tweaking FreeBSD for Squid using

[Alain Fauconnet]

On Tue, Apr 15, 2003 at 12:40:35PM +0200, Frank Bonnet wrote:
> Hi
> 
> I need infos in order to tweak a FreeBSD box kernel
> to use the Squid cache/proxy software on a dedicated 
> machine.
> 
> The hardware is OK P4 2.2 Ghz with 2.5 Gb RAM
> and a 36 Gb / 15k rpm disk for caching.


To my experience, heavly loaded Squid boxes run into  I/O  bottlenecks
faster than anything else (apart from memory maybe, but you have ample
memory).

My  advice  would  be:  get more disks. A single spindle is just not a
good configuration for Squid, even a fast  disk.  You  didn't  mention
whether is it SCSI or IDE. I usually go  for  SCSI  for  anything  I/O
intensive,  although  that's  more  a cultural thing than based on any
hard evidence I've seen.

Don't  do  RAID. Bring up a filesystem on each disk (with soft updates
of  course),  mount  them  "-o  noatime"  and  configure  Squid to use
multiple cache dirs.

Sorry if I'm just telling the obvious here. I'm sure someone will come
up with some finer tuning advice.

Bonne chance,
-- 
Alain Fauconnet
IT Security Specialist & CISO -- ITServ
Asian Institute of Technology