> I have been reviewing the data for private and am puzzled with what I see. > The data from PROD taken with SYSVIEW is as follows; > > Region Start > End Length Bytes Used > RONUC 00000000_00FE3000 00000000_00FFFFFF 00000000_0001D000 116K 113K > RWNUC 00000000_00FD4000 00000000_00FE2FFF 00000000_0000F000 > 60K 55.9K > SQA 00000000_00EB5000 00000000_00FD3FFF 00000000_0011F000 1.12M > 502K > PLPA 00000000_00C98000 00000000_00EB4FFF 00000000_0021D000 2.11M > 2.11M > FLPA 00000000_00000000 00000000_00000000 00000000_00000000 > 0 0 > MLPA 00000000_00000000 00000000_00000000 00000000_00000000 > 0 0 > CSA 00000000_00800000 00000000_00C97FFF 00000000_00498000 > 4.59M 791K > PVT 00000000_00006000 00000000_007FFFFF 00000000_007FA000 > 7.98M 655K > RCT 00000000_00002000 00000000_00005FFF 00000000_00004000 > 16K n/a > PSA 00000000_00000000 00000000_00001FFF 00000000_00002000 > 8K n/a > > From Parmlib; > > CSA=(4100K,150M) > SQA=(384K,24M) > > According to this map, the system has allocated about 200+K more for SQA > and about 500K more for CSA. Everything aligns on the 8M boundary > and this is fine in production. > > However, in DR we lost a meg and private dropped to 7M. Given that more > than half of SQA is unused and only a fraction of CSA is used, my > expectation is that there was ample storage to accommodate a bigger I/O > configuration and still stay with the 8M boundary. The big assumption is > that my problem in DR was the I/O configuration. Whatever increased in DR > had to be pretty large is my thinking. > > Many of you stated how important it was to define CSA to fall around a 1/2M > boundary. Our CSA allocation of 4.1M takes common to around the 7.33M mark > leaving private with 8M. How does this look to you? > > The CSA allocation seems to be unnecessarily large and I can't explain it > as I am new to the shop. That however is a separate issue.
The first thing I would do, using a dump of PROD and a dump of DR, is for each dump, under IPCS, do IOSCHECK ALLUCBS FIND 'UCB AT 00' ALL This will count the number of UCBs in SQA below 16MB. 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
