This delay offline processing for a nano second or less would that have any impact ?
Sent from my iPhone On Sep 11, 2013, at 8:43 PM, Jim Mulder <d10j...@us.ibm.com> wrote: >>> With disablement, you can guarantee that your processor will not be >>> interrupted between fetching the address and accessing it >> >> You can not, however, be guarntied that another processor won't change >> anything. What happens if z/OS is in the middle of taking the other >> CPU offline? > > CPU Offline processing turns off the CSD alive bit, and zeros the > PCCAVT and LCCAVT entries for the CPU that is going offline. Then > a Bind Break is done, and this does not complete until every other > CPU has enabled at least once. After that, the LCCA, PCCA, and PSA > can be freed. So if you disable, and then fetch a non-zero address > for a PCCA from the PCCAVT or LCCA from the LCCAVT, the PCCA, LCCA, > and associated PSA will not be freed as long as you remain disabled. > > > Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
