I want to have a small batch script which runs on a server and every hour logs memory statistics. I already have the script log the process-specific info I want via other tools, but I want to know of a way (either directly on cmd or via a program) which will output the total committed memory of the system. In other words, I think the commit charge total statistic in the Task Manager is what I want to know, but via the command line:

Alexander Bird

Posted 2013-06-26T17:29:33.930

Reputation: 1 697

Answers

You can instantiate and use the Win32_PerfFormattedData_PerfOS_Memory class for this via VBScript:

Set wmiObject = GetObject("winmgmts:\\.\root\cimv2:Win32_PerfFormattedData_PerfOS_Memory=@")
Wscript.Echo "CommitLimit  (B): " & wmiObject.CommitLimit
Wscript.Echo "CommitLimit (MB): " & (wmiObject.CommitLimit / 1048576)
Wscript.Echo "CommittedBytes  (B): " & wmiObject.CommittedBytes
Wscript.Echo "CommittedBytes (MB): " & (wmiObject.CommittedBytes / 1048576)

Save with a name like GetMem.vbs and invoke using cscript //Nologo GetMem.vbs. The class can also be used via the wmic command as mentioned below, although of course a script provides you much more flexibility.

Karan

Posted 2013-06-26T17:29:33.930

Reputation: 51 857

Hi!). CommitLimit not a Commit Charge Peak – STTR – 2013-06-26T18:22:30.663

1@STTR: He wants Commit Charge Total. Isn't that the same as CommittedBytes? The values certainly seem to match on my PC. – Karan – 2013-06-26T18:42:48.300

1http://blog.whatsupduck.net/2010/05/querying-peak-commit-bytes-with.html it not : wmic path Win32_PerfFormattedData_PerfOS_Memory get CommittedBytes, CommitLimit – STTR – 2013-06-26T18:51:23.813

@STTR: That blog post you linked to agrees with me. CommittedBytes is Commit Charge Total. Neither the OP nor I mentioned Commit Charge Peak, so I honestly fail to see what the problem is. – Karan – 2013-06-26T18:59:43.210

Plz, see test script. – STTR – 2013-06-26T19:24:45.800

@STTR: Thanks a lot though for reminding me of the wmic command. Somehow I always turn to VBS/WSH first and forget about that. – Karan – 2013-06-26T19:26:08.480

wmic path Win32_PerfFormattedData_PerfOS_Memory get CommittedBytes, CommitLimit

Test script ...

These values may be equal so long until RAM exhaustible (CommitLimit and PeakCommitment*(page size))

enter image description here

Peak ...

Querying Peak Commit Bytes with Powershell (via NtQuerySystemInformation)

enter image description here

STTR

Posted 2013-06-26T17:29:33.930

Reputation: 6 180

1The OP wants Total, not Peak. I must confess I still don't see what you're driving at. – Karan – 2013-06-26T19:27:47.733

@Karan Well, OP wanted to Peak). It is best to use perfmon and save the results in a database. Let the OP will clarify the question) – STTR – 2013-06-26T19:48:16.887

1Karan is correct. It is currently the total (not peak) I am interested in. Also, I would add a link to that article in your answer so others know what you're referring to when you use the "PeakCommitment.ps1" command in your screenshots – Alexander Bird – 2013-06-26T20:16:30.217

@AlexanderBird script at Querying Peak Commit Bytes with Powershell (via NtQuerySystemInformation) article – STTR – 2013-06-26T20:22:01.630

How do I obtain Windows command line report of total committed memory (commit charge)?

Answers

Peak ...