On 5 Feb 2008 13:52:49 -0800, in bit.listserv.ibm-main
(Message-ID:<[EMAIL PROTECTED]>)
[EMAIL PROTECTED] (Tom Harper) wrote:
About 10% of the CPU was consumed by IEBGENER
It's amazing how inefficient IEBGENER is. If you
were to change all[1] use of IEBGENER jobs to use ICEGENER
(or SYNCGENR) or to an in-house-written copy program, you
could reduce the CPU consumed in copies by a factor of 5 to
10. It reduces both CPU and wall-clock time.
[1] The alternate programs generally work only for the case
where there's no SYSIN control statements for IEBGENER. In
my experience, there is only a very small percentage of
IEBGENER jobs with SYSIN.
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