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Hyperthreading slows processes? - Mailing list pgsql-performance

From Craig A. James
Subject Hyperthreading slows processes?
Date
Msg-id 4380EEA2.4010002@modgraph-usa.com
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In response to Re: Storage/Performance and splitting a table  (Michael Stone <mstone+postgres@mathom.us>)
Responses Re: Hyperthreading slows processes?
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This article on ZDNet claims that hyperthreading can *hurt* performance, due to contention in the L1/L2 cache by a
secondprocess: 

   http://news.zdnet.co.uk/0,39020330,39237341,00.htm

Has anyone tested this on Postgres yet?  (And based on a recent somewhat caustic thread about performance on this
forum,I'm going to avoid speculation, and let those who actually *know* answer! ;-) 

Craig

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