Thread: 100% CPU bug
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Old 03-11-2002, 06:46 PM   #41
BleacherBum
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TECHNICAL INVESTIGATION (the geek stuff):

OK, I resorted to looking at the Windows Performance Monitor. With OOTP4 running (on the startup screen, the following specific measurements are impacted severely:

Processor / %Processor Time - runs consistently at 100%
(near 0% without OOTP)
Processor / %User Time - runs about 95% on startup screen, down to about 70% after hitting "Let's Play"
(near 0% without OOTP)

System / Processor Queue Length - ranges from 3 to 12 with OOTP running, avg is 4+
(ranges from 1-2 without OOTP but while using other apps)

This last one is important, per Microsoft mgmt console help (text reproduced below)

Investigating processor bottlenecks
A processor bottleneck develops when threads of a process require more processor cycles than are available. Long processor queues can build up and system response suffers. The two most common causes of processor bottlenecks are CPU-bound programs and drivers or subsystem components (typically disk or network components) that generate excessive interrupts.

To determine whether a processor bottleneck exists due to high levels of demand for processor time, check the value of the System\ Processor Queue Length counter. A queue of two or more items indicates a bottleneck.

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OOTP Developers - any thoughts on this? Should I provide any other information?
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