Windows – PerfMon Counters missing

perfmonwindows 7

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 Control
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Unable to add these counters:

\Memory\Available MBytes
\Memory\% Committed Bytes In Use
\Memory\Cache Faults/sec
\Memory\Cache Faults/sec
\PhysicalDisk(*)\% Idle Time
\PhysicalDisk(*)\Avg. Disk Queue Length
\Network Interface(*)\Bytes Total/sec
---------------------------
OK   
---------------------------

The Groups "Memory", "Physical Disk" don't exist, and no other groups that contain such counters.

Running perfon with domain admin credentials gives the same results.

I'd like to have my counters back 🙂
(I especially need memory and disk)

Best Answer

In order to rebuild the performance monitors you have to run

lodctr /r (in your command line)

More details here

Related Solutions

Windows – What’s the difference between Processor and Processor Information in PerfMon counters

The difference is only relevant on a machine with more than one NUMA node. On such machines, the processors in "Processor Information" are identified by their NUMA node and their number within the node. For example, if you have two nodes with four processors each, then "Processor information" would enumerate them as

0,0
0,1
0,2
0,3
1,0
1,1
1,2
1,3

The first number of each pair is the NUMA node number. "Processor Information" also provides pseudo-instances that give node-specific totals (0,_Total and 1,_Total for the preceding example).

In "Processor" the processors are simply numbered serially and there is a single system-wide _Total instance, no matter how many NUMA nodes there are.

A NUMA machine these days would normally use one of the modern point-to-point interconnects (QPI or HyperTransport) and would have more than one physical CPU socket. In these platforms, each CPU socket is its own NUMA node, with its own set of DIMM slots.

So, why do they have both? If all you care about is the info from each processor there is no difference; you can get that from either group. But being able to easily identify CPU usage within the NUMA nodes is important in some performance tuning scenarios. The NUMA-node-wide totals are particularly valuable as they make it easy to figure out if the OS's scheduler is doing the right thing for you (either keeping all of your related processes together on one NUMA node... or not, whichever you would prefer).

On the vast majority of consumer and business machines you have just one physical CPU socket ("CPU package") and regardless of how many cores it has it is all just one NUMA node with one set of RAM shared by all of the cores, so the "Processor information" group will not show you anything different from the "Processor" group. NUMA machines are almost exclusively the province of servers and high-performance workstations.

FYI, here is a data sheet on a dual-socket NUMA motherboard. You can clearly see how the RAM sockets are physically associated with the respective CPU sockets.

Best Answer

Related Solutions

Windows – What’s the difference between Processor and Processor Information in PerfMon counters

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