HTT and SMP question

Vivek Khera vivek at khera.org
Tue Apr 20 06:54:23 PDT 2004


On Apr 20, 2004, at 4:53 AM, Rumen Telbizov wrote:

> Would you point to a case where machdep.hlt_logical_cpus=0 does
> show better performance results? httpd ?
>

There's a big thread over in Postgres lists about HTT and Xeon 
processors.  The consensus is that HTT is bad for postgres, and Xeon's 
cache handling is also bad for certain Xeon's.  The cache handling 
stuff hasn't been totally understood yet, though.

Vivek Khera, Ph.D.
+1-301-869-4449 x806

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