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RE: More FSFS performance comments

From: Lakshman Srilakshmanan <lakshman.srilakshmanan_at_tradingpost.com.au>
Date: 2006-09-07 05:45:52 CEST

Hi Troy,

Do you have one project that occupies ~2GB of space, or multiple
projects contained in one repository consuming ~2GB of space. I suspect
the later, because we have multiple projects contained in multiple
repositories occupying ~1.7GB and no performance impact. The largest
project is ~120MB.

Maybe you should consider re-organising your repository into smaller
ones. :)

BTW : Were you suggesting that it takes ~6min to checkout the entire
~2GB ?


> -----Original Message-----
> From: Troy Curtis Jr [mailto:troycurtisjr@gmail.com]
> Sent: Thursday, 7 September 2006 11:50 AM
> To: users@subversion.tigris.org
> Subject: More FSFS performance comments
> Hey everyone, it's me again complaining about FSFS performance issues.
> I was really excited to hear about the improvements in the disk usage
> and performance of FSFS in the 1.4 release. So I got approval and
> converted our 1.3.2 repo of ~2 GB / 60000+ revs over to 1.4. I was
> really hoping (but not expecting) for one of the 50% repo size
> reductions that are possible , but it only shaved off 300 MB or so.
> Oh well that was not to big of a deal as disk space is cheap.
> I was really banking on the performance improvements (recap, FSFS: ~6
> min checkout times, ~35 min hotcopy times and BDB: ~3 min checkout
> times, ~7 min hotcopy times). Alas, my checkout times increased to
> just over ~8 minutes! Granted this was only a single test case (all I
> had time for today) and there may have been some gzipping happening on
> the server.
> So in the end, I must use BDB. I just hope that I do not have to many
> admin issues!
> Oh, I do have a question. I did a dump on my 2GB repo with the
> --deltas option and the resulting dump file was (uncompressed) just
> under 400MB. Why is the size blowing up so much in the repo since it
> supposedly stores stuff as deltas also? I was thinking it might have
> something to do with having 10's of 1000s of small revs files taking
> up more disk space than is necessary, but the BDB repo is only
> slightly smaller (<100 MB). What about the properties, specifically
> the svn:keywords property that cvs2svn sets? Could that account for
> the size? Maybe it is worth another 15 hour conversion to test it...
> Thanks for everything and I really do like subversion a lot.
> Troy Curtis
> --
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Received on Thu Sep 7 06:27:29 2006

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