[cvsnt] RE: performence problem

[Peter Crowther]

> From: Stéphane Nicoll [mailto:Stephane.Nicoll at bsb.com] 
> I've made more tests today using the "Performance" tool 
> available on Windows 2000 server. The %disk time and %disk 
> write time is almost 100%, the %idle time is almost 0% !!

That sounds like an issue, certainly.  I'd suggest measuring the average disk queue length rather than the %time, however.

There are two things to check here: memory usage and disk I/O.  Too little RAM can cause heavy disk traffic due to paging, or you might have plenty of memory but CVS is simply hammering the disk.  Try monitoring Memory / Pages Output per second and Memory / Available memory (you can get a quick idea of the latter by looking at Task Manager).  Windows NT/2000/2003 will try to maintain around 10% of physical memory as available memory.  If your available memory is much lower than that, something's almost certainly causing memory pressure.  This could be file cache or process memory; Pages Output should help you to tell the difference.

If Available Bytes is OK and there's not too many Pages Output, you've probably saturated your disk I/O.  What's the disk subsystem?

		- Peter