Perfmon is a performance monitor for Windows that allows you to examine all performance counters maintained by the operational system.
Questions tagged [perfmon]
39 questions
57
votes
2 answers
Log %CPU by Process over time
Is there any easy way on Windows to log %CPU time per process over time to a file for later analysis?
As far as I can see...
Task manager shows me the %CPU per process but only visually - no
way to save to a file.
Perfmon will let me save to a…
LondonPhantom
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33
votes
3 answers
Permanent fix for “Do you want to change the color scheme to improve performance?” warning?
I have a problem where dwm.exe keeps suggesting I disable Aero to improve my performance whenever I play either Battlefield 3 or Anno 2070.
I get three choices:
Disable Aero
Don't disable but ask again.
Don't disable and never ask again.
The last…
Havoc
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14
votes
4 answers
How to display battery discharge rate in watts, Windows 8 + perfmon
Windows 'perfmon' utility allows to display graphs for different counters. One of them is Battery -> "Discharge rate" that can be spotted in the internet as a good way to examine battery discharge. I have tried to use it on 2 different laptops…
grigoryvp
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9
votes
2 answers
What's the difference between Processor and Processor Information in PerfMon counters?
In the Windows PerfMon tool it is possible to add many types of counters.
What is the difference between the objects Processor and Processor Information?
For example, they both have the counters: User time, Processor Time and Privilege time. So…
dublintech
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7
votes
1 answer
perfmon.exe itself taking 52.71% of CPU on Windows 7 after chrome dies?
On my Windows 7 machine (build 7100, x64, Dell XPS M1710 laptop), I'm getting horrible performance after chrome crashes. I kill the chrome process from the Resource Monitor, but after that perfmon.exe itself is shown as taking about 50% of the CPU…
James Moore
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6
votes
3 answers
PerfMon Counters missing
On my System (Win7 Ultimate x64, purchased & Installed in German(y), UI set to English), a lot of vital performance counters seem to be missing.
When starting perfmon, I get the following message:
---------------------------
Performance Monitor…
peterchen
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5
votes
1 answer
How to determine if CPU or RAM or DISK is the bottleneck on Windows 7
How do you determine if the CPU or RAM or DISK is the bottleneck on Windows 7?
Visual Studio is crippling my system and I want to find the culprit.
I tried running perfmon but there are what seems like hundreds of possible metrics. Which ones…
Matt
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5
votes
2 answers
perfmon asks me for NT AUTHORITY\SYSTEM credentials
I have setup my own performance counter data collector. It was running for a while and now I want to edit it. Upon clicking OK it asks me to enter credentials for NT AUTHORITY\SYSTEM! WTH? Obviously I don't know these and I don't think there even is…
Vitas
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4
votes
2 answers
Windows does not generate report.html for the performance reports
While I was writing up an answer for another question
I was running the windows System Diagnostics and System Performance perfmon reports. The data collector sets run fine, however when I go to view the report it brings me to the Performance…
Scott Chamberlain
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3
votes
1 answer
How is "% committed bytes in use" in Perfmon calculated?
I'm trying to track down a memory leak on a Windows 7 Embedded Panel PC. Using Perfmon I can see that the "% committed bytes in use" grows steadily at a rate of 0.77% per hour when the app in question is running. On Win XP (not embedded) systems…
rossmcm
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3
votes
1 answer
Save performance monitor counters?
When I start Performance Monitor, I see a line graph with the default counter.
I am able to add additional counters without problems, and everything seems to work okay. However they are not "saved" between uses. I.e. I have to add and configure my…
posfan12
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2
votes
1 answer
Resource and Performance Monitor error
When I try to issue this rather simple command in cmd.exe, I run into this strange error.
INPUT:
C:\Windows\system32>perfmon.exe /report
OUTPUT:
An error occured while attempting to generate the report.
The operator or administrator has refused the…
Samir
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2
votes
1 answer
what can impact windows performance besides Page File Usage, Available Physical memory and CPU usage?
Usually if windows is running slow (e.g. takes 7 seconds to open an explorer folder when it is usually sub-second), I identify that something chewing up memory or CPU. However, sometimes both are very low and the computer is still slow. In these…
JStark
2
votes
1 answer
Powershell Script with Procdump
So I have a system that runs pretty slow at night when running a report. I've configured Performance Monitor to monitor the system. What I'm finding out is there is a process that is tying up all the CPU. I'm wanting to write a Powershell script…
Alan
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1
vote
1 answer
Poolmon Nonp total bytes not equal to Perfmon Memory > Nonpaged Pool Bytes
We are monitoring a server for a potential Nonpaged Pool memory leak.
So we setup a cmd batch file to output to the Nonpaged Pool allocation every 10 mins.
We also setup a perfmon counter log to capture Memory > Nonpaged Pool Bytes.
As well as an…
Jacques Thomas
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