Re: [Fwd: Optimizing Squid performance]

Thanks for the prompt reply:

1) Top or free report 3 of 512Mb of physical memory free. Only 40Mb of swap
space used.
2) Why do not use raid if it controlled by hardware. I can understand not
using software RAID or RAID 5 with a poor controller but the RAID controller
of this box is a Smart-2 3200. Anyway, what do you recommend. How should I
set up the partitions (size, fs, etc) for max perf. Any other, squid related
parameters I should tweek?
3) May that is the reason.. I will check it and let you know.

Thanks,

Athanasios Kouroussis
Unifon - T.C.P. S.A.
akourousssis@unifon.com.ar

Duane Wessels wrote:

> On Mon, 7 Aug 2000, Athanasios Kouroussis wrote:
>
> > Hi,
> >
> > I am running Squid 2.4devel-ntlm3 under Linux 2.2.14 on a Compaq
> > Proliant 1600 (1 PIII 600Mhz, 512Mb RAM, 4x9GB SCSI-3 hard disks on a
> > single RAID 5 logical unit controlled by a SMART-2 RAID controller).
> > I am attending approx. 1000 users and I am getting (through cachemgr)
> > about 2000hits/min at peak time. I am using squidGuard a redirector for
> > filtering banned sites and a home made authenticator for NTLM users.
> > CPU utilization is low (normally above 90% idle state).
> >
> > 1) The whole 512Mb of RAM are in use most of the time (even at 3am when
> > only 10-20 users are active). Is this normal? The box used to have 256Mb
> > (also all in use) and I notice no difference in performance after
> > duplicating the size of the box's RAM.
>
> Its hard to say if its normal. How did you measure memory usage?
>
> > 2) I would wish to fine tune my box for maximum performance. Although it
> > can attend 2000hits/min I think it can do better than that. Is there a
> > certain manner of knowing that squid is the bottleneck and not my 2Mb
> > internet link? What should I change in the conf file and/or OS and /or
> > box in order to achive max. performance? The conf file is almost
> > untouched except the dir locations and acl sections.
>
> First, never use RAID. Use boring unix filesystems, one per
> disk drive.
>
> > 3) I use 10 authenticators. If I shut squid down, it does not kill the
> > authentication chldren. Instead they remain alive, with PPID 1 and
> > consuming all of the box's CPU (each 10% aprox). Do I have to take any
> > special considerations in my authenticator in order for squid to kill
> > gracefully the processes when going down?
>
> Sounds like your auth process does not exit when it receives
> an end-of-file condition.
>
> Duane W.
Received on Mon Aug 07 2000 - 18:22:13 MDT