Messages in this thread |  | | Date | Tue, 17 Sep 2002 13:55:49 -0700 | From | Andrew Morton <> | Subject | Re: TLB flush counters gone in 2.5.35-bk? |
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Roberto Nibali wrote: > > Hello, > > I was just browsing over the latest bk tree when I saw the following change: > > ... > - unsigned long flushes;/* stats: count avoided flushes */ > - unsigned long avoided_flushes;
That was some statistical/debug code to evaluate how useful that particular optimisation was being. Answer: it saves 30-35% of the global TLB invalidations coming out of there.
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