If you enter IND USER ZOSONE EXP, you will get the vtime and ttime in days, hours, minutes. The "normal" ind user resets the counters after 999:59 (min:sec) to zero.
Check the difference with the values of the ind-user-exp-command. Franz Josef Pohlen ----- Original Message ----- From: "William Boyer" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, October 17, 2005 1:43 PM Subject: Re: Performance of zOS guest. The following is from the Performance Toolkit from z/VM 5.1. It shows a difference between TCPU and VCPU as 3.66 seconds, which I assume is the CP overhead. I watched this for a few minutes this morning and I can see the difference stays between 3 and 4 seconds. Userid %CPU TCPU VCPU Ratio Total DASD Avoid Diag98 UR Pg/s User Status >System< 1.14 .681 .631 1.1 4.9 4.8 .0 .0 .0 .0 ---,---,--- ZOSONE 84.3 50.60 46.94 1.1 368 364 .0 .0 .0 .0 EME,CL3,DIS ZOSTWO 4.49 2.695 2.561 1.1 3.7 3.3 .0 .0 .0 .0 EME,CL3,DIS After I copied the above I did a IND USER ZOSONE and notice the difference between VTIME and TTIME. USERID=ZOSONE MACH=ESA STOR=1000M VIRT=V XSTORE=NONE IPLSYS=DEV 0764 DEVNUM=00265 PAGES: RES=00255997 WS=00255997 LOCK=00000003 RESVD=00000000 NPREF=00000000 PREF=00000000 READS=00000001 WRITES=00002553 XSTORE=000003 READS=000071 WRITES=000074 MIGRATES=000000 CPU 00: CTIME=06:38 VTIME=088:05 TTIME=274:56 IO=296239 RDR=000000 PRT=006680 PCH=000000 Is VTIME the VM overhead in minutes and seconds? Is that included in TTIME? If so the overhead of VM from the IND USER is over 30%. The ZOSONE machine was last IPL'd (logged on) on Wednesday October 12th around 9 PM. William L. Boyer Senior IT Consultant / Senior Systems Programmer Business and Technology Services One West Pennsylvania Ave. ? Suite 700 ? Baltimore, MD 21204 Office: 410.832.8300 ext. 8419 ? Fax: 410.832.8329 www.emdeon.com/vips This message is confidential, intended only for the named recipient(s) and may contain information that is privileged or exempt from disclosure under applicable law. If you are not the intended recipient(s), you are notified that the dissemination, distribution, or copying of this message is strictly prohibited. If you receive this message in error or are not the named recipient(s), please notify the sender at either the fax address or telephone number above and delete this message. Thank you. -----Original Message----- From: VM/ESA and z/VM Discussions [mailto:[EMAIL PROTECTED] Behalf Of Bill Bitner Sent: Thursday, October 13, 2005 4:04 PM To: [email protected] Subject: Performance of zOS guest. William Boyer <[EMAIL PROTECTED]> writes: It really depends on the tools and which SMF records are used as to the accuracy of the information. > >QUESTION: How much better would the zOS perform in it's own LPAR? = >Currently we seem to be CPU constrained. >Can we still share the zOS DASD back to zVM in READ mode on zVM? It depends. If you look at the performance data from VM, most tools report a total cpu for the guest and virtual cpu time (there are places that virtual is called emulation tim). The difference between the two values is CP time. A safe approximation is that when run in an LPAR without VM, you'll save the CP time. Bill Bitner - VM Performance Evaluation - IBM Endicott - 607-429-3286
