I don't know what run.log is.
Where is it located? Maybe it is a logfile of your application or configuration !?
It's located in \bin folder.
The command line "call run.bat < .r.lock >> run.log 2>&1" in service.bat append all standard's out and error to run.log file.
I would like to rotate or limit size of that file.
If you don't need the console output you should remove the appender CONSOLE from the logging configuration