Re: Convert CPU time to MSUs
Please correct the formula in my previous email to: The MSUS provided in a second could be: MSU_SEC = MSU_HOUR / (ENGINES * 60 * 60)* FACTOR Thanks -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
Hal Merritt wrote: > SU_SEC = SU_HOUR / (ENGINES * 60 * 60) >Not quite, I think. You don't get the full 60 seconds for each additional >engine. Better: >SU_SEC = SU_HOUR / ((ENGINES * 60 * 60)*FACTOR) >Where FACTOR is less than 1.0. thank you all for your replies, Our machine type is 2097-605. My college gave me a way to calculate the factor of formula SU_SEC = SU_HOUR / ((ENGINES * 60 * 60)*FACTOR) by dividing SU_SEC of 2097-205/ SU_SEC 0f 2097-601. Can we say that the above division give us the requested value? According to SRM constants table:2097-601 gives 32989.6907 SU/SEC and 2097-605: 28469.7509 Could the factor be 28469.7509/32989.6907= 0,863 ? Kind regards Kostas Zafiropoulos -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
My shop using the RMF overview report to calculate the workload utilization APPLER% (defined in report class) 2012/5/11, Tom Marchant : > On Tue, 8 May 2012 08:33:18 -0500, K Zafirop > wrote: > >>We would like to convert CPU seconds copnsumed by an address space in 1 >> hour (CPUSECs) to Service Units (SU). > > > Here is how SHOWMVS calculates SU/Second: > > * > *Service units per second (using RMCTADJC) > * > *Source: IRARMCPU module in SYS1.NUCLEUS(IEAVNP10) > * > HARD20 L R6,WKCELL3 restore CPU noRS0101 > L R3,=F'1600' 16,000,000 > M R2,=F'1'10K > L R14,CVTOPCTPRESOURCE MANAGER CONTROL TABLE > D R2,RMCTADJC-RMCT(,R14) adjustment factor for CPU > CVD R3,WKCELL3 R3=SU*1 > MVC WORK256(11),=X'4020202020214B20202020' 9. > EDWORK256(11),WKCELL3+3 EDIT > STRING ' This system can deliver',(WORK256,11), X >' service units per second',X >INTO=LINE > > -- > Tom Marchant > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
On Tue, 8 May 2012 08:33:18 -0500, K Zafirop wrote: >We would like to convert CPU seconds copnsumed by an address space in 1 hour >(CPUSECs) to Service Units (SU). Here is how SHOWMVS calculates SU/Second: * *Service units per second (using RMCTADJC) * *Source: IRARMCPU module in SYS1.NUCLEUS(IEAVNP10) * HARD20 L R6,WKCELL3 restore CPU noRS0101 L R3,=F'1600' 16,000,000 M R2,=F'1'10K L R14,CVTOPCTPRESOURCE MANAGER CONTROL TABLE D R2,RMCTADJC-RMCT(,R14) adjustment factor for CPU CVD R3,WKCELL3 R3=SU*1 MVC WORK256(11),=X'4020202020214B20202020' 9. EDWORK256(11),WKCELL3+3 EDIT STRING ' This system can deliver',(WORK256,11), X ' service units per second',X INTO=LINE -- Tom Marchant -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
Some experimentation for plausible ranges of FACTOR values strongly suggests that this computation should be done with an appropriate mean in each specific context. My suggestion of a table was thus a more valuable one than I realized when I made it. John Gilmore, Ashland, MA 01721 - USA -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
On Thu, 10 May 2012 10:55:42 -0400, John Gilmore wrote: >Factor is in fact a decreasing function of ENGINES. It drops off in a >moderately but clearly convex way with increasing values of ENGINES. >You need a table of the form You could derive such a table from the charts on https://www-304.ibm.com/servers/resourcelink/lib03060.nsf/pages/srmindex?OpenDocument . Or you could use the SU/second information for your processor from the tables. Or you could get the factor from the SRM control block that contains it. Search the MVS bookshelf for SERVICE UNIT and you will find several hits. The IRARMCTZ looks promising. SHOWMVS is another possible resource. -- Tom Marchant -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
Factor is in fact a decreasing function of ENGINES. It drops off in a moderately but clearly convex way with increasing values of ENGINES. You need a table of the form ENGINES(1) = 1 ENGINES(2) = . . . . . . ENGINES(n) = . . . There is a recent SHARE presentation that contains such a table. Unhelpfully, I cannot remember its title or who gave it. John Gilmore, Ashland, MA 01721 - USA -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
Hal Merritt wrote: > SU_SEC = SU_HOUR / (ENGINES * 60 * 60) >Not quite, I think. You don't get the full 60 seconds for each additional >engine. Better: >SU_SEC = SU_HOUR / ((ENGINES * 60 * 60)*FACTOR) >Where FACTOR is less than 1.0. You are right of course. Could you be kind to please post any documentations or links about that 'FACTOR'? Just curious if you don't mind please. Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
SU_SEC = SU_HOUR / (ENGINES * 60 * 60) Not quite, I think. You don't get the full 60 seconds for each additional engine. Better: SU_SEC = SU_HOUR / ((ENGINES * 60 * 60)*FACTOR) Where FACTOR is less than 1.0. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of K Zafirop Sent: Tuesday, May 08, 2012 8:33 AM To: IBM-MAIN@bama.ua.edu Subject: Convert CPU time to MSUs Hello all We would like to convert CPU seconds copnsumed by an address space in 1 hour (CPUSECs) to Service Units (SU). Our machine has 5 engines. Is it true that we have available 18000 CPU seconds? SU = CPUSECs * SU_SEC where SU_SEC = SU_HOUR / (ENGINES * 60 * 60) Where SU_HOUR is the number of our machine available Service Units per Hour and SU_SEC is the equivalent Service units /sec factor. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Convert CPU time to MSUs
On Tue, 8 May 2012 08:33:18 -0500, K Zafirop wrote: >We would like to convert CPU seconds copnsumed by an address space in 1 hour >(CPUSECs) to Service Units (SU). The system performs this calculation. Are you sure you want to do it yourself? >Our machine has 5 engines. Is it true that we have available 18000 CPU seconds? yes >SU = CPUSECs * SU_SEC so far, so good >where > >SU_SEC = SU_HOUR / (ENGINES * 60 * 60) Service units per second for processors is documented in the Initialization and Tuning Guide. The latest information is at https://www-304.ibm.com/servers/resourcelink/lib03060.nsf/pages/srmindex?OpenDocument . If you are using advertised MSU to compute SU/second, you will not get good results. I don't remember which control block contains the CPU/second value that SRM uses. Also beware that if you make dynamic changes for the processor, such as with capacity on demand, the SU/second value will change. SRM is aware and its calculations of SU usage are adjusted accordingly. -- Tom Marchant -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Convert CPU time to MSUs
Hello all We would like to convert CPU seconds copnsumed by an address space in 1 hour (CPUSECs) to Service Units (SU). Our machine has 5 engines. Is it true that we have available 18000 CPU seconds? SU = CPUSECs * SU_SEC where SU_SEC = SU_HOUR / (ENGINES * 60 * 60) Where SU_HOUR is the number of our machine available Service Units per Hour and SU_SEC is the equivalent Service units /sec factor. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
