On Tue, Apr 16, 2002 at 06:47:18PM +0000, steve small wrote:
>
> Thanks to everybody for answers to my previous question.
>
> I'm planning of course to test this, but wanted to get some feedback on
> experience with the enable-async-io option on Linux. Various sources seem
> to imply that it's buggy on Linux; the Squid FAQ indicates that it only
> provides a performance benefit on heavily used caches. Any thoughts about
> the stability of Squid with async-io (which uses pthreads) on Linux on
> 2.4STABLE6, and whether you see a significant performance gain with it
> turned on?
>
We have different machines configured differently for testing purposes. I, too, read from sources that implied async-io (aufs/diskd) could be buggy on Linux despite being highly recommended. I used to have problems with Squid 2.4S4 with async-io/pthreads and using diskd, but we traced it be faulty memory. Currently, all of our proxies have been running for several weeks now 24/7 (reiserfs+diskd, reiserfs+aufs, ext2+stock) and none have had problems. I don't have concrete data measuring performance improvements, however.
--------------------------------------
Gino LV. Ledesma
Ateneo Cervini-Eliazo Networks (ACENT)
E-mail: ginoledesma@mac.com
URL: http://cersa.admu.edu.ph
Phone: (63)(2) 426-6001 ext. 5925
Received on Tue Apr 16 2002 - 23:44:23 MDT
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