I have a windows 2003 server that runs a range of applications for video transcoding. Performance is today almost non-existant - system idle process eating 85% - 90% of processor power when 3 other applications are crawling along and not running as they should.
system is dual xeon 2.8Ghz
I've restarted the server. No change.
I can't see what the problem is. Network use is running at 0.5% - 1% on a gig-e interface. Free physical ram is 760MB, average cpu load is 10-20% but there are processor hungry applications taking ages to run and not eating cpu cycles that seem to be free.
system calls per second is running at a mean of 13290 per sec, min 7200, max 24000
context switches per second mean 6400
any ideas as to how best to establish where the bottleneck is or what the problem is??