From: Christoph Lameter <clameter@sgi.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: ZVC: Increase threshold for larger processor configurationss
Date: Fri, 30 Jun 2006 10:15:19 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0606301010200.2955@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20060629115705.ede2c63c.akpm@osdl.org>
On Thu, 29 Jun 2006, Andrew Morton wrote:
> A lot of the counters only ever count in one direction! So we could even
> skew them by an entire STAT_THRESHOLD.
I just tested both approaches separately. If I leave the STAT_THRESHOLD at
32 and just add the STAT_THRESHOLD / 2 trick we can scale cleanly up to
160p in the synthetic test.
I have a bad feeling though for 512p 1024p and 4096p with the static
approach with STAT_THRESHOLD /2 but it will take some time to get tests
done on those.
I think the best right now is to just take the dynamic threshold patch. I
expect that to do just fine at the higher numbers. If we have more trouble
at 1024p then maybe try STAT_THRESHOLD/2 before going to
aggregate counter consolidation.
next prev parent reply other threads:[~2006-06-30 17:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-28 17:41 Christoph Lameter
2006-06-28 22:49 ` Andrew Morton
2006-06-29 18:22 ` Christoph Lameter
2006-06-29 18:57 ` Andrew Morton
2006-06-30 17:15 ` Christoph Lameter [this message]
2006-06-30 6:14 ` Christoph Lameter
2006-06-30 6:15 ` Christoph Lameter
2006-06-30 6:31 ` Andrew Morton
2006-06-30 7:17 ` Christoph Lameter
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