Does Standalone Dump use the same formula? Is it smart enough to understand CP control blocks, or does it just dump all of storage?
Dennis There are 10 kinds of people in the world; those that understand binary and those that don't. -----Original Message----- From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of John Franciscovich Sent: Wednesday, August 09, 2006 14:25 To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] z/VM 5.2 Dumps I posted this as part of another discussion several months ago: "Dumps will be larger in 5.2.0, and can be larger than 2 GB due to the increased size of the frame table and other control structures. But it will not be as large as the amount of storage you might have on your system. The rule of thumb is to allow twice as much space for dumps in 5.2.0 than you did in 5.1.0." There is a more detailed (new) explanation of how to estimate the amount of space you'll need for dumps in Chapter 20 of the z/VM 5.2.0 CP Planning and Administration manual, under heading "Allocating Space for CP Hard Abend Dumps". John Franciscovich z/VM Development >Ah, but the dump only includes CP storage and not that belonging to the >users. That was the reasoning behind the statement, again IIRC.=20 > >Regards, >Richard Schuh > > >> -----Original Message----- >> From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] >> Behalf Of David Boyes >> Sent: Wednesday, August 09, 2006 11:50 AM >> To: IBMVM@LISTSERV.UARK.EDU >> Subject: Re: z/VM 5.2 Dumps >>=20 >>=20 >> Most obvious reason is that 5.2 now dumps more than 2G. 4.4=20 >> only dumped >> the 1st 2G regardless of how much real storage was there.=20 >>=20 >> David Boyes >> Sine Nomine Associates >>=20 >> > -----Original Message----- >> > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] >> On >> > Behalf Of Schuh, Richard >> > Sent: Wednesday, August 09, 2006 2:31 PM >> > To: IBMVM@LISTSERV.UARK.EDU >> > Subject: z/VM 5.2 Dumps >> >=20 >> > IIRC, there was a discussion, either at SHARE or in this forum, in >> which >> > it was stated that dumps of z/VM 5.2 would not be=20 >> significantly larger >> > than those from what were then the current systems (mine was 4.4). >> Would >> > somebody like to recant? Our dumps are much, much larger.=20 >> When I used >> > VMARC to compress a 5.2 dump, it is reduced to approximately 18% of >> its >> > former size. That compressed dump is larger than the uncompressed >> dumps I >> > used to get from 4.4. Same h/w, same everything except for VM CP. >> >=20 >> > Regards, >> > Richard Schuh >> >=20 >> >=20 >>=20
