| Subject | Re: [PATCH 00/28] mm: preemptibility -v3 | From | Peter Zijlstra <> | Date | Mon, 07 Jun 2010 18:39:31 +0200 |
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On Mon, 2010-06-07 at 18:36 +0200, Andi Kleen wrote: > Peter Zijlstra <a.p.zijlstra@chello.nl> writes: > > > This patch-set makes part of the mm a lot more preemptible. It converts > > i_mmap_lock and anon_vma->lock to mutexes and makes mmu_gather fully > > preemptible. > > How about performance measurements? mutexes still behave quite > differently from spinlocks, especially under contention.
What's your favourite benchmark to stress i_mmap_mutex/anon_vma->lock?
a cache-hot kernel build didn't really show a difference..
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