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    Subject[patch] pagecache SMP-scalability patch [was: spinlock usage]

    Anton,

    if you are doing SMP-intensive dbench runs, then check out the SMP
    pagecache-scalability patch (against 2.4.2-ac20):

    http://people.redhat.com/~mingo/smp-pagecache-patches/pagecache-2.4.2-H1

    this patch splits up the main scalability offender in non-RAM-limited
    dbench runs, which is pagecache_lock. The patch was designed and written
    by David Miller, and is being forward ported / maintained by me. (The new
    pagecache lock design is similar to TCP's hashed spinlocks, which proved
    to scale excellently.)

    (about lstat(): IMO lstat() should not call into the lowlevel FS code.)

    Ingo

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