Messages in this thread | | | Date | Wed, 21 Mar 2001 13:11:35 +0100 (CET) | From | Ingo Molnar <> | Subject | [patch] pagecache SMP-scalability patch [was: spinlock usage] |
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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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