From: Andi Kleen <andi@firstfloor.org>
To: Maxim Uvarov <muvarov@ru.mvista.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Performance Stats: Kernel patch
Date: 11 May 2007 01:31:44 +0200 [thread overview]
Message-ID: <p731whofe73.fsf@bingen.suse.de> (raw)
In-Reply-To: <20070510171947.19532.70784.stgit@localhost.localdomain>
Maxim Uvarov <muvarov@ru.mvista.com> writes:
>
> This data is useful for detecting hyperactivity
> patterns between processes.
You need a lot better rationale to slow down these important
fast paths. Particularly the syscall path is very hot.
Is this something that is really generally useful? The context
switch counters might be occasionally useful, but strace can
you just give the syscall count anyways. Still not sure
it really should go into the standard kernel. Perhaps just keep it
as a systemtap script?
-Andi
next prev parent reply other threads:[~2007-05-10 22:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-10 17:19 [PATCH] Performance Stats: Kernel patch Maxim Uvarov
2007-05-10 23:31 ` Andi Kleen [this message]
2007-05-11 16:55 ` Maxim Uvarov
-- strict thread matches above, loose matches on Subject: below --
2007-06-05 14:43 Maxim Uvarov
2007-06-06 6:38 ` Andrew Morton
2007-06-06 17:29 ` Jay Lan
2007-05-30 18:49 Maxim Uvarov
2007-06-04 19:19 ` Andrew Morton
2007-06-04 19:33 ` Jay Lan
2007-06-04 19:49 ` Jonathan Lim
2007-06-04 20:13 ` Jay Lan
2007-06-05 6:50 ` Balbir Singh
2007-05-22 17:19 Maxim Uvarov
2007-05-22 18:48 ` Dave Jones
2007-05-22 20:08 ` Andrew Morton
2007-05-11 17:13 Maxim Uvarov
2007-05-12 10:39 ` Andrea Righi
[not found] <4625FFCF.8040402@ru.mvista.com>
2007-04-20 4:36 ` [patch] " Andrew Morton
2007-04-25 10:59 ` Maxim Uvarov
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