The default value is 3. Users can still see all done jobs after they are already finished using the bjobs command. Once the limit is reached, the mbatchd switches the event log file, lsb.events to lsb.events.1 . If lsb.events.1 exists, the old lsb.events.1 is renamed to lsb.events.2 and so on. That is, the sequence numbers of all backup logs are incre- mented by one.
Event logging then continues using the file lsb.events .
This parameter is meaning- ful only if a fairshare queue or a host partition is defined. The value of this parameter can be anywhere from 0 to an arbitrarily large number. When 0 is specified, the history CPU time is not considered. This parameter is used to prevent the case in which a batch job gets suspended and resumed too often as it causes high paging rates while running and low while suspended. If you are not concerned with the interference to interactive jobs caused by paging, the value of this parameter may be set to 0 seconds.