Re: zIIPs and TCP/IP usage
I think one of the points about IPSec is that it is an EMERGENT technology - in the sense that many sites aren't using it YET. So I regard its zIIP support to be an ENABLER. Might be time - in many shops - to exploit IPSec because of this. (And, static the OBVIOUS, you won't see anything via the PROJECTCPU mechanism for workloads you aren't running yet.) :-) Martin Martin Packer, Mainframe Performance Consultant, zChampion Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- 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
Re: zIIPs and TCP/IP usage
W dniu 2011-03-19 11:38, Martin Packer pisze: I think one of the points about IPSec is that it is an EMERGENT technology - in the sense that many sites aren't using it YET. So I regard its zIIP support to be an ENABLER. Might be time - in many shops - to exploit IPSec because of this. (And, static the OBVIOUS, you won't see anything via the PROJECTCPU mechanism for workloads you aren't running yet.) :-) That's obvious. However, how can I see what tasks are using zIIP? All the zIIP usage peaks (in my environment) are related to DB2 utils running, but maybe there are other zIIP exploiters which consume few zIIP cycles, maybe I'm not aware of some of them. g -- Radoslaw Skorupka Lodz, Poland -- BRE Bank SA ul. Senatorska 18 00-950 Warszawa www.brebank.pl Sd Rejonowy dla m. st. Warszawy XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, nr rejestru przedsibiorców KRS 025237 NIP: 526-021-50-88 Wedug stanu na dzie 16.07.2010 r. kapita zakadowy BRE Banku SA (w caoci wpacony) wynosi 168.248.328 zotych. -- 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
Re: zIIPs and TCP/IP usage
Hello Radoslaw if you have a tool to analyze SMF (e.g. SAS/MXG) you can check which address spaces are using the zIIP by looking at the SMF30_TIME_ON_ZIIP field in SMF 30 records. If not, you can run a RMF Monitor I Workload Activity report. Using the SYSRPTS(WLMGL(SCPER)) ommand you can check which service classes are using the zIIP. Using the SYSRPTS(WLMGL(RCPER)) ommand you can check which report classes are using the zIIP. Best regards Fabio At 12.05 19/03/2011, you wrote: W dniu 2011-03-19 11:38, Martin Packer pisze: I think one of the points about IPSec is that it is an EMERGENT technology - in the sense that many sites aren't using it YET. So I regard its zIIP support to be an ENABLER. Might be time - in many shops - to exploit IPSec because of this. (And, static the OBVIOUS, you won't see anything via the PROJECTCPU mechanism for workloads you aren't running yet.) :-) That's obvious. However, how can I see what tasks are using zIIP? All the zIIP usage peaks (in my environment) are related to DB2 utils running, but maybe there are other zIIP exploiters which consume few zIIP cycles, maybe I'm not aware of some of them. g -- Radoslaw Skorupka Lodz, Poland -- BRE Bank SA ul. Senatorska 18 00-950 Warszawa www.brebank.pl Sd Rejonowy dla m. st. Warszawy XII WydziaGospodarczy Krajowego Rejestru Sdowego, nr rejestru przedsibiorców KRS 025237 NIP: 526-021-50-88 Wedug stanu na dzie16.07.2010 r. kapitazakadowy BRE Banku SA (w caoci wpacony) wynosi 168.248.328 zotych. -- 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 + + Fabio Massimo Ottaviani + EPV Technologies Technical Director + Skype: fabio.massimo.ottaviani + + IT Cost under Control + www.epvtech.com + P Please consider the environment - do you really need to print this email? -- 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
zIIPs and TCP/IP usage
Right now I am looking at zIIPs and zAAPs planning for some new z196s. One area of interest is I read zIIPs can offload some of my TCP/IP work. What are people seeing as what is being offloaded within TCP/IP and how much. Just from a high level is this any load of significance I could expect or is it relatively low. Say for instance I did not have any DB2 or XML, then has anyone just got the zIIP because of TCP/IP. I am discounting JAVA workload out of the picture to keep away from the discussion of doing zIIPzAAPs and combining the two. So just for the sake of this discussion say I have no JAVA workload either. Be interested in others actual experiences. jim -- 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
Re: zIIPs and TCP/IP usage
The books say All SRB-based processing in stack can be done on a zIIP, depending on what level of zOS If you are doing IPSEC (SSL encryption), you will be using a lot of CPU time in stack. It could justify zIIP or two to offload the IPSEC work Steve Finch -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Jim Marshall Sent: Friday, March 18, 2011 8:07 PM To: IBM-MAIN@bama.ua.edu Subject: zIIPs and TCP/IP usage Right now I am looking at zIIPs and zAAPs planning for some new z196s. One area of interest is I read zIIPs can offload some of my TCP/IP work. What are people seeing as what is being offloaded within TCP/IP and how much. Just from a high level is this any load of significance I could expect or is it relatively low. Say for instance I did not have any DB2 or XML, then has anyone just got the zIIP because of TCP/IP. I am discounting JAVA workload out of the picture to keep away from the discussion of doing zIIPzAAPs and combining the two. So just for the sake of this discussion say I have no JAVA workload either. Be interested in others actual experiences. jim -- 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
