![]() Note: The output might differ with different versions of windbg 0:000> !address -summary Open the memory dump in Windbg (File/Open Crash Dump) and run the command !address –summary If you got a memory dump of the process but “forgot” to create a perfmon log with the counters described above, you can find out from the memory dump where the memory is used. Getting memory usage info from a dump file If however # Bytes in all heaps is pretty moderate you should continue reading from step 2 and on. net, have a look through some of the other posts on debugging memory issues to check into how to troubleshoot them. Once you have this performance log you can now compare these values and specifically compare the trend and amounts for Private Bytes and #Bytes in all heaps to see if your memory leak is native (non. The counter log will now be running, collecting data (shows up as green in the counter logs view) but you can start and stop it at any time.(This is important if you are logging for w3wp.exe for example as some counters are only available when you run the log as an admin) Once you have added the counters, fill in the name of an administrator in the Run As: box and fill out the password.The best way to make sure you get the instance counters, rather than _Total and _Global is to choose All instances Click “Add Counters” and choose the counters above.Under Performance Logs and Alerts, right-click Counter Logs and choose New Log Settings, give it a name and click ok.Open perfmon (Performance under Administrative Tools).You can create such a log file by following these steps This is not entirely accurate if you want to be a nitpicker about what Private Bytes really means, but it is accurate enough for the purposes of troubleshooting a memory issue. Simplified, Virtual Bytes is the memory that the process reserves, Private Bytes is how much of that the memory that the process actually uses and #Bytes in all Heaps is how much of the Private Bytes goes to memory stored on the. ![]() The best way is probably to use performance monitor and collect a log over the lifetime of the process that is leaking with at least the following counters for the specific process (note that _total or _global counters are not very helpful here) Using perfmon to determine where your memory is going There are various ways to find out if your memory usage is mostly. Find out if your memory usage / leak is mostly. Look at the main allocators and the stacks associated with the biggest chunks of allocations to determine who is making the allocations and why the memory is not released.ġ.If it is native memory that is “leaking”, use a tool like debug diag 1.1.Find out if your memory usage / leak is mostly.Recently I was helping out on such a case and this post details both generally how you go about troubleshooting these issues as well as what troubleshooting steps we went through in this particular case.Įssentially you would go through these steps to troubleshoot a native memory leak: In other words, cases where you have high memory usage in your application but you can see that. ![]() I often get questions about debugging native memory leaks. Debugging Native memory leaks with Debug Diag 1.1
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