NtQuerySystemInformation needs a little bit more flesh for SystemProcessorPerformanceInformation

Paul Vriens paul.vriens.wine at gmail.com
Mon Aug 1 02:55:14 CDT 2011

On 07/28/2011 08:31 PM, Juan Lang wrote:
>> This Reserved1[0] is the DPC Time but I'm wondering what values from
>> /proc/stat to use here (remainder[0] is I/O wait). We could always make up
>> something of course but being accurate would be nicer.
> DPC Time has no equivalent in /proc/stat.  It's an NT thing.  Making
> something up is the only appropriate thing, unless we start doing
> something special with DPCs someday.
> --Juan

Thanks Juan.

Making something up turns out to be easy but the result is not good 
enough yet. I first want to find out how the whole cpu usage is 
calculated in some of the tools.

Having a number in the overall cpu usage is nice but it should be close 
to what it should be in this case.



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