Gentoo Archives: gentoo-dev

From: Denis Shcherbakov <deniss@×××××××××.EDU>
To: gentoo-dev@g.o
Subject: [gentoo-dev] SMP kernel halts system - hyperthreading??
Date: Thu, 19 Dec 2002 03:49:39
Message-Id: Pine.GSO.4.44.0212182220420.5775-100000@yuma.Princeton.EDU
In Reply to: [gentoo-dev] XFree halts system with some C++ codes running (in particular, Diffpack) on SMP kernel 2.4.19-gentoo-r7 by Werner Van Belle
1 Dear gentoo-dev,
2
3 If some of you recall, I wrote to the list about a system halt resulting
4 from running C++ codes and it possibly having to do with nVidia graphics
5 or XFree 4.2.1.
6
7 Well, the problem persists in text mode also. It happens when 3 or more
8 CPU-intensive processes run simultaneously on the machine. I have an SMP
9 kernel (2.4.19-gentoo-r7) with 2 Intel Xeon 2.2-GHz processors equipped
10 with hyperthreading technology.
11
12 I have 4 processors initialized at boot time, and 4 processors show up in
13 "top". This is probably because of hyperthreading, as otherwise there
14 should be only two.
15
16 How do I turn off hyperthreading? Do you think hyperthreading is what's
17 breaking my system and it could be more stable without hyperthreading?
18 Can a certain process be confined only to a certain processor?
19
20 Thanks for any help!
21 Denis
22
23
24 --
25 gentoo-dev@g.o mailing list

Replies

Subject Author
RE: [gentoo-dev] SMP kernel halts system - hyperthreading?? Riyad Kalla <rsk@×××××××××.edu>