detecting hyperthreading in linux 2.4.19

From: Jason Lunz (lunz@falooley.org)
Date: Thu Jan 09 2003 - 15:02:33 EST

Is there a way for a userspace program running on linux 2.4.19 to tell
the difference between a single hyperthreaded xeon P4 with HT enabled
and a dual hyperthreaded xeon P4 with HT disabled? The /proc/cpuinfos
for the two cases are indistinguishable.

Jason

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