Messages in this thread | | | Date | Sat, 21 Sep 2002 01:58:58 +0530 | From | Dipankar Sarma <> | Subject | Re: 2.5.36-mm1 dbench 512 profiles |
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On Fri, Sep 20, 2002 at 11:10:20PM +0530, Dipankar Sarma wrote: > > > > In any case, we all know often acquired global locks are a bad idea on > > a 32-way, and should be avoided like the plague. I just wish we had a > > dcache solution that didn't even need locks as much... :) > > You have one - dcache_rcu. It reduces the dcache_lock acquisition > by about 65% over fastwalk.
I should clarify, this was with a webserver benchmark.
For those who want to use them, Maneesh's dcache_rcu-12 patch and my RCU "performance" infrastructure patches are in -
http://sourceforge.net/project/showfiles.php?group_id=8875&release_id=111743
The latest release is 2.5.36-mm1. rcu_ltimer and read_barrier_depends are pre-requisites for dcache_rcu.
Thanks -- Dipankar Sarma <dipankar@in.ibm.com> http://lse.sourceforge.net Linux Technology Center, IBM Software Lab, Bangalore, India. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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