On 9/19/2014 4:56 AM, Peter Relson wrote:
I also recommend MODE=HOME for PVTMOD=
In general, you should try to use ASID and/or JOBNAME if you are going to
use MODE=HOME. This avoids unnecessary space-switch interrupts (and their
processing). Without ASID/JOBNAME, space-switches must be monitored for
all address spaces.
Makes sense. I've always wondered why MODE=HOME was not the default,
since I've had so much trouble over the years getting PER IF traps with
PVTMOD= to match without it and 98% of code running on z/OS (my own SWAG
estimate) executes with HASID = PASID = SASID.
I've also always wondered why RGN was not part of default SDATA for the
MVS DUMP command, since without it most dumps can't be properly
analyzed. Is there an equally logical explanation for that?
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
http://www.phoenixsoftware.com/
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