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Scalability Testing This Week (was: Re: Repos corruption continued)

From: <tnoell_at_lexmark.com>
Date: 2003-10-10 17:30:22 CEST

Hi Ben:

I have been monitoring the users list for a few weeks now. We are working
on a revamp of our SCM capabilities, and are planning to wrap our process
on top of Subversion, for deployment in the 2Q04 time frame.

Management has asked repeatedly what the "robustness" of Subversion is for
our application. The big issue from my perspective is that I have about
120 developers in Lexington, and will have upwards of 50 "off shore"
comming in over a WAN. (luckilly, 12 hour time difference, so not all at
the same time).

So, I was wondering if you and the folks doing scalability testing this
week are planning on concurrent user scalability testing. i.e., what
happens when 120 people (or 500) are banging in lots of commits
"simultaneously". I am being asked if it will hold up, and I don't know
what to say, yet.

Also, I'm soliciting opinions on how concerned I should be about all the
buzz re: repository corruption. I have 3 code bases. One is about 30,000
files, one is about 10,000 files, and one is about 2000 files. (These are
'C' and C++ sources and headers, makefiles, perl scripts, etc, used to
cross compile code for embedded cards in our printers).

Best Regards,
Tim Noell

Ben Collins-Sussman <sussman@collab.net>@collab.net on 10/10/2003 08:38:17
AM

Sent by: sussman@collab.net

To: "Jan Hendrik" <jan.hendrik@bigfoot.com>
cc: users@subversion.tigris.org
Subject: Re: Repos corruption continued

"Jan Hendrik" <jan.hendrik@bigfoot.com> writes:

> At least from following the list I got the impression that SVN is
> perhaps not particularly happy with large imports/commits. It
> seems to me that irrespective of the system there are latent
> problems. Not with the final size of the repos or the number of files,
> but with commits.

Well, yes, we have heard of "latent problems with commits", but none
of the developers seems able to reproduce them yet.

However, a bunch of us have started scalability tests this week.
Maybe we'll reveal something. For example, yesterday I started doing
repeated imports of the mozilla source tree (340M, 42k files), looking
for problems. The only problem we found was a memory leak, no
timeout problems.

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Received on Fri Oct 10 17:37:03 2003

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