Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-04 Thread Robert Watson
On Wed, 3 May 2006, Chuck Swiger wrote: Is it still something that I should disable, and, if so, how in 6.x? You should test it for the workloads you have, but most of the time, HT isn't especially helpful. AMD64 CPUs come in dual-core format rather than HT-enabled. If you've seen HT or

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-04 Thread Jonathan Noack
Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: user pid %cpu %mem vsz rss tt state starttime command root 14 104.0 0.0 0 8 ?? RL

Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Marc G. Fournier
In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: user pid %cpu %mem vsz rss tt state starttime command root 14 104.0 0.0 0 8 ?? RL11:38AM 0:55.02

RE: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Zimmerman, Eric
In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: Is it still something that I should disable, and, if so, how in 6.x? Can you disable it in the BIOS or do you dual boot this machine?

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Chuck Swiger
Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: user pid %cpu %mem vsz rss tt state starttime command root 14 104.0 0.0 0 8 ?? RL

RE: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Marc G. Fournier
On Wed, 3 May 2006, Zimmerman, Eric wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: Is it still something that I should disable, and, if so, how in 6.x? Can you disable it in

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Wilko Bulte
On Wed, May 03, 2006 at 01:06:24PM -0300, Marc G. Fournier wrote.. On Wed, 3 May 2006, Zimmerman, Eric wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: Is it still something

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Marc G. Fournier
On Wed, 3 May 2006, Wilko Bulte wrote: On Wed, May 03, 2006 at 01:06:24PM -0300, Marc G. Fournier wrote.. On Wed, 3 May 2006, Zimmerman, Eric wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Vinny Abello
At 11:36 AM 5/3/2006, Chuck Swiger wrote: Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: user pid %cpu %mem vsz rss tt state starttime command

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Wilko Bulte
On Wed, May 03, 2006 at 02:12:45PM -0300, Marc G. Fournier wrote.. On Wed, 3 May 2006, Wilko Bulte wrote: On Wed, May 03, 2006 at 01:06:24PM -0300, Marc G. Fournier wrote.. On Wed, 3 May 2006, Zimmerman, Eric wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Spartak Radchenko
On Wed, May 03, 2006 at 11:42:18AM -0300, Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: I am not sure I understood your problem correctly... Do you want to

RE: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Larry Rosenman
Spartak Radchenko wrote: On Wed, May 03, 2006 at 11:42:18AM -0300, Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: I am not sure I understood your problem

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Kris Kennaway
On Wed, May 03, 2006 at 01:36:04PM -0400, Vinny Abello wrote: An Intel technical rep that gave a presentation on upcoming Intel VT technology in processors (Virtualization Technology) that I attended indicated that Hyperthreading was really designed to start getting programmers to program

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Spartak Radchenko
On Wed, May 03, 2006 at 01:44:02PM -0500, Larry Rosenman wrote: Spartak Radchenko wrote: On Wed, May 03, 2006 at 11:42:18AM -0300, Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Marc G. Fournier
On Wed, 3 May 2006, Spartak Radchenko wrote: On Wed, May 03, 2006 at 11:42:18AM -0300, Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it enabled, but my older i386 server that I just upgraded to 6.x does: I am not sure I understood

Re: Hyperthreading in 6.x ... still frowned upon?

2006-05-03 Thread Marc G. Fournier
On Wed, 3 May 2006, Spartak Radchenko wrote: On Wed, May 03, 2006 at 01:44:02PM -0500, Larry Rosenman wrote: Spartak Radchenko wrote: On Wed, May 03, 2006 at 11:42:18AM -0300, Marc G. Fournier wrote: In 4.x, it was a 'shut it off' sort of deal .. my new amd64 don't appear to have it