That's the problem with us now ...we don't see significant difference from the logs .
When one device is varied offline , it gets processed instantly When vary is issued against a set of devices (may be 10 ) , we see a delay of 15 to 20 seconds . But our storage person keeps complaining that vary commands are processed slow . I believe , it is because there are so many backup jobs failing from last few months compared to earlier . For eg , we had an abend yesterday where STEP 1 issues a vary command against a set of volumes . And STEP 2 runs an ICKDSF to init the volume . It fails saying the volume is not offline . Looking at CMDS display , we don't see anything queued up for long . Nothing was changed in the system recently . On Sun, Apr 20, 2014 at 9:35 AM, Lizette Koehler <[email protected]>wrote: > How did you determine they are slow. > > How long do you think they should take? > How long would it normally take? > How long does it now take? > How many devices are in the vary command at one time? > > What analysis have you done to determine "slow" > > What timings do you get when you vary one device compared to 10 compared > to 100? > > Do you see any error messages indicating the commands are not processing? > > Have you issued the CMDS command to see what is going on at the same time > as the slow commands? > > > Lizette > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:[email protected]] On > > Behalf Of baby eklavya > > Sent: Saturday, April 19, 2014 8:54 PM > > To: [email protected] > > Subject: Slow vary commands processing > > > > Greetings , > > > > In our shop , we see that vary commands are processed slow most of the > time . We > > have not applied any maintenance recently and there are no messages or > dumps > > which actually tell us why this happen . Can someone share some > possibilities in > > general when this can happen ? > > > > We are running z/os 1.11 on a Z196 processor with DS8800 boxes . > > > > Regards, > > baby > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
