Re: [squid-users] Squid versus Microsoft ISA

On Fri, 5 Dec 2003, Merton Campbell Crockett wrote:

> The only time that I've seen an SMP performance penalty is when you have
> more than 5 or 6 processors. Up through 4 procesors there is a 1:1
> performance improvement. This is what has been experienced with BSD/OS. A
> few other operating systems that we've tried didn't fair as well.

There is a 1:1 performance improvement while running a SMP kernel yes. But
for a UP system there is a noticeable performance gain from running a UP
kernel, especially on applications using a lot of system time.

For applications mainly doing maths on the CPU the difference of a SMP vs
UP kernel is negliable. But Squid is not such application.

Regards
Henrik
Received on Fri Dec 05 2003 - 15:05:37 MST