From: Dan Kegel <dank@kegel.com>
To: Larry McVoy <lm@bitmover.com>
Cc: GCC Mailing List <gcc@gcc.gnu.org>, linux-kernel@vger.kernel.org
Subject: Re: LMbench as gcc performance regression test?
Date: Sun, 31 Aug 2003 07:28:58 -0700 [thread overview]
Message-ID: <3F52062A.4020701@kegel.com> (raw)
In-Reply-To: <20030831140037.GA16620@work.bitmover.com>
Larry McVoy wrote:
> On Sun, Aug 31, 2003 at 12:21:37AM -0700, Dan Kegel wrote:
>
>>(There seems to be large variations in successive runs of LMBench
>>when I try it, so it may take me a bit of work to get repeatable
>>results.)
>
>
> Other than the context switch part or anything based on it, that shouldn't
> be true, it should be very stable.
>
> I'm pretty convinced that the variations are due to different pages being
> allocated and the result cache contention makes things bounce.
Or an idiot running the benchmark. We really do have to rule that out first.
- Dan
--
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045
next prev parent reply other threads:[~2003-08-31 14:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-31 7:21 LMbench as gcc performance regression test? Dan Kegel
2003-08-31 14:00 ` Larry McVoy
2003-08-31 14:28 ` Dan Kegel [this message]
[not found] ` <3F520773.1070907@kegel.com>
[not found] ` <20030831145956.GE23783@work.bitmover.com>
2003-08-31 22:53 ` Dan Kegel
2003-08-31 15:24 ` Daniel Jacobowitz
2003-08-31 15:59 ` Dan Kegel
2003-08-31 16:18 ` Larry McVoy
2003-08-31 17:03 ` Martin J. Bligh
-- strict thread matches above, loose matches on Subject: below --
2003-08-31 16:57 rwhron
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