Re: Squid is OK, but which UNIX for high loads?

I'm also running LInux (2.0.30) and am having similiar performance
problems. I'd consider switching to freeBSD (I have the latest CDROM);
what are the caveots?

Brian

On Thu, 22 May 1997, Arjan de Vet wrote:

> In article <01BC66CD.59BFEB90@dima.cyberia.net.lb> you write:
>
> >I'm using Squid 1.1.10 on a PPro 200MHZ + 256MB RAM, Linux 2.0.29.
> >Squid was running OK for month (started with 1.1.0), until recently, =
> >problems started as the load increased (~70,000 connections/hour). =
> >Symptoms:
> >1. Squid's response time increased dramatically. Telnetting to port 8082 =
> >(the cache port) takes 3-4 seconds on the command line for the =
> >"Connected.." string to appear.=20
> >2. Even when connected, Squid takes 3-4 seconds to retrieve even cached =
> >objects!
>
> I have experienced the same problems when I was running Squid on a
> Sparc20, 384MB memory with Solaris 2.5.1 and around 50000 conns/hour. As
> soon as the number of open connections came above a certain level,
> performanced dropped to even worse numbers than yours (>20 secs for
> small-sized cache hits).
>
> >It was suggested that this may be a problem with Squid, so we upgraded =
> >to 1.1.10 (we were running 1.1.8). It was also suggested that this may =
> >be a Linux problem, so we upgraded to 2.0.30 (which has the ISS). =
> >Performance improved, but the delays were still unacceptable. Note that =
> >memory is abundant (I always have 70-80 Megs free physical RAM) and CPU =
> >load rarely goes beyond 1.
>
> >I want to keep my existing hardware, which leaves me with 2 choices: NT =
> >and Solaris x86 (Don't want FreeBSD). NT is a no-no, but=20
>
> Why don't you want FreeBSD? Did you ever try it? I replaced the
> Sparc/Solaris setup with a PPRO200/128MB with FreeBSD 2.2.1 for a few days
> and the response times for the small-sized cache hits went down from >20
> secs to <300 milliseconds... I'm now using BSD/OS 3.0 (also BSD4.4
> derived) because the company wanted a commercial OS.
>
> >Is Solaris x86 2.5.1 recommended for such a setup?
>
> I've never tried Solaris on x86. But why not try the available options for
> some time and then make your decision? And if you need some tuning tips for
> FreeBSD or BSD/OS, contact me.
>
> Arjan
>
>
Received on Thu May 22 1997 - 16:30:44 MDT