W dniu 2015-02-19 o 07:45, Sheldon Davis pisze:
Hi
I am out of ideas.
We converted a set of sequential files to be extended and changed the ACS 
routine to put the files on model 54's
The following is what happened:

1. Jobs that allocated the files took more CPU and ran much longer.
2. The catalog address space used about four times more CPU than usual and did 
a huge amount of I/O on the disks that the batch job used to allocate and 
update the files.

Thanks for any input

Check SMS compression.
Check blocksize, leave it to default.

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