Re: CPU Spikes completely hangs sessions;No logons: need inputs
Amit, In addition, if you are running a single JES2 in your SYSPLEX you can display other LPARS in the SDSF "DA" display using the "SYSNAME sysid" line command. Alternatively you can use the ISPF Table based RMF II display to monitor the other LPARS in your SYSPLEX by simply overtyping the System ID in the upper right hand corner with the one you want. Depending on your installation you can typically get to this (far superior) version of RMF II with the command ERBRMF, or TSO ERBRMF, and then follow the menus. This is feature is enabled by XCF and does not require a parallel SYSPLEX, but you do need a MAS for the DA SYSNAME to work. I regularly use the RMF II feature in a four system GRS ring. Ron > -Original Message- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of > Terry Draper > Sent: Monday, September 06, 2010 7:21 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: [IBM-MAIN] CPU Spikes completely hangs sessions;No logons: need > inputs > > Amit. > Firstly you should have RMF monitor III setup so that it can see the > address spaces in all the LPARs in the Sysplex. Make sure RMF address spaces > are at high priority. You can then see who is getting the CPU and how much the > LPAR is using. > > Have the TSO userids of selected (trusted not to abuse the priority) > performance people set to a single period high priority service class. > Alternatively you can get someone reset to a high priority at problem times. > > It is useful to have some TSO users stay logged on nearly all the time. Not > sure of the best options to achieve this. > > Terry Draper > zSeries Performance Consultant > w...@btopenworld.com > mobile: +66 811431287 > > --- On Mon, 6/9/10, amit wrote: > > > From: amit > Subject: CPU Spikes completely hangs sessions;No logons: need inputs > To: IBM-MAIN@bama.ua.edu > Date: Monday, 6 September, 2010, 11:59 > > > hi, > > i have come across similar times where in my services/STCs demand a lot of > CPU and thus resulting soft capping. > some times even when msu's are being increased, via system tools though Ops > can see that my stcs are taking more CPU, i am unable to logon to the > LPAR..so are other users. > is there a way that i can monitor/ view the STC of the affected LPAR from a > diff one, in sysplex. > secondly, how do i prioritize my TSO ID in that LPAR so that it may logon > and check/action to trap the issue. > > My questions might sound foolish or/and inappropriate, but can assure, are > not just for Fun. > eager to learn, if possible some help/experience shared. > > TIA, > Amit > > -- > 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 -- 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: CPU Spikes completely hangs sessions;No logons: need inputs
Amit. Firstly you should have RMF monitor III setup so that it can see the address spaces in all the LPARs in the Sysplex. Make sure RMF address spaces are at high priority. You can then see who is getting the CPU and how much the LPAR is using. Have the TSO userids of selected (trusted not to abuse the priority) performance people set to a single period high priority service class. Alternatively you can get someone reset to a high priority at problem times. It is useful to have some TSO users stay logged on nearly all the time. Not sure of the best options to achieve this. Terry Draper zSeries Performance Consultant w...@btopenworld.com mobile: +66 811431287 --- On Mon, 6/9/10, amit wrote: From: amit Subject: CPU Spikes completely hangs sessions;No logons: need inputs To: IBM-MAIN@bama.ua.edu Date: Monday, 6 September, 2010, 11:59 hi, i have come across similar times where in my services/STCs demand a lot of CPU and thus resulting soft capping. some times even when msu's are being increased, via system tools though Ops can see that my stcs are taking more CPU, i am unable to logon to the LPAR..so are other users. is there a way that i can monitor/ view the STC of the affected LPAR from a diff one, in sysplex. secondly, how do i prioritize my TSO ID in that LPAR so that it may logon and check/action to trap the issue. My questions might sound foolish or/and inappropriate, but can assure, are not just for Fun. eager to learn, if possible some help/experience shared. TIA, Amit -- 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
Re: CPU Spikes completely hangs sessions;No logons: need inputs
