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From "Yoav Shapira" <yoa...@MIT.EDU>
Subject RE: New tag ?
Date Sat, 23 Jul 2005 19:28:52 GMT
Your plan is reasonable and good, +1.  We can nag infra and the svn team and
hopefully they will improve.  But the bottom line is that we have no choice,
must migrate to svn by 1/1/2006.  We should just pick the date that's best
for us...

Yoav Shapira
System Design and Management Fellow
MIT Sloan School of Management
Cambridge, MA /

> -----Original Message-----
> From: Mark Thomas []
> Sent: Saturday, July 23, 2005 3:14 PM
> To: Tomcat Developers List
> Subject: Re: New tag ?
> Remy Maucherat wrote:
> > It's not really a UI thing for me. One feature I use often are revision
> > lists for a particular file, to be able to tell where a bug has been
> > introduced (I then do diffs between revisions). It seems with SVN I have
> > to retrieve the full revision list for the repository (which will take
> > hours). If someone can offer a workaround for this problem, then I'll
> > support a move to SVN :)
> I have been doing some quick tests and my totally unscientific,
> statistically invalid results are that cvs annotate seems to be about 7
> to 8 times faster than svn blame (50s compared with 7s) and cvs log
> seems to be about 2 to 3 times faster than svn log (16s compared to 7s).
> The svn release notes show a number of modifications to improve the
> speed of response for a number of commands. The svn team does seem to be
> moving things in the right direction.
> I guess the question is can we live with this magnitude performance
> drop? It is also worth bearing in mind that there is no sign of any
> scope for negotiation in the CVS switch-off date of 1/1/2006.
> I would suggest the following way forward:
> 1. Highlight our performance concerns to infra
> 2. Request a test migration of something we don't use very much (eg
> Watchdog)
> 3. Run some tests so we have some more realistic performance figures
> 4. Review the results
> 5. Decide what to do next once we see the performance results
> If people think this is sensible, I am happy to do 1 to 3 and publish my
> results so we can do 4 and 5.
> Thoughts?
> Mark
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