svn - but smaller?
John Mehr
jcm at visi.com
Mon Mar 25 01:55:13 UTC 2013
On Sun, 24 Mar 2013 05:55:19 +0200
Markiyan Kushnir <markiyan.kushnir at gmail.com> wrote:
> Hello John,
>
> Tested svnup for a while, and I can say it does its job
>well, and works basically as I would expect, so thanks
>for your initiative. Although it appears to be quite
>resource greedy. Most of the time it showed something
>like:
>
> PID USERNAME THR PRI NICE SIZE RES STATE C
> TIME WCPU COMMAND
> 22270 mkushnir 1 102 0 44944K 31804K CPU0 1
> 6:22 97.56% a.out
>
>
> I looked at the source code, and found that it uses svn
>commands that are known as the "main command set". The
>program is implemented around get-dir and get-file. I
>think there is significant room for resource and
>performance improvement.
>
> Have you considered an approach to use what svn folks
>call the editor command set? I mean acting as a trivial
>svn client: we might ask the server to drive our checking
>out or updating. The server will be telling us only
>diffs. Checking out a full tree would be just another
>diff, although bigger than usually. We would also benefit
>from compression on the wire.
>
> Another advantage would be to always have consistent
>repo more-or-less guaranteed by the svn server.
>
> I've done some proof of concept recently, and the
>results look encouraging to me. For example, a do-nothing
>update really does nothing. A two-or-three revisions
>update takes a couple of seconds. And a full checkout of
>the base/stable/9 takes ~7m30s at 530kB/s to me.
Hello,
The results I was getting from testing out the svn
protocol's editor command set were unpleasant enough to
put it into the "come back to this later" category while I
worked on implementing the http/https side. The good news
it that the http side is *much* easier to work with in
this respect and getting a report with filenames and
MD5/SHA-1 signatures for all of the files in the
repository can be obtained all at once. I should have a
new and improved version ready to go this weekend or early
next week at the latest.
More information about the freebsd-stable
mailing list