SVN v1.6.5 (CollabNet) and SVN v1.7.0 (WANdisco) creates many threads, allocate all free memory and crashes/stops

Hello!

As I wrote a message about access rights problem before, now I will
write another message that will explain a reason for us to try to
update (unplanned update) to SVN v1.7.0.

We had used SVN v1.6.5 server (CollabNet build) on Windows 2003 x64
with 4GB RAM.

Yesterday SVN server is stopped unexpectedly.

I tried to restart it, but behaviour was:
immediately after start it created about 800-900 threads, and allocate
about 800-900mb of memory than stops (or crashes; but seems, stops
with error that there no resources -- I can's say exactly for all
cases, just I saw this error later with 1.7.0 in my debugging
experiments).

Due to some expiriments it was not possible to understand the reason
of such behaviour. The main idea is simple - some "floating" bug in
svnserve.exe, that cause to enter in such buggest state with
allocation infinity amount of resources (threads/memory).

So, we decide to update to SVN v1.7.0 (unplanned).
It started ok, and used about 5-24mb of memory, 3-34 threads, no more.

But after some unknown events it falled to the same behavior:
- stops with no enough resources
- after restart: immediately try to create about 800-900 threads and
allocate 800-900mb of memory, then stops.

I tried to investigate problems, using different cases, removing some
of repositories, setting them back, analyzing caches, tried to
reproduce this problem under debugger, but was not success.

I made a lot of experiments, but cannot understand the reason of the
problem, anyway, after a lot of hours of shamanism this issue is not
reproduce on our system again.

Someone seen something similar to this?

Any ideas? Just interesting.

-- 
С уважением,
 Andrey                          mailto:andrey_at_online-solutions.ru