Re: memory + CPUs + lets tango.

From: tom minchin <tom@dont-contact.us>
Date: Thu, 3 Sep 1998 18:48:06 +1000

On Thu, Sep 03, 1998 at 06:34:58PM +1000, Andrew Hall wrote:
> Hello all,
>
> Need some help and I'm a little embarrased that I don't know this, but I've just upgraded one of my squid machines (linux 2.0.35 + squid 1.2b24p1) from a single CPU to dual PII300 and upgraded memory from 64MB to 1GB. I have recompiled kernel and squid for SMP enabled but:
>
> 1. How do I know if my machine is now using both processors? Does Squid make use of them? How much performance increase (if any) should I expect on what was a fairly heavily utilised machine?

From reading the Linux kernel list and Linus' comments the SMP in 2.0.x is a
pretty mimimal gain. Linux 2.2 (or 2.1.x if you dare) has much better SMP
wins.

>
> 2. Squid doesn't seem to find the rest of my memory (nor does the OS for that matter). I thought a recompile should have fixed this? How do I get my machine to find all my RAM?
>

You need an append line in your lilo.conf:

        append="mem=1024M"

Autodetection of RAM (although probably not to 1G) is also slated for 2.2.

tom@interact.net.au
Received on Thu Sep 03 1998 - 01:49:08 MDT

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