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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/