Thanks, I've seen that, but as I recall the implications were subtle and not documented. But this does seem to document it.
I surmise that the best performance is using ECT=YES and would result in no branch at all, but it would depend on the programmer knowing that the "Extract CPU Time" facility was present, but you could check that once during initialization. Kirk On Thu, Feb 3, 2011 at 2:42 PM, Edward Jaffe <edja...@phoenixsoftware.com>wrote: > On 2/3/2011 12:34 PM, Kirk Wolf wrote: > >> On a related matter: I seem to remember that there is a way to use >> TIMEUSED >> so that it has *significantly* less overhead, which would be important for >> a >> "profiler" use case. I'm not sure, but I recall that it has something to >> do with BRANCH= and ECT=. >> >> If anyone knows the details on this, I would appreciate any info. >> > > http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/iea2a4a0/22.1.6 > > -- > Edward E Jaffe > Phoenix Software International, Inc > 831 Parkview Drive North > El Segundo, CA 90245 > 310-338-0400 x318 > edja...@phoenixsoftware.com > http://www.phoenixsoftware.com/ > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
