Re: Possible performance problems.

[Neil Palmer <NPalmer@xxxxxxxxxxx>]

Viv Bassani wrote:
> 
> A strange thing occured last weekend. We restored an 8Gb library
> on a 50S #2122 @ V3R7M0 using an 8mm cart. formatted to *FMT5GB
> and data saved @ V3R1M0. This restore took 5 hours without access paths
> and 15 hours with access paths. We then performed the same restore on
> a F45 @ V3R1M0 and the restore took 5.5 hours with access paths. All
> the restores were submitted to batch with no other system activity
> occuring on the system and plenty of system memory. Has anyone else
> come across these problems on either a RISC or Server model ?
> 

Not a problem.  Restoring a V3R1 lib to a RISC machine you are doing
object/release conversion on the library.  Restoring back to a V3R1 box
the system doesn't need to make any changes, therefore it restores
quicker.
To do a fair test of restore time comparisons, now that the library is
on the V3R7 machine, save it to tape (with the default TGTRLS(*CURRENT)
for V3R7), delete it, and restore it again.
Now compare those times to the restore of the V3R1 save on a V3R1
machine.

-- 
... Neil Palmer                                      AS/400~~~~~      
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