问题：运行场景后，提示“Abnormal termination, caused by mdrv process termination”，服务端没有挂，仍可正常访问，且在运行场景时，没有自动重启。找下了，网上的答案如下：
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
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'.
Replay the script with think time.
Turn off extended log when running the script in the controller.
Do not use the controller itself as the loadgenerator. i.e. have a remote LoadGenerator.
Introduce iteration pacing, if running more than one iteration each vuser.
Open the file loadrunner installation\config\wlrun7.ini in a text editor, modify the entry from: AgentMaxThreadsPerDriver=50 to AgentMaxThreadsPerDriver=20 or 10
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.
Run vusers as process instead of threads.Please go to Runtime Settings > Miscellaneous > Multithreading > RunVuser as a process.