Re: [HTCondor-users] change spool file location from the local administration machine to a network one

[Greg Thain <gthain@xxxxxxxxxxx>]

On 03/25/2013 09:37 AM, Rich Pieri wrote:
> --On March 25, 2013 9:10:57 AM -0500 Christopher Harrison 
> <harrison@xxxxxxxxxxxxxxxx> wrote:
>
> > I might recommend a SSD for the submit machine's "spool" area.   I have
> > experienced extremely fast io access, reduced latency and improved
> > throughput just by installed the ssd's.   Just one item you might 
> > want to
> > consider.

Note that, depending on your job mix, the HTCondor submit "spool" area 
can get kind of big, maybe bigger than your SSD.  If you can't fit the 
whole spool on SSD, much of the benefit can still be gained by just 
putting the job_queue.log file there.  This is the file that the 
scheduler uses as the persistent store, and is fsync'ed very frequently, 
so it is very latency-sensitive. JOB_QUEUE_LOG is the name of the config 
parameter.

-greg