Linux support for SMT (HyperThreading)

bscott at ntisys.com bscott at ntisys.com
Fri Aug 30 17:19:10 EDT 2002


  Someone at Wednesday's GNHLUG meeting (alas, I forget who) mentioned to me
that Intel has introduced a feature on the P4 CPUs they call
"HyperThreading", and has been called (more generically) symmetric
multi-threading (by analogy with SMP).  Basically, it gives you more than
one "logical" processor per "physical" processor by doing context-switching
in the hardware when the CPU would be otherwise idle.

  Linux now has explicit support for this, in prototype form, as detailed
here:

	http://kerneltrap.org/node.php?id=391

  Just FYI.  :)

-- 
Ben Scott <bscott at ntisys.com>
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