How to Check In a User Dump That Full Page Heap Was Enabled

Summary

Technical Support may ask customers to enable full page heap on specific Citrix executable files such as ImaSrv.exe to troubleshoot heap corruption issues.

However, customers sometimes think they have enabled full page heap, but in fact they did not.

Technical Support needs to check that the user dump sent was generated when full page heap was enabled.

Procedure

Open WinDbg.
Verify that File\Symbol File Path… dialog contains the path to Microsoft Symbol Server:

srv*c:\symdownstream*http://msdl.microsoft.com/download/symbols

Open the dump and execute the following command:

!gflag

Check the output:

     0:001> !gflag
     Current NtGlobalFlag contents: 0x02000000
         hpa - Place heap allocations at ends of pages

More Information

CTX104633 – How to Enable Full Page Heap for the IMA Service