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Re: stress.pl error with ra_dav+fsfs

From: Philip Martin <philip_at_codematters.co.uk>
Date: 2005-07-05 18:06:15 CEST

Jani Averbach <jaa@jaa.iki.fi> writes:

> So it looks like that here only SDBM works as activity backend.

As far as I know SDBM is very simple and doesn't do any locking, so
the apr-util wrappers have to do it. BDB, and I think GDBM, provide
their own locking.

> With
> anything else, first activity error pops up during the 10-20 first
> commit. However, this very same system (chroot) compiles and runs
> nightly regression tests, so it can't be completely nuts.

The Subversion regression tests don't do any concurrent database
access, so they won't trigger this problem.

> Where should I look next, to apr-util, these databases, or mod_dav_svn?
> Used apr-util is 0.9.6.

The BDB source includes extensive regression tests, you could try
running those.

It looks like the locking provided by BDB/GDBM doesn't work on your
system--so it's a kernel/filesystem/libc/compiler problem, but I don't
know which :)

Philip Martin
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Received on Tue Jul 5 18:57:17 2005

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