NtQuerySystemInformation needs a little bit more flesh for SystemProcessorPerformanceInformation
27 Jul
2011
27 Jul
'11
3:06 p.m.
Hi,
I was trying out the latest SysInternals Process Explorer and it struck
me that the overall CPU % stayed at 0.
Adding some values to the sppi structure fixed this but I'm just
wondering what values to use:
sppi[cpus-1].Reserved1[0].QuadPart = (ULONGLONG)remainder[0] *
10000000 / clk_tck;
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.
--
Cheers,
Paul.
28 Jul
28 Jul
6:31 p.m.
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
1 Aug
1 Aug
7:55 a.m.
On 07/28/2011 08:31 PM, Juan Lang wrote:
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.
--
Cheers,
Paul.
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
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days inactive
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2 comments
2 participants
participants (2)
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Juan Lang -
Paul Vriens