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Posted to bugs@httpd.apache.org by bu...@apache.org on 2010/03/07 14:11:02 UTC
DO NOT REPLY [Bug 48130] DAV operations on large filesets consume
all the OS memory
https://issues.apache.org/bugzilla/show_bug.cgi?id=48130
Stefan Fritsch <sf...@sfritsch.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|2.2.14 |2.3-HEAD
OS/Version|AIX |All
--- Comment #2 from Stefan Fritsch <sf...@sfritsch.de> 2010-03-07 13:11:00 UTC ---
Memory management in mod_dav is broken. A PROPFIND of a dir with 10000 files
needs around 140MB of memory on my system.
Some initiative to overhaul pool usage was described here:
http://mail-archives.apache.org/mod_mbox/httpd-dev/200305.mbox/<86smqzgcuf.fsf%40kepler.ch.collab.net>
Unfortunately this was never completed.
Probably the pool guidelines from subversion should be used:
http://subversion.apache.org/docs/community-guide/conventions.html#apr-pools
This would mean that most mod_dav functions would need to tak a scratch pool
and a result pool as parameters. And dav_push_error needs some magic to ensure
correct lifetime of the error stack.
In addition there is the problem that the response is streamed to the client
while locks are held (PR 36636).
This looks like a large amount of work. Probably a project for Apache 3.0 and
not for 2.4.
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