On Sun, Feb 24, 2008 at 7:59 PM, Matt Sickler
<crazyfordynamite_at_gmail.com> wrote:
>
> On Sun, Feb 24, 2008 at 6:27 PM, Mark Phippard <markphip_at_gmail.com> wrote:
>
>
> > On Sun, Feb 24, 2008 at 7:11 PM, Chris Rose
> >
> > <chris.rose_at_messagingdirect.com> wrote:
> >
> > > Waittaminute... _client_ IO is the issue? That doesn't make sense;
> we're
> > > using a variety of clients ranging from modern Windows and Linux laptop
> and
> > > Desktop machines to Solaris 8 build servers, and they're all slow; I'm
> not
> > > discounting it, but it seems to me that the problem in our case might be
> > > more centralized.
> > >
> > > That said, I'll look into the server-side I/O issues, too. The machine
> > > hosting the repository is using RAID and some kind of high-end storage
> that
> > > I don't directly deal with; I'll pester our sysadmin to look into it.
> > >
> > > Thanks for the input. Anyone else? :)
> >
> > Checkout is probably the worst operation to benchmark. Subversion
> > writes out twice as much client-side data as CVS, so unless your
> > network or server is a big bottleneck, it would be expected for
> > checkout to be much slower than CVS. Also, how often are you doing
> > checkout, compared to update and commit. These are the operations
> > where Subversion shines, not to mention the client-only features like
> > diff and revert.
> >
> > There is nothing you can do to make checkout in Subversion as fast as
> > CVS. As Erik pointed out, using the ra_serf library might offer a
> > small boost. Using svnserve instead of mod_dav_svn offers a definite
> > boost. In either case, it should still be slower than CVS though.
>
> why would the network have to transfer any more data than CVS? Wasn't SVN
> designed to use the network most effectively?
SVN probably sends less data over the network than CVS, although
perhaps not when using HTTP. What I was saying was that unless you
have a really slow network connection, then the client side processing
is going to be the biggest determinant of performance. IOW, I was
trying to answer your question as to why it is the client that would
matter for performance.
--
Thanks
Mark Phippard
http://markphip.blogspot.com/
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Received on 2008-02-25 02:38:25 CET