Default FILE_TRANSFER_DISK_LOAD_THROTTLE is 2.0 which is pretty conservative,
we tried a value of 10.0 but that seemed to cause the submit node to lose
connection with the NFS host so we settled on the moderate value of 5.0.
Set JOB_START_DELAY to 5
This makes sure no two jobs start within 5s of each other. This staggering
is helpful to avoid overwhelming the shared data storage location.
Maximum number of jobs kept in any single schedulers history is 10000
This is the default set by HTCondor and means we should keep our clusters of jobs to less than 10k so we can inspect them via the history.