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Re: svnadmin load is slow for many small revisions

From: Daniel Shahaf <d.s_at_daniel.shahaf.name>
Date: Wed, 16 Nov 2011 23:40:42 +0200

We are not going to fix any speed issues in 1.5.

That said, why are you so sure you must use exactly 1.4? Subversion 1.7
can create, read, and write 1.4 repositories. And there have been
significant performance improvements in the past four years...

Vyacheslav Zholudev wrote on Tue, Nov 15, 2011 at 23:29:09 +0100:
> Hi all,
> After transition from debian lenny to squeeze I recompiled my version of SVN 1.4 (yes, I do need exactly 1.4). I tried to load a dump with many 1 file revisions into the BDB-based repository.
> First 300 revisions are committed really fast, like 10 revisions per second. After 1000 revisions, it is about 1-2 seconds per one revision. And performance keeps degrading.
> I'm curious what that might be? I tried to compile against different versions of APR (from 1.3 to 1.5) with BDB 4.8. I used libtool 1.5 since autogen.sh does not work with libtool 2.2. May this be somehow related to my issue? Maybe some compilations flags are wrong for a new system, or some libraries that I'm linking against (e.g. neon)?
> I have no real clue what that might be, so I will highly appreciate if somebody can give me any pointers, even vague ones or possible hints to try, since I really need SVN 1.4 for my other projects.
> P.S. CPU usage is very high, waiting for IO was about high (that what I would expect) and decreases to 0% over the time.
> P.P.S. I also tried to compile in maintainer mode and without, with preinstalled APR, and by putting them into source tree, with mod_dav and without. Still the same...
> Thanks a lot in advance,
> Vyacheslav
Received on 2011-11-16 22:41:27 CET

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