From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>, Hanna Linder <hannal@us.ibm.com>,
linux-kernel@vger.kernel.org, viro@math.psu.edu
Subject: Re: 2.5.36-mm1 dbench 512 profiles
Date: Thu, 19 Sep 2002 21:02:28 -0700 [thread overview]
Message-ID: <20020920040228.GF3530@holomorphy.com> (raw)
In-Reply-To: <20020920000815.GC3530@holomorphy.com>
On Thu, Sep 19, 2002 at 04:38:14PM -0700, Andrew Morton wrote:
>> It would be interesting to know the context switch rate
>> during this test, and to see what things look like with HZ=100.
On Thu, Sep 19, 2002 at 05:08:15PM -0700, William Lee Irwin III wrote:
> The context switch rate was 60 or 70 cs/sec. during the steady
> state of the test, and around 10K cs/sec for ramp-up and ramp-down.
> I've already prepared a kernel with a lowered HZ, but stopped briefly to
> debug a calibrate_delay() oops and chat with folks around the workplace.
Okay, figured that one out (c.f. x86_udelay_tsc thread). I'll grind out
another one in about 90-120 minutes or thereabouts with HZ == 100. I'm
going to take a wild guess param.h should have an #ifdef there for
NR_CPUS >= WLI_SAW_EXCESS_TIMER_INTS_HERE or something. It's probably
possible to figure out what the service time vs. arrival rate stuff says
but it's too easy to fix to be worth analyzing, and we don't exist to
process timer ticks anyway. Hrm, yet another cry for i386 subarches?
Hanna, did you have a particular dcache patch in mind? ISTR there were
several flavors. (I can of course sift through them myself as well.)
Cheers,
Bill
next prev parent reply other threads:[~2002-09-20 4:03 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-19 22:30 2.5.36-mm1 dbench 512 profiles William Lee Irwin III
2002-09-19 23:18 ` Hanna Linder
2002-09-19 23:38 ` Andrew Morton
2002-09-19 23:45 ` Hanna Linder
2002-09-20 0:08 ` William Lee Irwin III
2002-09-20 4:02 ` William Lee Irwin III [this message]
2002-09-20 7:59 ` Maneesh Soni
2002-09-20 8:06 ` William Lee Irwin III
2002-09-20 12:03 ` William Lee Irwin III
2002-09-20 18:51 ` Hanna Linder
2002-09-20 20:32 ` Hanna Linder
2002-09-20 20:54 ` Dipankar Sarma
2002-09-20 20:39 ` William Lee Irwin III
2002-09-20 21:30 ` Martin J. Bligh
2002-09-20 23:11 ` William Lee Irwin III
2002-09-20 23:22 ` Martin J. Bligh
2002-09-21 7:52 ` William Lee Irwin III
2002-09-20 14:34 ` Dave Hansen
2002-09-20 16:07 ` Martin J. Bligh
2002-09-20 17:48 ` Dipankar Sarma
2002-09-20 17:40 ` Dipankar Sarma
2002-09-20 20:28 ` Dipankar Sarma
2002-09-20 5:14 ` William Lee Irwin III
2002-09-20 6:59 ` William Lee Irwin III
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020920040228.GF3530@holomorphy.com \
--to=wli@holomorphy.com \
--cc=akpm@digeo.com \
--cc=hannal@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=viro@math.psu.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).