Re: SMP scalability goal

On Thu, Apr 24, 2008 at 1:31 PM, Alex Rousskov
<rousskov@measurement-factory.com> wrote:
>
> On Thu, 2008-04-24 at 10:27 -0600, Duane Wessels wrote:
> >
> > On Thu, 24 Apr 2008, Alex Rousskov wrote:
> >
> > > I do not think it is realistic to expect nearly linear scale (close to
> > > 100% and 200% increase in performance), especially for the first
> > > implementation.
> >
> > As you know, disk is usually the bottleneck. So I think your goals
> > and expectations should state whether disk caching is involved or
> > not. Assuming disk caching is involved, maybe even state what
> > storage type and a typical hit ratio.
>
> Very good point. I should have said that for this particular question
> let's consider the "pure" case of no caching (neither disk nor memory).

I believe another thing to consider is what if sysadmin configure
squid with a very long url_regex acl (and use it in, say,
http_access).

Perhaps heavy acls should also be excluded from the metric.

Regards,

-- 
Gonzalo A. Arana