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nicke
n00b
Joined: 10 Jun 2002
Posts: 6
Location: Stockholm
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 Posted: Mon Jun 10, 2002 6:32 pm Post subject: Hyperthreading on my 2 XEON prestonia CPU's |
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Hi all!
I am wondering... Once when I installed Gentoo, my prestonia CPU's were recognized and top showed CPU0, 1, 2, 3. Now after my reinstall, my CPU's are only recognized as ordinary ones.. CPU 0 and 1. What do I have to do to enable this feature in the kernel? Any input on this matter will be much appreciated.
Many fanks. =D
nicke |
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nicke
n00b
Joined: 10 Jun 2002
Posts: 6
Location: Stockholm
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| Posted: Sat Jun 15, 2002 12:35 am Post subject: |
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So, i've come to the conclusion that i have to pass a kernel message in my boot-loader. What i do not yet know is the syntax! I would be greatful for any input!
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cheers,
nicke |
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delta407
Bodhisattva
Joined: 23 Apr 2002
Posts: 2876
Location: Chicago, IL
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| Posted: Sat Jun 15, 2002 3:03 am Post subject: |
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| You can pass parameters to the kernel at boot by editing your /boot/grub/menu.lst file. Just mount your /boot partition, open menu.lst, and look for the line that says "root=/dev/hda3" (or similar). You can add parameters on that line. |
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nicke
n00b
Joined: 10 Jun 2002
Posts: 6
Location: Stockholm
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| Posted: Sat Jun 15, 2002 8:07 pm Post subject: |
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I know all this, but thanks for pointing that out anyway!
After the kernel command that has allready been given I add my command for enabling hyperthreading, which is: acpismp=force.
This command however seems to be ineffective.
Thus, my HT is still not enabled.
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cheers,
nicke |
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Forge
Tux's lil' helper
Joined: 20 Jun 2002
Posts: 125
Location: KOP, PA, USA
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| Posted: Thu Jun 20, 2002 4:13 pm Post subject: |
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| You may want to try a stock kernel. HT might be broken in the Gentoo-specific ones. |
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rSYN
n00b
Joined: 14 Jun 2002
Posts: 7
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| Posted: Fri Jun 21, 2002 4:32 pm Post subject: |
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| I'm trying to do this also. I can't get anywhere. My kernel shows only 2 cpus. |
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delta407
Bodhisattva
Joined: 23 Apr 2002
Posts: 2876
Location: Chicago, IL
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| Posted: Fri Jun 21, 2002 4:40 pm Post subject: |
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| Forge wrote: | | HT might be broken in the Gentoo-specific ones. |
While that may be the case, most of the reports of working hyperthreading are with the 2.4.19 series, so try 'em anyway. |
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Sivar
Apprentice
Joined: 25 May 2002
Posts: 266
Location: USA
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| Posted: Sat Jun 22, 2002 8:06 pm Post subject: |
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You might reconsider using HT at all. It is of dubious value and actually slows down some server operations. Not sure about using it as a desktop system. Most people that use Gentoo use it as a desktop as it isn't really quite ready for a server. You might look at SuSE, Redhat (cringe), or Debian for that.
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The greatest deeds are still undone, the greatest songs are still unsung... |
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Kernel & Hardware
