There is a recent apar for SDSF performance, but it's in the H, O displays for a large number of jobs. OA25498<https://www-304.ibm.com/ibmlink/psp/viewAparDoc.wss?context=apar&documentIds=OA25498&lc=en&cc=US>
SDSF H display at z/OS 1.9 is slow. Starting at 1.9, SDSF uses the Extended Status SSI call to gather the display data. Dump and trace analysis shows that for the extended status SSI call, STATOUTT request in IAZSSST with jobname filter shows extensive processing retrieving JQAs for each job before applying filters, particularly jobname filter. The overhead of DOGJQE read is driven for every job in the system before filters such as jobname are applied which may not need the full JQA. This results in an inefficient extended status request. MA On Tue, Feb 3, 2009 at 9:41 AM, Thompson, Steve <steve_thomp...@stercomm.com > wrote: > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of Gerry Anstey > Sent: Tuesday, February 03, 2009 5:25 AM > To: IBM-MAIN@bama.ua.edu > Subject: SDSF - so slow! > > <SNIP> > > My questions are: > > 1. Any ideas why SDSF takes appox 90 minutes (120000 EXCPs + 31mins CPU) > to > read and write out the data and Filemaster takes about 3 minutes to read > 25million recs and write about 1.5million? > > 2. Is there any way to make SDSF extract faster? > > <SNIP> > > I think you are talking about a problem that I brought to IBM's > attention about a year ago now. > > I'm going to paraphrase what was said: The more people complain, the > faster it will get fixed because management will take more notice. > > So, perhaps opening a PMR against SDSF for performance issues in reading > the spool files would be in line. > > Regards, > Steve Thompson > > -- Opinions expressed by poster may not be the opinions of poster's > employer -- > > ---------------------------------------------------------------------- > 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
