[SVN-1204] ssh+svnserver checkouts much slower than dav (esp to Win32)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: all
• Fix Version/s: 1.2.0
• Component/s: libsvn_ra_svn
• Labels: perf
• Assignee: Unassigned
• Reporter: Subversion Importer
• Created: 25/Mar/03 00:04
• Updated: 27/Oct/18 16:39
• Resolved: 10/Mar/09 15:22

Description

I recently moved a local repository to a colo machine, and noticed
access was a bit slower, but didn't think much of it because of the
distance. However when others started using it, we noticed checkouts
were taking > 1 second per file. 

Benchmarking shows that a checkout (46 files) takes approx 4 times
longer over ssh+svn than the dav access we use for read-only
checkouts. The server is running on linux, and the measurements were
done with linux and macosx clients. The actual runtimes for each
machine were also the same, suggesting the constraint is
bandwidth/latency.

The test repository is http://svn.ghostscript.com:8080/jbig2dec/trunk

Others are reported (irc) to have seen a factor of 10 difference with
clients on Windows.

This project is small, but we're planning to move ghostscript (1900
files) to a subversion repository at 1.0. If this issue does indeed
scale linearly, we're in trouble.

Original issue reported by rillian