Re: [PATCH 5/6] perf_counter: kerneltop: mmap_pages argument
From: Ingo Molnar
Date: Wed Mar 25 2009 - 08:18:43 EST
* Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:
> provide a knob to set the number of mmap data pages.
> + " -m pages --mmap_pages=<pages> # number of mmap data pages\n"
Btw., we really want this to be auto-tuning to a large degree. If
the kernel observes missed events, it should create a
PERF_EVENT_OVERFLOW==0x3 record, with the number of missed events -
or something like that.
Ingo
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