AW: RE: slow checkout on windows client

Hi,

from what's being reported on the list, deactivating on access virus-scanners did improve the performance significantly. From my experience it seems that checking out in a directory that's on a remote server (samba share) slows thing significantly as well, especially if the share is on a samba version 2.x server. Both effects seem to depend more on the number of files in the repository than on the size of files (lots of small files are significantly slower than few large files).

regards

felix

Kevin Aubuchon <mailto:Kevin.Aubuchon@reuters.com> schrieb am Dienstag, 7. März 2006 14:22:

> We also use subversion from a Windows client environment. We use
> TortoiseSVN and the cmd line cilent. Both are slow. Some of
> the problem
> is our network connections to the repository. My experience
> with the cmd
> line client is about the same as yours. Our entire project (3000+
> files) may take an hour to check-out.
>
> We don't checkout code often. We keep multiple working copies (one for
> each branch) so we don't have to "switch", which is also very time
> consuming.
>
> Kevin
>
>
> -----Original Message-----
> From: Glenn Serre [mailto:gaserre@spiresoftware.com]
> Sent: Tuesday, March 07, 2006 1:21 AM
> To: users@subversion.tigris.org
> Subject: slow checkout on windows client
>
> Good evening,
>
> We have just switched our development project from CVS to Subversion.
>
> There are about 3500 files in lots of subdirectories, and
> from my point
> of view, the switch is going pretty well. The biggest user
> question so
> far is why is checkout so slow compared to CVS, and even
> more, why is it
> so slow compared to Subversion on Linux? I couldn't find much recent
> (after 2004) discussion about this on the mailing list or the FAQ, but
> if someone has a pointer to some documentation or discussio bn, I'de
> happy to have it.
>
> More detail on our setup:
>
> Access method: svn+ssh.
>
> Windows client: cygwin subversion (1.2.3) and cygwin ssh
> (OpenSSH_4.3p1).
>
> Linux client: svn version 1.2.3, fsfs
>
> Our source code checkout from Subversion (including the .svn
> directories) is about 250Meg.
>
> Our time for svn checkout from the local network is ranges
> from 10 to 20
> minutes. My time for svn checkout over a slower DSL line (I work from
> home) also ranges from about 10 to 20 minutes.
>
> The time for svn checkout on the local network on a Linux client (not
> the server machine) was reported to be 42 seconds!
>
> From a previous, relatively short subversion email thread (in 2004, I
> think) I might say that the checkout time for Subversion on Windows is
> longer than the equivalent time for CVS because
>
> - SVN writes the entire original file to local disk.
> - SVN writes more files to local disk
> - SVN writes does more setting of modification times and access lists
> (?).
>
> As to why Linux is so much faster than Windows, I would guess
> that Linux
> file system optimization is just a closer match with what Subversion
> uses that is the Windows file optimization, although I guess there's a
> possibility that the Windows client could use some optimization work
> (?).
>
> Other data: Running the 1.3.0 Windows client from the command prompt
> rather than the cygwin shell appears to yield some performance
> improvement, but nothing as dramatic as the Windows vs. Linux
> difference.
>
> Questions:
> - Any pointers on how to speed up the Windows checkout performance?
> - Does the Linux vs Windows performance difference seem reasonable
> (in line with experience)?
> - Anything I can do to help with speeding up the Windows client
> performance (I'm willing to invest a some development time on this).
> - other comments?
>
> Thanks in advance for your time,
> --Glenn S.
>
>
>
>
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-- 
Felix Gilcher
Head of IT Development
Exozet Berlin GmbH
Rotherstraße 20
10245 Berlin
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