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    SubjectRe: 2.5.36-mm1 dbench 512 profiles
    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 -

    The latest release is 2.5.36-mm1.
    rcu_ltimer and read_barrier_depends are pre-requisites for dcache_rcu.

    Dipankar Sarma <>
    Linux Technology Center, IBM Software Lab, Bangalore, India.
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