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DmitrySemenov
Asked: 2012-08-18 12:52:41 +0800 CST

Some problems with MySQL [duplicate]

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Possible Duplicate:
Huge amount of TIME_WAIT connections says netstat

I have 2167 connections like that:

tcp        0      0 127.0.0.1:34276             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:34910             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:3306              127.0.0.1:42749             TIME_WAIT
tcp        0      0 127.0.0.1:34871             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:34845             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:34018             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:35336             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:34617             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:3306              127.0.0.1:33750             TIME_WAIT
tcp        0      0 127.0.0.1:34072             127.0.0.1:3306              TIME_WAIT
tcp        0      0 127.0.0.1:34141             127.0.0.1:3306              TIME_WAIT

[root@saritasa semenov]# netstat -an | grep 127.0.0.1 | grep 3306 | wc
1360    8160  121040

Any ideas why and how can I resolve it?

Mysql SHOW PROCESSLIST; does give me just 5 connections. Any ideas?

mysql

1 Answers

  1. Best Answer

    lower the following

     /proc/sys/net/ipv4/tcp_fin_timeout

    You have so many due it being a security feature for tcp. I forget all the details I just know what the end reason for it was. It's not a big deal to have a lot of time wait's at all

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