Abnormal termination, caused by mdrv process termination问题解决办法

Abnormal termination, caused by mdrv process termination

Hi, Users facing this mdrv process abnormal termination can try one of these options found from one of the LR articles. The Loadrunner vusers are run by a process called 'mdrv.exe'. Whenever this process encounters errors due to various reasons it may terminate. Some of the possible reasons are as follows

1. The Host machine ( Load generator) is running too many Vusers as a result of which it system resources are being maximized. ( i.e. Consistent over 90% CPU and Memory utilization). The mdrv process does not get enough resources to process the request as a result it fails
2. If you have Custom C coding, there is a possibility of allocated memory not being freed or memory violation errors which can lead to 'mdrv process termination'.
3. Replay the script with think time.
4. Turn off extended log when running the script in the controller.
5. Do not use the controller itself as the loadgenerator. i.e. have a remote LoadGenerator.
6. Introduce iteration pacing, if running more than one iteration each vuser.
7. Open the file C:/WinNT/wlrun7.ini in a text editor, modify the entry from: AgentMaxThreadsPerDriver=50 to AgentMaxThreadsPerDriver=20 or 10
8. Run Agent as process instead of service Launch command prompt and navigate to C:/Program Files/Mercury/Loadrunner/Launch_service/bin and run the command magentserive -remove. This will remove the agent. Now run the command magentproc -install This will install the agent as a process.
9. Run vusers as process instead of threads.Please go to Runtime Settings > Miscellaneous > Multithreading > RunVuser as a process.