> -----Original Message----- > From: The IBM z/VM Operating System > [mailto:[EMAIL PROTECTED] On Behalf Of Gentry, Stephen > Sent: Monday, May 19, 2008 12:44 PM > To: IBMVM@LISTSERV.UARK.EDU > Subject: zVM and the SPOOL file > > How does zVM store data in it's spool file? More specifically, > in VSE/Power, a decision had to be made as to the block size of the > Power data file (spool file). If you made the block size small, you > utilized space better for small entries but you'd get an increase in > I/O. If you used large block sizes, you reduced I/O but lost space. > For example, if you submitted JCL, say 3 or 4 cards, they > would occupy a > whole block. A small report or items in the punch queue > worked the same > way. (I haven't worked with VSE in a loonnngg time so this may have > changed.) > I was wondering how zVM stored data in it's spool file. I > don't recall > specifying a block size specifically for the spool size. > Thanks, > Steve >
IIRC, it uses 4K "pages" just like the paging subsystem. In fact, it may use the same logic. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it.
