Re: [squid-users] Hard Drive Latency

On Sun, 2004-08-29 at 22:31 -0500, Joe Cooper wrote:
> James Gray wrote:
>
> > Is there anything to be gained by switching to AUFS in a SCSI RAID 0+1
> > (real hardware RAID with 64MB cache etc) environment? How long is a
> > piece of string....I know - just curious from a "theoretical" point of
> > view.
> >
> > We often see system (i.e., not "nice" or "user") utilisation go up under
> > heavy Squid load on FreeBSD, but I can't say whether or not this results
> > in a noticeable performance degradation - we've never measured it and
> > the users haven't complained (about proxy performance anyway).
>
> FreeBSD is not a supported environment for AUFS, as far as I know. You
> would use diskd instead, but it doesn't do anything on a single device
> system, as I assume you have. AUFS on a single disk system does make a
> measurable difference (regardless of controller and RAID).
>
> RAID of any sort is usually not recommended for Squid if performance
> matters to you at all.

It should be supported just fine these days... freeBSD has kernel
threads now.

Rob