From: Jack Steiner <steiner@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: Timer updates revision 7 (asm sets predicates/various fixes)
Date: Fri, 30 Jul 2004 14:45:47 +0000 [thread overview]
Message-ID: <20040730144547.GB2621@sgi.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0407292044500.3633@schroedinger.engr.sgi.com>
> New Code:
>
> singsing:/usr/src/noship-tests # ./dmt
> gettimeofday cycles: 3312 212 213 213 212 212 213 213 213 213
> clock_gettime(REAL) cycles: 2880 224 210 210 210 210 210 210 210 210
> clock_gettime(MONO) cycles: 285 233 226 219 219 219 219 219 219 219
>
> singsing:/usr/src/noship-tests # ./todscale
> CPUS WALL WALL/CPUS
> 1 0.187 0.187
> 2 0.746 0.373
The new code certainly is faster, but does it scale at high cpu counts?
The numbers above indicate a substantial slowdown going from 1 to 2
cpus. What happens at higher cpu counts.
--
Thanks
Jack Steiner (steiner@sgi.com) 651-683-5302
Principal Engineer SGI - Silicon Graphics, Inc.
next prev parent reply other threads:[~2004-07-30 14:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-30 3:52 Timer updates revision 7 (asm sets predicates/various fixes) Christoph Lameter
2004-07-30 4:23 ` David Mosberger
2004-07-30 14:45 ` Jack Steiner [this message]
2004-07-30 15:30 ` Christoph Lameter
2004-07-30 15:34 ` Christoph Lameter
2004-08-02 9:32 ` David Mosberger
2004-08-02 9:36 ` David Mosberger
2004-08-03 2:33 ` christoph
2004-08-03 18:06 ` David Mosberger
2004-08-03 21:06 ` Christoph Lameter
2004-08-04 8:31 ` David Mosberger
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