Re(2): Fwd:[cvsnt] Re: Performance problem with large f il es

Mark Victory mark.victory at
Fri Oct 22 10:19:48 BST 2004

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If you can store these executables in a compressed form (.zip, .gz, or
whatever) this will reduce the load on your server. You can then modify your
scripts to uncompress these files before running them.


> -----Original Message-----
> From: at [ at]
> Sent: 22 October 2004 09:26
> To: cvsnt at cvsnt downloads at @CVSNT on Twitter CVSNT on Facebook
> Subject: Re(2): Fwd:[cvsnt] Re: Performance problem with large f iles
> Tony,
> I'm interrested in using an other method to store theses big 
> files. Do you have
> an idea of an alternate methode ?
> The files I use are script files that are frequently updated 
> (In this case CVs
> fits well). These scripts use external exe files that can be 
> very large.
> I want to be certain that we I do a Checkout I get all the 
> files that I need to
> run the script.
> Thanks for your help
> Michel Leclerc
> Tony Hoyle  (21/10/2004  16:40):
> > at wrote:
> >> Tony,
> >>
> >> It seems that network speed is not the bottleneck. I've 
> tried with a speed of
> >> 10 Mbits, 100Mbits and gigabit and it does not make a big 
> difference.
> >> These large files are binary files and I don't understand 
> why they require so
> >> much CPU resources. Why CVs does require so much memory to 
> handle these
> files?
> >> Which amount of memory do I need to feel comfortable?
> >
> >It depends on the amount of activity going on at the same 
> time, whether
> >you're checking out HEAD, etc.
> >
> >A 270MB file will at a minimum use twice that size for checkout, then
> >the disk space for the temporary file, before sending to the client.
> >
> >If you're not checking out HEAD you can double that memory 
> requirement,
> >at least.  If multiple users are going to be checking out
> >simultaneously, multiply the whole thing by the number of users.
> >
> >A version control system doesn't simply store the files on 
> disk, it has
> >to calculate differences between versions and (during checkout)
> >reconstruct the original file.  There are also some changes 
> required by
> >the RCS file format that mean you don't entirely get away 
> with it even
> >for HEAD.  The faster the CPU the better for this kind of thing - no
> >matter how efficient the algorithm a file of that size is 
> going to take
> >a significant time to process.
> >
> >You may be better off using an alternate method of storing 
> those files,
> >as you're quickly going to end up with RCS files of several 
> GB in size -
> >this makes backup of those files difficult.
> >
> >Tony
> >_______________________________________________
> >cvsnt mailing list
> >cvsnt at cvsnt downloads at @CVSNT on Twitter CVSNT on Facebook
> >
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