From: "Martin J. Bligh" <mbligh@aracnet.com>
To: William Lee Irwin III <wli@holomorphy.com>,
"Bond, Andrew" <Andrew.Bond@hp.com>
Cc: Dave Hansen <haveblue@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: TPC-C benchmark used standard RH kernel
Date: Fri, 20 Sep 2002 15:07:34 -0700 [thread overview]
Message-ID: <81250000.1032559653@flay> (raw)
In-Reply-To: <20020920205653.GM3530@holomorphy.com>
>> This isn't as recent as I would like, but it will give you an idea.
>> Top 75 from readprofile. This run was not using bigpages though.
>> Andy
>
>> 00000000 total 7872 0.0066
>> c0105400 default_idle 1367 21.3594
>> c012ea20 find_vma_prev 462 2.2212
>> c0142840 create_bounce 378 1.1250
>> c0142540 bounce_end_io_read 332 0.9881
>> c0197740 __make_request 256 0.1290
>> c012af20 zap_page_range 231 0.1739
>> c012e9a0 find_vma 214 1.6719
>> c012e780 avl_rebalance 160 0.4762
>
> Looks like you're doing a lot of mmapping or faulting requiring VMA
> lookups, or the number of VMA's associated with a task makes the
> various VMA manipulations extremely expensive.
>
> Can you dump /proc/pid/maps on some of these processes?
Isn't that the magic Oracle 32Kb mmap hack at work here, in order
to get a >2Gb SGA?
M.
next prev parent reply other threads:[~2002-09-20 22:06 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-19 19:27 TPC-C benchmark used standard RH kernel Bond, Andrew
2002-09-19 20:40 ` Dave Hansen
2002-09-20 17:20 ` Mike Anderson
2002-09-20 17:31 ` Jens Axboe
2002-09-20 18:05 ` Mike Anderson
2002-09-20 20:56 ` William Lee Irwin III
2002-09-20 22:07 ` Martin J. Bligh [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-09-20 17:43 Bond, Andrew
2002-09-19 21:18 Bond, Andrew
2002-09-19 21:48 ` Dave Hansen
2002-09-19 19:15 Bond, Andrew
2002-09-19 17:15 Bond, Andrew
2002-09-19 18:14 ` Dave Hansen
2002-09-19 19:05 ` Martin J. Bligh
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=81250000.1032559653@flay \
--to=mbligh@aracnet.com \
--cc=Andrew.Bond@hp.com \
--cc=haveblue@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=wli@holomorphy.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.