Re: [squid-users] Linux EXT3 optimizations for Squid

From: Ralf Hildebrandt <Ralf.Hildebrandt_at_charite.de>
Date: Mon, 9 Aug 2010 09:37:09 +0200

* Amos Jeffries <squid3_at_treenet.co.nz>:

> > Is this documented somewhere? I've been using diskd on ext4 on linux for
> > years now.
>
> Only in our upstream recommendations. It's due to a bug in the AIO
> implementation that only seems to show up in BSD derived systems.
>
> AUFS makes use of AIO threading support and should be great for BSD as
> well. Adrian foudn in his research that it has a scheduling/blocking
> problem in the Squid usage. It shows up on BSD derived systems but not
> Linux and slows AUFS down to speeds slower than diskd.
>
> So until somebody gets interested enough to fix that BSD is stuck on the
> older diskd as its fastest IO method.

Meaning: I should be using AUFS on Linux now, yes? 

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebrandt@charite.de | http://www.charite.de
Received on Mon Aug 09 2010 - 07:37:19 MDT

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