;
SET timestamp=1429763916;
SELECT * FROM videos, videos_tags WHERE videos.Id = videos_tags.Id AND videos.ImporterTag=0  AND Published IS NOT NULL ORDER BY Published DESC LIMIT 1080,40;
# Time: 150423  6:39:26
# User@Host: root[root] @ localhost []
# Query_time: 1.855701  Lock_time: 0.000075 Rows_sent: 200  Rows_examined: 19316
use db;
SET timestamp=1429763966;
SELECT * FROM videos, videos_tags WHERE videos.Id = videos_tags.Id AND videos.ImporterTag=0  AND Published IS NOT NULL ORDER BY RAND() LIMIT 0,200;

之后我收到一些消息，表格被标记为“崩溃”。我使用mysqlcheck和myisamchk修复它们，直到现在它似乎运行正常。

有人可以告诉我这些查询是否像慢速查询？如果没有，失败应该是因为崩溃的数据库。

Mysql高负载平均值

0 个答案: