Author: sa2000
Subject: VMMap 3.11 crashes soon after launching process
Posted: 15 March 2014 at 8:40pm
Edited by sa2000 - 6 hours 18 minutes ago at 8:42pm
Subject: VMMap 3.11 crashes soon after launching process
Posted: 15 March 2014 at 8:40pm
 Olegas wrote:I may have misunderstood what you are trying to accomplish. UMDH is great for tracking down WHERE memory allocations are coming from, not necessarily IF you have a leak. It uses debug symbols to present you with an allocation stack, which helps you pinpoint where a given leak comes from. More info about symbols and symbol path here and here. UMDH isn't going to be very helpful with 3rd party app for which you don't have debug symbols, but it will give you general allocation statistics when you compare several snapshots. If you are trying to determine IF there is a leak, perfmon and Process Explorer may be a better choice when you graph memory utilization over time. |
I suspect there is a memory leak or may be fragmentation (and i am saying this without really knowing much about memory handling) - but i do know that after a few large fetch data queries to the app the 'Private Data' gets very high - over 1Gb and later the app maxes at 2Gb total memory allowed for 32-bit apps. What happens early on - way before it gets to the 2Gb max, the app Exceptions of 'Bad Allocation' messages logged and over time it then gets to point where it fails to start new threads and later crashes out.
I want to try to help the developers by at least identifying the routines that lead to the Private Data jumping up so i thought i would use VMMap to launch the app and get the info on Private Data allocations and at point and what stack frame led to it increasing so much. I am helping out because no one else reported the problem and it is probably to do with the way i am using the 3rd party app.
Edited by sa2000 - 6 hours 18 minutes ago at 8:42pm