On 06.07.2017 13:54, Paul Hammant wrote:
> For something that's 500MB in size (random binary data) I'm
> experiencing commits taking
> 10x longer than a straight copy to the drive the Svn repo is on.
>
> Both timings are on the same Ubuntu 17.04 machine, with the boot drive
> being the starting position of the 512MB file and a USB3 mounted 4TB
> seagate hard drive being the destination.
>
> My goal is to fill the 4TB drive with commits for the simple
> experience of that.
>
> How many places in the Apache2 --> mod_dav --> mod_dav_svn handoff
> does the 512MB temporarily manifest itself in a file system on the way
> to its ultimate destination? Is 1/10th speed the expectation? Sure,
> I get that 7bit/8bit shenanigans are a factor, but not that much right?
7 vs. 8bit shouldn't be an issue; data transfers are binary. If you're
committing updates to the file, deltification could be part of the
reason for the slowdown. Other than that ... performance measurements
would help.
-- Brane
Received on 2017-07-06 14:03:54 CEST