> How complicated are Tom's test scripts? His immediate reply was that I
> should retest with Fedora, to rule out any gentoo bugs.

We've done some testing on other Linux.    Linking in pthreads reduced CSes by 
< 15%, which was no appreciable impact on real performance.

Gavin/Neil's full futex patch was of greater benefit; while it did not reduce 
CSes very much (25%) somehow the real performance benefit was greater.

Josh Berkus
Aglio Database Solutions
San Francisco

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