> how do you measure the performance..?
For the PC instruction, performance is simply a curiosity and doesn't really
matter. The alternatives are SVC and SSI. The benefits of PC far outweigh any
possible savings by using SVC. The SSI is a special use case.
As for measuring performance, is there any possible metric that would be
meaningful and useful? Do you ignore some instruction options? Do you include
OS support routines that are included after the instruction complete's (e.g.
SVC interrupt handler).
Jon..
On Thursday, August 29, 2019, 05:19:04 AM PDT, scott Ford
<idfli...@gmail.com> wrote:
Peter,
This begs a question for me how do you measure the performance..?
What I am seeing via the post and understanding performance matters even
with the faster Z processors.
Scott
On Thu, Aug 29, 2019 at 7:45 AM Peter Relson <rel...@us.ibm.com> wrote:
> <snip>
> You can do a BASR and STORAGE OBTAIN, STORAGE RELEASE and BR in less time
> than a BAKR.
> </snip>
>
> No you can't.
>
> <snip>
> How does its performance stack up against SVC?
> </snip>
>
> That's not a useful comparison. What is useful is "how does its
> performance stack up against SVC plus the SVC interrupt handler".
>
> Peter Relson
> z/OS Core Technology Design
>
>
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