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Re: Link latency and ra_svn/ra_dav performance

From: Tobias Ringström <tobias_at_ringstrom.mine.nu>
Date: 2003-10-23 01:14:42 CEST

I made another test (as suggested by Greg on IRC) by checking out
subversion instead of my own little tree. Checking out a freshly import
subversion from the 0.31.0 tarball over a 2000 kilobit 16 ms (i.e. quite
*low* latency) link:

        svn before patch : 2m18.837s [latency limited]
        svn after patch : 0m54.240s [bandwidth limited]
        cvs over ssh : 0m32.551s [bandwidth limited]

The only reason CVS is faster here is because it transmits less and
compresses better. I would need more bandwidth to be able to separate
them properly.

I want to stress that the potential difference is *much* greater than
the factor of 2.5 above. It all depends on the size of the files and the
network latency and bandwidth.

This kind of performance gain is possible for both ra_svn and ra_dav.


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Received on Thu Oct 23 01:15:27 2003

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