thanks Barbara..and i totally agree with you in term so tools reset. however and more of the same reason, to concentrate on my own STC activity...anything i can do, logged from a diff LPAR. does RMF/SYSVIEW provide interface to see STC details ?> On Mon, Sep 6, 2010 at 5:32 PM, Barbara Nitz wrote: > >however, if i wanted to browse/see through the > >JESYSMSG/sysprint of the STC, when i am unable to logon to the affected > >LPAR(session HUNG due to high CPU. > > If you cannot logon, use the operator reset command to reset your TSO > userid > into SYSSTC. That may (or may not) allow you to logon. Every other tool you > are going to use in a cpu starved environment will also need it's > dispatching > priority adjusted by resetting it into a higher service class. Keep in mind > that > you may not even be aware which tools need to be reset, depending on > *where* (i.e. in which address space) the code for a command executes > (example: If VTAM and/or TCPIP don't get enough cpu, they cannot show you > the output from the tool you have just used). > > Also keep in mind that resetting something into a higher service class > distorts > the results. > > Regards, Barbara Nitz > > -- > 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
Re: CPU Spikes completely hangs sessions;No logons: need inputs
>however, if i wanted to browse/see through the >JESYSMSG/sysprint of the STC, when i am unable to logon to the affected >LPAR(session HUNG due to high CPU. If you cannot logon, use the operator reset command to reset your TSO userid into SYSSTC. That may (or may not) allow you to logon. Every other tool you are going to use in a cpu starved environment will also need it's dispatching priority adjusted by resetting it into a higher service class. Keep in mind that you may not even be aware which tools need to be reset, depending on *where* (i.e. in which address space) the code for a command executes (example: If VTAM and/or TCPIP don't get enough cpu, they cannot show you the output from the tool you have just used). Also keep in mind that resetting something into a higher service class distorts the results. Regards, Barbara Nitz -- 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: CPU Spikes completely hangs sessions;No logons: need inputs
missed some queries, sorry: What is you z/OS system (z/OS V1.???) and what kind of mix are you running on this system we are on V1.11 currently. reg to the RMF PLEX option, can you let me know which options.how would i know RMF is setup to view all in a PLEX? cheers, Amit On Mon, Sep 6, 2010 at 5:20 PM, amit wrote: > thanks Lizette. > yes we have sysview, which helps to track whether they are related to my > STCs. > I handle a product named ObjectStar(TIBCO)..very old name HURON,3 layered > s/w similar to DB2, but i find it much powerful, quite rare in today > installations too. > > Anyhow, in general terms, sysview or system tools like RMF would help me to > track which all STCs however, if i wanted to browse/see through the > JESYSMSG/sysprint of the STC, when i am unable to logon to the affected > LPAR(session HUNG due to high CPU)..is there a way via SDSF commands from > one LPAR to view/browse the same of a diff LPAR?.. > > > > When you say OPS can see your stcs spiking, which ones are they talking > about? > I meant the Operations team via thier consoles which are mostly > solve/sysview...or they would have been already logged on to the LPAR SDSF, > so can sort the CPU in DA option. > > > > > > On Mon, Sep 6, 2010 at 4:54 PM, Lizette Koehler > wrote: > >> > amit wrote: >> > hi, >> > >> > i have come across similar times where in my services/STCs demand a lot >> of >> CPU and thus resulting soft capping. some times even when msu's are being >> increased, via system tools though >> ? Ops can see that my stcs are taking more CPU, i am unable to logon to >> the >> LPAR..so are other users. is there a way that i can monitor/ view the STC >> of the affected LPAR from a diff one, >> ? in sysplex. secondly, how do i prioritize my TSO ID in that LPAR so >> that >> it may logon and check/action to trap the issue. My questions might sound >> foolish or/and inappropriate, but >> ? can assure, are not just for Fun. eager to learn, if possible some >> help/experience shared. >> >> >> Do you have any monitoring tools like Omegamon, Tmon, Sysview, or >> Mainview? >> >> >> Do you have RMF setup to view all systems in the Plex? >> >> These would be the best tools to look at for seeing what is spiking in >> your >> system. >> >> Also, it will depend on you software levels. What is you z/OS system >> (z/OS >> V1.???) and what kind of mix are you running on this system? Is it DB2, >> CICS, batch, TSO, Application Development or Production or Sandbox? >> >> When you say OPS can see your stcs spiking, which ones are they talking >> about? >> >> These will help guide you to determine how best to view this situation. >> >> Lizette >> >> -- >> 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
