Messages in this thread | | | Date | Fri, 21 Sep 2012 06:17:18 -0600 | From | Matthew Wilcox <> | Subject | Re: [RFC v4 Patch 0/4] fs/inode.c: optimization for inode lock usage |
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On Fri, Sep 21, 2012 at 05:31:02PM +0800, Guo Chao wrote: > This patchset optimizes several places which take the per inode spin lock. > They have not been fully tested yet, thus they are marked as RFC. > > I do limited tests after all patches applied: use two 'find' to traverse the > filesystems and touch all files in parallel. This runs for several days in a > virtual machine, no suspicious log appears.
Have you done any performance testing? Taking and releasing a lock which isn't contended is not particularly expensive.
-- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."
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