Re: why is CVS so slow

[Todd Denniston]

Michael Schiestl wrote:
> 
> Hello,
> 
> I am using the latest version of CVSNT in combination with TortoiseCVS in my
> 100Mbit LAN. My Computers are quite up-to-date (~2Ghz, 512MB RAM). Still,
> CVS operations are really slow (add, commit, update,...). I can see no
> reason for that. The CPU usage is at about 10%-20% on both - client and
> server - computers. Same with the network utilisation which is around 5%.
> 

what is the access method? pserver, rsh, ssh, smb mounted directory, CVSNT
method?
Is your name server working well? (should take < 10 seconds to nslookup all
254 names in the last octet, I know this one as I am currently experiencing
a problem)
does someone have a switch/hub looped through another switch/hub and back to
the original switch on your network? (sure low utilization, just high
burst/collision) Note, this could also be on a 10Mb sub LAN if you have some
legacy equipment (thin net/thick net).


BTW CVSNT questions will probably get answered better on their list.
http://www.cvsnt.org/cgi-bin/mailman/listinfo/cvsnt




> Where the hell is the bottleneck? 

answers to the above questions may narrow it down.

> Is there a way to make CVS faster?

sometimes. :)
(times stated for a checkout of a 300MB tree I have worked with)
using it on the physical server is as fast as you will get (I think). (1-2
Minute)

using it through pserver, rsh or ssh are usually very reasonably fast on a
LAN.(3-10 Minute, checked out with rsh onto a NFS mounted sandbox, both sets
of trafic on the same 100Mb network)

NFS/SMB mounted repository....DON'T DO IT (for other reasons, search the
archive for this list for "network file system"|"SMB"|"NFS"). 

> 
> Greetings,
> Michael
> 

-- 
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane) 
Harnessing the Power of Technology for the Warfighter