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From Markus Schaber <>
Subject RE: Big files PUT into Subversion - encountering
Date Wed, 12 Jul 2017 06:22:33 GMT
Hi, Paul,

If at all, I’d expect a speed boost if the temp folder is on a fast drive (e. G. SSD or
RAM Disk) separate from the backend storage, so storage and temp file I/O won’t compete
for I/O. (Size of RAM useable for OS caches also makes a difference, and mount options like
“no-sync” which can be acceptable for temp folders – but never for backend storage,
of course).

And I also guess the speed difference is more siginificant if there are several concurrent
accesses, so the I/O operations overlap. A single SVN backend process is pretty much “serialized”
in what it does, no concurrent / async I/O yet.

Best regards

Markus Schaber

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From: Paul Hammant []
Sent: Tuesday, July 11, 2017 10:11 PM
To: Subversion Development
Subject: Re: Big files PUT into Subversion - encountering

Reporting back -

The /etc/apache2/envvars file is the perfect place to change the temp folder that Apache uses
on load, and avoid an out of space error for biiiig files(see log above).  I thought there
might also be a speed boost for having the temp folder set to the same driver as the destination
folder for Subversion's server-side storage, but there is not unfortunately. Or if there is,
I can't quantify it.

- Paul
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