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From Andrew Oliver <>
Subject Theory on recent Phoronix benchmark?
Date Tue, 05 Apr 2011 11:27:33 GMT

"When it comes to running the Apache web-server in these different
configurations, there is a 3% improvement when moving from the i686 to i686
PAE kernel and 2% on top of that when moving to the x86_64 Ubuntu. With the
newer Core i7 Sandy Bridge notebook there is a 6% boost in performance with
the PAE kernel, but the 64-bit performance strangely suffers a setback. In
this test and the rest, they are built from source for the respective

Anyone have any theory on why 64-bit was so much worse (suggest looking at
general article for context rather than solely the except above)?


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