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Tobias Rodenbach wrote: > Hello, > > I observed the following strange behaviour, when "many" people tried > to access our cvs server (I counted about 35 instances of cvs.exe). > Then, the CPU usage history of the Windows Task Manager shows that CPU > Usage goes to about 50% for about 10 seconds, then drops to below 3% > for about 10 seconds, rises to about 50% for 10 seconds and so on... > Sometimes CPU usage stays high or low for more than 10 sec but most of > the time it alternates in the 10 second scheme. > > In general, the performance is very low. Checking out using a tag > (which is the most common case here) can take up to one hour for > around 6 MB in the local LAN. ("Normally" that takes significantly > less than one minute.) > > The host is a Win2003 server with 2 hyperthreading CPUs, the cvsnt > server is version 2.5.02 build 2115. > > Does anyone have any idea what could be the reason for this behaviour? Sounds like either the network performance is fluctuating or your disk is not handling the contention well. I would expect 35 instances of cvs.exe to be using 100% pretty much all the time (although they wouldn't get much each). Make sure you've uninstalled any firewall/AV products before running any tests - AV in particular can murder the performane of the server (in the order of 20-100* slower). Tony