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Posted to dev@subversion.apache.org by John Belmonte <jo...@neggie.net> on 2005/04/30 02:25:13 UTC
svn log --limit not performing
Using svn 1.2rc2 with direct file access to a repo, "svn log --limit"
does not exhibit the performance characteristic I expected. The only
time it works quickly is when I give it the repository root. For
example, "svn log --limit 2 file:///myrepo/root" takes 1s, compared to
target file:///myrepo/root/foo which takes 35s (the repo is about 5000
revs on a slow NFS). Does that make any sense? Using a working copy
target is equally slow.
-John
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Re: svn log --limit not performing
Posted by John Belmonte <jo...@neggie.net>.
Peter N. Lundblad wrote:
> On Fri, 29 Apr 2005, John Belmonte wrote:
>
>
>>Using svn 1.2rc2 with direct file access to a repo, "svn log --limit"
>>does not exhibit the performance characteristic I expected. The only
>>time it works quickly is when I give it the repository root. For
>>example, "svn log --limit 2 file:///myrepo/root" takes 1s, compared to
>>target file:///myrepo/root/foo which takes 35s (the repo is about 5000
>>revs on a slow NFS). Does that make any sense? Using a working copy
>>target is equally slow.
>>
>
> Yes, looking at the code, one sees that log isn't as streamy as it could
> be. If you have time, you could file an issue for it.
Posted as issue 2290
(http://subversion.tigris.org/issues/show_bug.cgi?id=2290).
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Re: svn log --limit not performing
Posted by "Peter N. Lundblad" <pe...@famlundblad.se>.
On Fri, 29 Apr 2005, John Belmonte wrote:
> Using svn 1.2rc2 with direct file access to a repo, "svn log --limit"
> does not exhibit the performance characteristic I expected. The only
> time it works quickly is when I give it the repository root. For
> example, "svn log --limit 2 file:///myrepo/root" takes 1s, compared to
> target file:///myrepo/root/foo which takes 35s (the repo is about 5000
> revs on a slow NFS). Does that make any sense? Using a working copy
> target is equally slow.
>
Yes, looking at the code, one sees that log isn't as streamy as it could
be. If you have time, you could file an issue for it.
Best,
//Peter
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Re: svn log --limit not performing
Posted by John Belmonte <jo...@neggie.net>.
Kevin Puetz wrote:
> John Belmonte wrote:
>
>>Using svn 1.2rc2 with direct file access to a repo, "svn log --limit"
>>does not exhibit the performance characteristic I expected. The only
>>time it works quickly is when I give it the repository root. For
>>example, "svn log --limit 2 file:///myrepo/root" takes 1s, compared to
>>target file:///myrepo/root/foo which takes 35s (the repo is about 5000
>>revs on a slow NFS). Does that make any sense? Using a working copy
>>target is equally slow.
>>
>>-John
>
> One obvious suspect is that it's having to scan a lot more revisions to find
> 2 of them that affect /foo. On the root, --limit 2 is the first two
> revisions no matter what; deeper in, it could have to go back a long way.
That's not the case here-- my most recent commits were inside
file:///myrepo/root/foo.
Can anyone else confirm this behavior?
--John
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Re: svn log --limit not performing
Posted by Kevin Puetz <pu...@puetzk.org>.
John Belmonte wrote:
> Using svn 1.2rc2 with direct file access to a repo, "svn log --limit"
> does not exhibit the performance characteristic I expected. The only
> time it works quickly is when I give it the repository root. For
> example, "svn log --limit 2 file:///myrepo/root" takes 1s, compared to
> target file:///myrepo/root/foo which takes 35s (the repo is about 5000
> revs on a slow NFS). Does that make any sense? Using a working copy
> target is equally slow.
>
> -John
One obvious suspect is that it's having to scan a lot more revisions to find
2 of them that affect /foo. On the root, --limit 2 is the first two
revisions no matter what; deeper in, it could have to go back a long way.
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