Re: [SLE] does P4 hyper threading need k_smp ??

* Ivan Sergio Borgonovo (Tue, Nov 11, 2003 at 11:43:22AM +0100)

On Tue, 11 Nov 2003 11:51:37 +0100 "sebastien" wrote:

...

Hi, I just did a fresh SuSE 9.0 install on my new P4 hyper threading. Yast automatically installed the kernel k_smp, but with this kernel, usb and sound did not work at all. So I decided to install the k_deflt, and with this kernel, everything work like a charm.

...

So, is k_smp needed to use hyper threading ?

yes!

ivan@caronte:~> uname -a Linux caronte 2.4.23-pre6 #27 SMP Mon Oct 6 00:51:13 CEST 2003 i686 unknown

11:55am up 36 days, 11:47, 1 user, load average: 0.03, 0.01, 0.00 65 processes: 64 sleeping, 1 running, 0 zombie, 0 stopped CPU0 states: 0.0% user, 0.0% system, 0.0% nice, 100.0% idle CPU1 states: 0.0% user, 0.1% system, 0.0% nice, 99.4% idle

I didn't try USB, sound and stuff cos it is a server... audio was not installed, USB modules are loaded but I don't know if they work. My box has a 875P chipset, I still haven't checked if I'm using all the features it provides...

I've used HT on a couple of dual CPU boxes (so now 4 cpu boxes). Yes, you need an SMP kernel. Yes it works Yes, sounds works, as does USB and firewire. I noticed osme odd things with multi window accelrated OpenGL though. with the 9.0 release these did not reappear

I don't know if SUSE did anything special to its kernel about HT, but support is pretty new and improving. A bit newer kernel may mean apreciable improvement in HT performances.

I'm going to update soon cos I'm curious to see if nforce2 support is improved too. I've some trouble with IDE speed :(

Sorry, no idea about nforce

I'll wait to solve them when I'll have my 9.0 box.

Kind regards, -- Gerhard den Hollander Phone :+31-10.280.1515 ICT manager Direct:+31-10.280.1539 Jason Geosystems BV Fax :+31-10.280.1511 gdenhollander@Fugro-Jason.com POBox 1573 visit us at http://www.Fugro-Jason.com 3000 BN Rotterdam JASON.......#1 in Reservoir Characterization The Netherlands This e-mail and any attachment is/are intended solely for the named addressee(s) and may contain information that is confidential and privileged.