Re: [squid-users] relation between http req/sec and no of simulatneous accesses

but if we look from a practical point of view ..assuming no significant
loss in service times there must be a certain max client load factor
which can be served reasonably well by a 70/sec box

anyone knows the figure ... especially if we spk abt squid as an
accelerator front ending abt 20 backend servers connected to it on a
line with abt 50 ms round trip time between them and the squid box
clients connect to squid vi dialup

TIA
khiz
--- Robert Collins <robert.collins@itdomain.com.au> wrote:
> ----- Original Message -----
> From: "Steve Snyder" <swsnyder@home.com>
> To: "khiz code" <khizcode@yahoo.com>; <squid-users@squid-cache.org>
> Sent: Friday, October 12, 2001 3:30 PM
> Subject: Re: [squid-users] relation between http req/sec and no of
> simulatneous accesses
>
>
> > On Friday 12 October 2001 12:16 am, khiz code wrote:
> > > Hi all
> > > ive been stress testing my squid boxes using ummm .. wget
> (mutilple
> > > copies) and web stress tools
> > > my cache could go upto abt 70 req/sec
> > > what i would like to understand is that 70 req/sec corresponds to
> abt
> > > how many simultaneous client connections ..i.e how many clients
> can
> the
> > > cache serve at any point of time
> >
> > I don't have a specific answer to your question, but I can offer
> that
> I've
> > seen plenty of pages with 30+ objects in them. If only 2 users
> requested
> > pages like this simultaneously, your 70 request are just about
> consumed.
>
> Browsers will use a maximum of 2 http connections to a single cache
> at
> once (for http/1.1 browsers that is, http/1.0 are allowed more, but
> most
> 1.0 browsers only use 4 connections.
>
> So when a use hits a page with 30 objects, they get (assuming the
> objects are equal in size) 15 on one connection and 15 on another.
> The
> entire object transfer rate would need to be 1/15th of a second, or
> approx 70ms for the requests per second count to be pushed up to
> 70/seq
> by two users.
>
> If you look at your stats page, I'm sure you'll see that misses take
> a
> little more than 70ms to satisfy :].
>
> Rob
>

__________________________________________________
Do You Yahoo!?
Make a great connection at Yahoo! Personals.
http://personals.yahoo.com
Received on Fri Oct 12 2001 - 01:18:27 MDT