Re: memory + CPUs + lets tango.

From: Chris Wedgwood <>
Date: Thu, 3 Sep 1998 20:54:51 +1200

On Thu, Sep 03, 1998 at 06:48:06PM +1000, tom minchin wrote:

> 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.

2.2.x isn't out yet, and 2.1.x on a production machine goes to pieces
under high load for me (although, I think this may have been fixed).

The networking code still has much work to be done to make that scale
better under SMP, so if your network IO bound, 2.2.x still won't help

Right now, 2.1.x/2.2.x networking stack is slightly slower under SMP
than UP, but I don't this this will necessarily impact on squid.

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

The 2.1.x detection code (which has been in for over a year)
certainly works up to 3GB, and in theory should work even higher (not

Received on Thu Sep 03 1998 - 02:00:46 MDT

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