From: "Nitin Gupta" <nitingupta910@gmail.com>
To: "Richard Purdie" <richard@openedhand.com>
Cc: linux-kernel@vger.kernel.org, linux-mm-cc@laptop.org,
"Andrew Morton" <akpm@linux-foundation.org>,
"Satyam Sharma" <satyam.sharma@gmail.com>,
"Andrey Panin" <pazke@donpac.ru>, "Bret Towe" <magnade@gmail.com>,
"Michael-Luke Jones" <mlj28@cam.ac.uk>
Subject: Re: [RFC] LZO de/compression support - take 4
Date: Fri, 25 May 2007 18:27:21 +0530 [thread overview]
Message-ID: <4cefeab80705250557w1baee0afn255e37436b6545a@mail.gmail.com> (raw)
In-Reply-To: <1180095000.5864.48.camel@localhost.localdomain>
[-- Attachment #1: Type: text/plain, Size: 1150 bytes --]
Hi Richard,
On 5/25/07, Richard Purdie <richard@openedhand.com> wrote:
> On Fri, 2007-05-25 at 17:15 +0530, Nitin Gupta wrote:
> > Richard, can you please provide perf. results for this patch also?
> > Also, can you please mail back latest version of your LZO patch? In
> > meantime, I will try to include benchmarking support to the
> > 'compress-test' module.
>
> This version is 15% slower at decompression and about equal on
> compression.
>
If you don't mind, can you please try patch attached now? I have now
also rolled back that cpu_to_le16() change as Satyam suggested. I see
no other reason for this perf. loss as I made no other change!
Also, can you please verify if you are comparing your _safe_ version
with this patch? This patch does not include unsafe version and the
safe one is simply called lzo1x_decompress().
> I am however still strongly of the opinion that we should just use the
> version in -mm (which is my latest version).
>
I love this cleaned-up patch just sooo much! :)
Anyhow, if we can spend just small time scanning through these ~500
LOC to find reasons for any perf. loss, we will gain a lot!
Thanks,
Nitin
[-- Attachment #2: patch_lzo_2.6.22-rc2_richard_test.bz2 --]
[-- Type: application/x-bzip2, Size: 4727 bytes --]
next prev parent reply other threads:[~2007-05-25 12:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-25 11:45 Nitin Gupta
2007-05-25 12:00 ` Michael-Luke Jones
2007-05-25 12:10 ` Richard Purdie
2007-05-25 12:37 ` Satyam Sharma
2007-05-25 13:38 ` Richard Purdie
2007-05-25 16:55 ` Daniel Hazelton
2007-05-25 18:45 ` Daniel Hazelton
2007-05-25 19:35 ` Satyam Sharma
2007-05-28 8:18 ` Daniel Hazelton
2007-05-28 8:37 ` Nitin Gupta
2007-05-28 8:43 ` Daniel Hazelton
2007-05-28 9:08 ` Nitin Gupta
2007-05-28 9:21 ` Daniel Hazelton
2007-05-28 9:46 ` Nitin Gupta
2007-05-28 9:58 ` Daniel Hazelton
2007-05-25 12:57 ` Nitin Gupta [this message]
2007-05-25 13:33 ` Richard Purdie
2007-05-26 10:28 ` Richard Purdie
2007-05-26 11:21 ` Nitin Gupta
2007-05-25 12:32 ` Satyam Sharma
2007-05-26 19:17 roland
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=4cefeab80705250557w1baee0afn255e37436b6545a@mail.gmail.com \
--to=nitingupta910@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm-cc@laptop.org \
--cc=magnade@gmail.com \
--cc=mlj28@cam.ac.uk \
--cc=pazke@donpac.ru \
--cc=richard@openedhand.com \
--cc=satyam.sharma@gmail.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®