Re: Long delay after commit

On 21.01.2011 10:35, Ulrich Eckhardt wrote:
> Hi!
>
> I have the effect that the commit window hangs for some time after sending the
> changes. This is not a showstopper, but an annoyance still. I know that the
> commit was finished because updating a different working copy actually pulls
> those changes from the repository. I'm using svnserve on Red Hat on a virtual
> machine hosted on a machine in the LAN. There are a few post-commit scripts
> that could influence the timing: three calls to commit-email.pl (which
> exclude the diffs) and one for TRAC integration. What I could surely do there
> would be to run them in the background ("somescript&"). However, what I'm
> wondering is whether these post commit hooks can influence TSVN at all? Or
> should I try to look at things happening locally that influence the timing?

SVN clients wait for all post-commit hook scripts to finish. That's why
most of those scripts should be run in a separate process. For example,
the commit-email script should be started as a separate thread so the
original hook script (the one that stars the email script) can return
immediately. Otherwise if mail servers are slow or don't respond, the
SVN client has to wait too.

Apart from that: after the commit succeeded, SVN clients adjust the
working copy which can also take a while, especially if a lot of files
have been committed. If an SVN client were to be interrupted in this
state, the commit would show up in the repository, but all the committed
files in the working copy would still show up as modified. An update
fixes that.

So I'm not sure which is the reason for the delays you're seeing. But I
would guess it's the first one.

> Lastly, drifting further off-topic, can 30k commits in a repository cause any
> slowdown in above described components?

Yes, such big commits take a while to get processed by the email script
(it has to get the diff, prepare the email in memory, send *big* emails,
...).

Stefan

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