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Re: svn 1.6x and apache compression - mod_deflate

From: Mark Phippard <markphip_at_gmail.com>
Date: Wed, 10 Mar 2010 12:31:19 -0500

Do a checkout or command using a SVN client that does not have deflate
support. For example, the TortoiseSVN 1.5.x clients. As soon as you
do this, your server will probably crash.

When the SVN clients have deflate support it all works great. The bug
happens when a client without support hits the server. This could
also include command line tools like wget.


On Wed, Mar 10, 2010 at 11:58 AM, Leszek Szarlej
<leszek.szarlej_at_gmail.com> wrote:
> Hi I am sharing with you my results of running with mod_deflate and svn
> 1.9.9 for ~13 hours. I hope attachments works here.. see attached file
> The load of the server decreased but there were also other changes applied
> in the same time like LDAP cache or ServerTokens PROD
> To this time mod_deflate works very efficiently without notificable
> burden of server.
> Regards
> Leszek
> On 9 March 2010 17:33, Stefan Sperling <stsp_at_elego.de> wrote:
>> On Tue, Mar 09, 2010 at 05:10:11PM +0100, Leszek Szarlej wrote:
>> > Thanks for the info.
>> > >See http://svn.haxx.se/dev/archive-2009-08/0274.shtml
>> > In mentioned example apache runs on worker mpm. I've sent a message to
>> > this
>> > group few days ago about users experience with svn and worker mpm. I
>> > didn't
>> > get any answer.
>> Can you provide a link to this message so it's easy to find it and to
>> reply to it?
>> The archives are at
>> http://mail-archives.apache.org/mod_mbox/subversion-dev/
>> > It concerns me if svn is thread-safe and if the said memory
>> > problem would appear on prefork mpm. I will be doing some tests this
>> > week.
>> Thanks, tests always help and give insight.
>> Note that the problem is not specific to svn. If I understand correctly
>> it's a problem with mod_deflate. It's possible to work around it in
>> Subversion, but a proper fix would have to be made within mod_deflate.
>> I don't know what the status of this bug is with the httpd team,
>> whether it's known there, or if a fix is in sight.
>> The fix seems to be important to you, so maybe you could ask them?
>> Thanks,
>> Stefan

Mark Phippard
Received on 2010-03-10 18:31:52 CET

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