Performance Monitor is a program to monitor and log system performance on Microsoft Windows. From command-line invocation it is also known as PerfMon, perfmon, perfmon.exe and perfmon.msc, and in some versions of Windows it is known as System Monitor.
Questions tagged [perfmon]
198 questions
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Different Process Names in PerfMon for the same PID
I am trying to confirm a behavior I am seeing or am looking for help in identifying my problem.
When using Performance Monitor to collect data on multiple instances of the same process, the same instance name is associated with different PIDs.…

Tim P
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Unable to open the Performance Logs and Alerts configuration
I'm trying to set up some perfmon logging on our server and I get this message in the event log
"Unable to open the Performance Logs and Alerts configuration. This configuration is initialized when you use the Performance Logs and Alerts Management…

David Hayes
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Perfmon counters are not restarted after reboot
The question has a long history, and I went through all previous questions (1, 2) but neither of them answers the question why the standard way doesn't work? If I don't want to use logman how can I schedule automatic restart of counters/data…

Suncatcher
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Perfmon % Processor Time vs. task manager's CPU usage
I'm new to using Perfmon and performance monitoring in general (so go easy on me please ;)
I know that Perfmon doesn't have anything exactly like Task Manager's CPU usage display, but I'm trying to figure out how to monitor user's CPU usage via…

nat
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Performance monitor logs are not getting generated on windows Server 2008 R2
On Windows Server 2008 R2 and windows Server 2012 Standard machines:
I have added the Data Collector set in Performance monitor.
I scheduled it for 4 hours
Seems that the task is being started as the folder is getting created but the log reports…

Neeta
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ASP.NET Performance Counters Temporarily Drop To Zero
Having some performance issues with a VM Image (I do not have access to the VM Host, only the guest OS).
Trying to determine why there are periods of time ranging from 10-60 seconds where the server just stops pushing out any requests.
In doing…

Andrew Krock
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Resource Monitor not showing expected disk read activity
Hi I have the following query.
I am running a meteor web server on a windows 2008 R2 VM machine.
Am trying to run a performance test on the web server.
I have an automated script to access a folder on the server via the web gui, then download a 2GB…

sethy
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Performance counter to show real IIS response time
What performance counter should I use to display current average IIS response time? ASP.NET counters correctly show the time spent in ASP.NET, but real latency is much bigger, which is confirmed by IIS logs and ab tool.
In more detail, ASP.NET…

ovolko
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Automatically start Windows Server 2003 Perfmon counter log upon reboot
Trying to figure out how to make sure a specific Windows Perfmon Counter Log resumes logging automatically when the server is rebooted.
This is a Windows 2003 Server, so likely won't have anyone logging on to it immediately upon reboot. I saw this…

BradC
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Remote Perfmon Is Super Slow
I'm trying to use perfmon to monitor some servers, but adding counters is excruciatingly slow. Each click freezes the window for tens of seconds. How can I speed this up?

John Tseng
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Task Manager Processor %
Related to this question: How can a Perfmon "% Processor Time" counter be over 100%?
I was manually observing processes in Task Manager when a user reported a problem and the Oracle process was using 80%-95% for a sustained period of time (5-15…

Cade Roux
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Why aren't custom performance counters being recorded by my PerfMon data collector set?
I have six custom performance counters that were created by a .NET app. When I open Performance Monitor and add them to the live view, those counters are displayed correctly. I can see the values I expect in the live graph.
I created a user defined…

Josh Yeager
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Windows 2008 R2: Perfmon, multiple data collection sets, it is possible
I'm trying to set up some performance monitoring on our web servers.
I thought it would make sense to have 2 separate data collection sets, one with counters for the hardware and OS and another for web information (.net performance, connections…

Snowburnt
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How do I run perfmon against a remote machine?
For starters I'm trying to do this from a Windows 7 box to a Windows 7 box.
I know the simple answer should be to enter \\computername where it says "Select Counters From Computer". Trouble is, every time I do that I get an error message that says…

WindyCityEagle
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Windows equivalent performance counters in Linux with Sysstat (or similar)
I administer a range of both Windows and Linux servers. On the Windows servers, I have the following performance counters logging every 15 seconds to a CSV file:
Bottleneck analysis:
Processor Queue Length
Memory: Pages Input/Sec (rate at which…

ervingsb
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