[cvsnt] sync-protocol questions

Arthur Barrett arthur.barrett at march-hare.com
Mon Sep 29 13:53:48 BST 2008

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> > No - it is as Jan already replied.  The slave passes all 
> the writes to
> > the master which would then fail the commit.  The system is 
> failsafe in
> > this way.
> Now that I read it a second time, I got it :-)
> So this is not two local cvsnt servers, that synchronize once 
> in a while,

Someone would need to manually manage the merges or one would become
authoratitive and the other not.  Lots of proposed (and even dangerously
implemented) techniques for handling this are around including swful
quarum based things - but they all create more problems than they solve.

> but it is more of one cvsnt server and one cvs-proxy-with-local-cache.

Something I should have pointed out in my previous post is that the
whole replication/sync thing is completely unnecessary.

This question of 'sync' is usually asked by people who are not using CVS
well and therefore experiencing performance issues.  CVS was designed
over 20 years ago for use on networks that ran at a fraction of the
speed of todays slowest networks - you never ever ever need more than
one repository server to solve performance issues even on the slowest

See my many previous posts about this issue:
And many many more...

(Note your e-mail reader may 'split' those links over multiple lines, so
you may need to paste them together before using them).

If you are experiencing performance problems you are far better off
describing the workflow you are using and the specific commands that
cause performance problems (and the context of those commands) and being
willing to look at traces and workflow and such things to find the
problem and fix it at the source - any multi-repository/sync 'solution'
to performance problems is generally a bandaid (however there are
occasionally sound business reasons for it, and extremely rarely sound
reasons to use it to solve performance issues).


Arthur Barrett

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