performancewindows-server-2008dumpcrash-dumpsprocdump
Creating a dump file is excruciating slow
Brief
Creating a dump file using any of the following methods is way to slow (> 2 minutes) to be usable for our current scenario.
procdump -ma notepadprocdump notepad- Open task-manager, select notepad, create dump file
Does anyone have any idea
- what might be causing this
- how to possibly speed this up
Edit: some extra information
- Using procexp and looking at the call stack dumping notepad, it seems to be taking 100% cpu of one core in a method from dbghelp:
dbghelp.dll!MiniDumpReadDumpStream+0x241a
fortunatly, we tried this first with notepad
Background
We are trying to create a dumpfile on a first-chance exception of a critical application with as minimal impact as possible. The application should not get suspended for more than a few seconds.
Solution
In the end, this turned out to be related to the combination of our AV and a specific dbghelp.dll version.
Tested combinations
- AV Enabled with dbghelp version 6.0 is way to slow
- AV Disabled with dbghelp version 6.0 is no problem
- AV Enabled with dbghelp version 6.3 is no problem
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