Re: CPU Spikes completely hangs sessions;No logons: need inputs
thanks Lizette. yes we have sysview, which helps to track whether they are related to my STCs. I handle a product named ObjectStar(TIBCO)..very old name HURON,3 layered s/w similar to DB2, but i find it much powerful, quite rare in today installations too. Anyhow, in general terms, sysview or system tools like RMF would help me to track which all STCs however, if i wanted to browse/see through the JESYSMSG/sysprint of the STC, when i am unable to logon to the affected LPAR(session HUNG due to high CPU)..is there a way via SDSF commands from one LPAR to view/browse the same of a diff LPAR?.. When you say OPS can see your stcs spiking, which ones are they talking about? I meant the Operations team via thier consoles which are mostly solve/sysview...or they would have been already logged on to the LPAR SDSF, so can sort the CPU in DA option. On Mon, Sep 6, 2010 at 4:54 PM, Lizette Koehler wrote: > > amit wrote: > > hi, > > > > i have come across similar times where in my services/STCs demand a lot > of > CPU and thus resulting soft capping. some times even when msu's are being > increased, via system tools though > ? Ops can see that my stcs are taking more CPU, i am unable to logon to the > LPAR..so are other users. is there a way that i can monitor/ view the STC > of the affected LPAR from a diff one, > ? in sysplex. secondly, how do i prioritize my TSO ID in that LPAR so > that > it may logon and check/action to trap the issue. My questions might sound > foolish or/and inappropriate, but > ? can assure, are not just for Fun. eager to learn, if possible some > help/experience shared. > > > Do you have any monitoring tools like Omegamon, Tmon, Sysview, or Mainview? > > > Do you have RMF setup to view all systems in the Plex? > > These would be the best tools to look at for seeing what is spiking in your > system. > > Also, it will depend on you software levels. What is you z/OS system (z/OS > V1.???) and what kind of mix are you running on this system? Is it DB2, > CICS, batch, TSO, Application Development or Production or Sandbox? > > When you say OPS can see your stcs spiking, which ones are they talking > about? > > These will help guide you to determine how best to view this situation. > > Lizette > > -- > 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
Re: CPU Spikes completely hangs sessions;No logons: need inputs
> amit wrote: > hi, > > i have come across similar times where in my services/STCs demand a lot of CPU and thus resulting soft capping. some times even when msu's are being increased, via system tools though ? Ops can see that my stcs are taking more CPU, i am unable to logon to the LPAR..so are other users. is there a way that i can monitor/ view the STC of the affected LPAR from a diff one, ? in sysplex. secondly, how do i prioritize my TSO ID in that LPAR so that it may logon and check/action to trap the issue. My questions might sound foolish or/and inappropriate, but ? can assure, are not just for Fun. eager to learn, if possible some help/experience shared. Do you have any monitoring tools like Omegamon, Tmon, Sysview, or Mainview? Do you have RMF setup to view all systems in the Plex? These would be the best tools to look at for seeing what is spiking in your system. Also, it will depend on you software levels. What is you z/OS system (z/OS V1.???) and what kind of mix are you running on this system? Is it DB2, CICS, batch, TSO, Application Development or Production or Sandbox? When you say OPS can see your stcs spiking, which ones are they talking about? These will help guide you to determine how best to view this situation. Lizette -- 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
CPU Spikes completely hangs sessions;No logons: need inputs
hi, i have come across similar times where in my services/STCs demand a lot of CPU and thus resulting soft capping. some times even when msu's are being increased, via system tools though Ops can see that my stcs are taking more CPU, i am unable to logon to the LPAR..so are other users. is there a way that i can monitor/ view the STC of the affected LPAR from a diff one, in sysplex. secondly, how do i prioritize my TSO ID in that LPAR so that it may logon and check/action to trap the issue. My questions might sound foolish or/and inappropriate, but can assure, are not just for Fun. eager to learn, if possible some help/experience shared. TIA, Amit -- 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
