Messages in this thread | | | Date | Wed, 20 Feb 2013 11:40:43 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/4] rwsem: Implement writer lock-stealing |
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* Alex Shi <alex.shi@intel.com> wrote:
> > Alex, could you go through my patch and see if there is > > anything you find objectionable ? (if not about the details, > > at least about the general approach of enabling writer lock > > stealing on the fast path) > > I did a quick review on the patchset and tested the patches > 1~3, and 1~3 plus 4th, my patch plus 4th. > > The patch looks much complicated, and also goes writing slow > path to steal locking. My patch looks quite straight and > simple. > > This 1~3 patch has very very similar performance effect with > mine. > > The highlight patch is the 4th, seems it can provide about ~2% > aim7 performance gain(base on both of mine or patches 1~3) on > my 4S NHM EX machine.
That speedup would be nice to have.
Thanks,
Ingo
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