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Re: Automatic deltify nice - turning it off temporarily better

From: C. Michael Pilato <cmpilato_at_collab.net>
Date: 2003-12-17 14:50:45 CET

Branko Čibej <brane@xbc.nu> writes:

> John Peacock wrote:
> > Branko Čibej wrote:
> >
> >> In cases like you describe, it would be better to have _synchronous_
> >> deltification rather than asynchronous. IIRC, Mike ran tests with
> >> synchronous deltification during commit vs. manual deltification after
> >> load, and the cumulative time was the same.

'svnadmin load' is using synchronous deltification. Even when we were
calling 'svnadmin deltify' from the post-commit hook, 'svnadmin load'
still did in-process deltification. In other words, with respect to
deltification, 'svnadmin load' hasn't changed its behavior since its
introduction into the codebase.

Actually, wait a second. I don't think that Karl introduced *any*
fork()s into the system. He just put the deltification call into a
pool cleanup hook on the Apache request pool. And svnserve is doing
in-process deltification, too.

Whatchoo talkin' 'bout, Brane?

> He did it for the Subversion repository, I think.

That's correct. At the time, I think there were about 7000 revisions
in that repository.

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Received on Wed Dec 17 15:58:49 2003

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