Re: [PATCH 0/3 v3] dcache: make it more scalable on large system

[Andi Kleen]

On Wed, May 29, 2013 at 04:43:23PM -0400, J. Bruce Fields wrote:
> On Wed, May 29, 2013 at 10:37:00PM +0200, Andi Kleen wrote:
> > > As Dave said before, is the last path component sufficient?  Or how
> > > about an inode number?
> > 
> > Neither works, the profiler needs to find the file and read it.
> > 
> > inode searching would be incredible expensive,
> 
> How fast does it need to be?  Actually analyzing the profile is
> something you only do once after everything's over, right?

"perf top" does it live.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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