Periodic switching of the event file can weaken the performance of mbatchd, which automatically backs up and rewrites the events file after every 1000 batch job completions. The old lsb.events file is moved to lsb.events.1, and each old lsb.events.n file is moved to lsb.events.n+1.
MAX_JOB_NUM specifies the number of batch jobs to complete before lsb.events is backed up and moved to lsb.events.1. The default value is 1000
MIN_SWITCH_PERIOD controls how frequently mbatchd checks the number of completed batch jobs
The two parameters work together. Specify the MIN_SWITCH_PERIOD value in seconds.
For large clusters, set the MIN_SWITCH_PERIOD to a value equal to or greater than 600. This causes mbatchd to fork a child process that handles event switching, thereby reducing the load on mbatchd. mbatchd terminates the child process and appends delta events to new events after the MIN_SWITCH_PERIOD has elapsed. If you define a value less than 600 seconds, mbatchd will not fork a child process for event switching.