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AW: Work in progress: WC "add node" including the props

From: Markus Schaber <m.schaber_at_codesys.com>
Date: Thu, 10 Jan 2013 14:33:11 +0000

Hi, Julian,

Nice work. I think that CODESYS SVN could profit from this, as we use properties on nearly every file to store our metadata.

Now I only need to hack (or convice Bert :-) to expose those APIs in SharpSVN. :-)

Best regards

Markus Schaber

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> -----Ursprüngliche Nachricht-----
> Von: Julian Foad [mailto:julianfoad_at_btopenworld.com]
> Gesendet: Freitag, 21. Dezember 2012 00:43
> An: Subversion Development
> Betreff: Re: Work in progress: WC "add node" including the props
> I (Julian Foad) wrote:
> > "Teach some WC and client 'add' functions to take the properties as a
> > parameter so that the whole addition including any properties can be
> > done all at once.  ..."
> I finished this and committed it in <http://svn.apache.org/r1424739>.
> I did this because of the update-move work: that needs more "regular" APIs
> to both read and write nodes in the DB.  As in we should be able to read
> "a node" including (a reference to) its text and its props in one
> call.  And similarly write "a node" in one call.
> Afterwards, I ran a test to see whether this makes a noticeable speed
> difference to "svn add", just as a curiosity -- I don't really care about
> that and that wasn't any part of my goal.  Speed freaks may be interested
> in the outcome.  In an unrealistic manual test, I put an unversioned
> export of the svn trunk inside an otherwise empty WC, and ran "svn add"
> with 25 auto-props defined on every file.
> $ time svn add wc/tree/ --config-option='config:miscellany:enable-auto-
> props=1' --config-option='config:auto-
> props:*=a=a;b=b;c=c;d=d;e=e;f=f;g=g;h=h;i=i;j=j;k=k;l=l;m=m;n=n;o=o;p=p;q=
> q;r=r;s=s;t=t;u=u;v=v;w=w;x=x;y=y'
>         pre-patch   post-patch
> real    0m7.00s     0m1.13s
> user    0m5.65s     0m0.72s
> sys     0m0.97s     0m0.32s
> This is expected because the patch eliminates the add-one-property-at-a-
> time-to-the-db loop.
> Without any auto-props:
> $ time svn add -q wc/tree/
>         pre-patch   post-patch
> real    0m1.16s     0m0.92s
> user    0m0.78s     0m0.62s
> sys     0m0.35s     0m0.29s
> This was on my Ubuntu 10.10 system, ext3 FS on a spinning disk.  Timings
> approx +/- 15%, averaged by eye from 3 runs.
> - Julian
Received on 2013-01-10 15:33:48 CET

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