> On Mar 11, 2016, at 3:14 PM, Simon Templar <stemp...@opposedtwin.com> wrote:
>> On Mar 10, 2016, at 11:09 PM, Kern Sibbald <k...@sibbald.com> wrote: >> >> I have not tried this, but one thing that may help a lot is to turn on >> data spooling for the tape device. This will probably not speed up the >> process but should prevent that tape shoe-shine (start and stopping). > > > In my case using spooling didn’t prevent shoe-shining; it just introduced > long pauses while data was spooled. I think all this means is that I can read > from my data sources faster than my tape can write. > > So far the only change I made to help with shoe-shining was to set Max File > Size to a large number (mine is now set to 20g, after first trying 3gb then > 5gb). This one change alone is probably responsible for most of the > performance increase that I’ve been able to achieve thus far. I’d like to > test and tune more, but I’m still wrestling with things like tape mount > timeouts (no 3rd shift operators), job run time timeouts, etc… I have this set to about 375GB Maximum Spool Size = 375809638400 Maximum Job Spool Size = 375809638400 -- Dan Langille - BSDCan / PGCon d...@langille.org
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