Messages in this thread | | | Date | Tue, 18 Jul 2006 16:46:51 -0400 | From | Chuck Ebbert <> | Subject | Re: CPU numbering & hyperthreading |
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In-Reply-To: <44BC4200.90308@cloakmail.com>
On Mon, 17 Jul 2006 22:05:52 -0400, Andrew Athan wrote: > > I have two highly CPU/memory/network intensive processes with 3-5 > threads each. I am using sched_setaffinity calls to make sure these two > processes never compete for the same physical CPU. Am I right to assume > that CPU #0 and #1 vs CPU #2 and #3 are separate physical CPUs on a > 2-CPU w/ hyperthreading box? > > I've spent some time looking, but I did not find documentation on > exactly how CPUs are numbered in a hyperthreaded box.
There's no fixed numbering.
If you want to know the die/core/thread layout, check out Documentation/cputopology.txt.
-- Chuck And did we tell you the name of the game, boy, we call it Riding the Gravy Train. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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