Re: Performance tuning considerations.

From: Timh Bergström <timh.bergstrom#diino.net>
Date: Fri, 3 Sep 2010 14:15:28 +0200


Den 3 september 2010 12:00 skrev Alexander Staubo <alex#bengler.no>:
> 2010/9/3 Timh Bergström <timh.bergstrom#diino.net>:
>> # recycle time_wait sockets
>> net.ipv4.tcp_tw_recycle = 1
>> (should I use tcp_tw_reuse instead?)
>
> Yes. Actually you should neither without exceedingly careful testing.
> We ran with net.ipv4.tcp_tw_recycle enabled for a month, not realizing
> it was causing our site to be extremely slow for many visitors. See
> http://www.formilux.org/archives/haproxy/1008/3748.html for my list
> post about the problem.
>

Alright, thanks for the point (especially the link, that was some interesting reading), however these servers wont be behind a NAT, but better safe than sorry, I'll take it off my list.

//T Received on 2010/09/03 14:15

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