From: Andi Kleen <andi@firstfloor.org>
To: George Spelvin <linux@horizon.com>
Cc: andi@firstfloor.org, linux-kernel@vger.kernel.org
Subject: Re: How to measure enable_kernel_fpu overhead?
Date: Sun, 5 Jun 2011 02:31:18 +0200 [thread overview]
Message-ID: <20110605003118.GP27166@one.firstfloor.org> (raw)
In-Reply-To: <20110605002323.16365.qmail@science.horizon.com>
On Sat, Jun 04, 2011 at 08:23:23PM -0400, George Spelvin wrote:
> > This seems to clever for its own good. Even if you come up with some
> > number on one CPU it could be completely different on another.
> > I would suggest KISS.
>
> I don't understand. Do you mean different CPUs of the same SMP system?
> That would be really bad...
Different CPU models. This years CPUs does this and next years that.
> on my systems, it would be easy. But that's so obviously not useful
> that I didn't bother to mention it.
AFAIK you cannot merge anyways as anonymous, so it's moot.
-Andi
next prev parent reply other threads:[~2011-06-05 0:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-03 17:26 How to measure enable_kernel_fpu overhead? George Spelvin
2011-06-04 20:17 ` Andi Kleen
2011-06-05 0:23 ` George Spelvin
2011-06-05 0:31 ` Andi Kleen [this message]
2011-06-05 1:50 ` George Spelvin
[not found] <BANLkTimyCodUvBUEVUJcb8TALF5x3H3UEQ@mail.gmail.com>
2011-06-05 15:51 ` George Spelvin
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