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Re: 1.3.1 tarballs up for testing/signing (Again)

From: Branko Čibej <brane_at_xbc.nu>
Date: 2006-03-31 19:27:04 CEST

eg wrote:
> Branko Čibej wrote:
>
>>> Well, I can't sign the 1.3.1 Windows ZIP file. Testing on my
>>> 2xAthlon MP box, 5 combinations pass, but I see random deadlocks
>>> during the svnserve + bdb.tests. I haven't been able to determine
>>> what's going on, though. Both svnserve.exe and svn.exe seem to be
>>> idle, not waiting for anybody ...
>>>
>>> Yes, I am running an antivirus scanner on my box, but I disabled it
>>> for this test, and nothing changed.
>>>
>>> Most weird.
>> Heh. I may not be smart enough to figure it out, but persistence pays
>> off -- if the tests fail, repeat them until they pass. And here's
>> proof that Windows is nothing but a heisenbug. :)
>>
>> Tested the .zip flle 6 ways on Windows (httpd-2.0.54, neon-0.25.5),
>> all tests pass.
>>
>
> Does the BDB code have any multi-threaded code?
> It sure screams out as a synchronization bug in the software... these
> always show up faster in multi-processor systems... and they may not
> be 100% repeatable in a short test sequence.
Yes, but which software? Svnserve on WIndows is multi-threaded, the
threads don't interact except within BDB itself. If BDB has a
synchronisaton problem, the best we can do is upgrade to a version that
doesn't.

> Isn't it too easy to ignore this error as a Windows flakiness issue;
> especially when others have seen it intermittently?
Since this problem seems to have been around for a while, and nobody
complained very much, I don't think we should hold up a release because
of it.

Anyway, svn-1.4.0 will have a number of BDB-related changes in it, and
the same tests on the same machine didn't show any problems.

-- Brane

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Received on Fri Mar 31 19:27:44 2006

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