Re: Vmtune question SOLVED. What is NaNQ%?

From: Mills, John T (9814) (John.T.Mills_at_ERAC.COM)
Date: 12/28/04

  • Next message: JOSEPH KREMBLAS: "Re: Vmtune question SOLVED. What is NaNQ%?" 
    Date:         Tue, 28 Dec 2004 14:55:22 -0600
To: aix-l@Princeton.EDU

    Yes it appears to be an oddity. The do support the tools (vmtune,
    schedtune, wlmtune), but, they do not support the new configuration of
    your AIX box after using the tools. Any deviation for the standard
    performance settings is a billable call for instance.

    John T. Mills

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    JOSEPH KREMBLAS
    Sent: Tuesday, December 28, 2004 2:30 PM
    To: aix-l@Princeton.EDU
    Subject: Re: [aix-l] Vmtune question SOLVED. What is NaNQ%?

    IBM puts vmtume in bos.adt.samples because as the README file says and
    IBM support says, that it's NOT a supported product and is provided to
    the customer as a "courtesy".--unless, of course, things have changed
    within IBM, which I think not.

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Mills, John T (9814)
    Sent: Tuesday, December 28, 2004 1:00 PM
    To: aix-l@Princeton.EDU
    Subject: Re: Vmtune question SOLVED. What is NaNQ%?

    I'm not sure of the reasoning, but, it's been there as long as I can
    remember. The developer's samples fileset is home to several of the
    tuning binaries.

    John T. Mills

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Andrew Townsend
    Sent: Tuesday, December 28, 2004 1:08 PM
    To: aix-l@Princeton.EDU
    Subject: Re: [aix-l] Vmtune question SOLVED. What is NaNQ%?

    Initially, I was reading
    http://www.mppmu.mpg.de/computing/AIXuser/xlf-fltrap.html which refers
    to fortran on AIX. A quote from there says "It is default on AIX that an
    invalid floating-point number given as NaNQ (Not A Number) and the
    program continues running without any exception handling." which scared
    the heck out of me. So I did an lppchk ?v to see if I was missing
    something that may affect the output. As it turns out, my version of
    bos.adt.samples was back-level. I was at 5.1.0.35. I upgraded it to
    5.1.0.55, rebooted, and it was all good. I could make the necessary
    changes at the command line, and make them permanent in the inittab. Why
    bos.adt.samples? The which_fileset command said it resides there. Why
    would IBM put the vmtune command in bos.adt.samples?

                          Holger.VanKoll@SW
                          ISSCOM.COM To:
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                          Sent by: IBM AIX cc:
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    question. What is NaNQ% ?
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                          12/28/2004 01:07
                          PM
                          Please respond to
                          IBM AIX
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    i dont know what the q means, some further distinction here is a bit
    stuff about that:
    http://www.unm.edu/cirt/introductions/aix_xlfortran/xlflrm26.htm

    afaik means as far as i know,
    http://www.geocities.com/SouthBeach/Lagoon/9819/acronyms.html

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    JOSEPH KREMBLAS
    Sent: Tuesday, December 28, 2004 6:38 PM
    To: aix-l@Princeton.EDU
    Subject: Re: Vmtune question. What is NaNQ% ?

    What does 'afaik' mean?

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Holger.VanKoll@SWISSCOM.COM
    Sent: Tuesday, December 28, 2004 9:47 AM
    To: aix-l@Princeton.EDU
    Subject: Re: Vmtune question. What is NaNQ% ?

    nan means "not a number", inf (afaik) = infinitive

    you should check if your vmtune is correct for you os/kernelversion

    -----Original Message-----
    From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
    Andrew Townsend
    Sent: Tuesday, December 28, 2004 7:39 AM
    To: aix-l@Princeton.EDU
    Subject: Vmtune question. What is NaNQ% ?

    I am trying to change a few of the tuning parameters on our AIX5.1 ML3
    p660 running in 64bit mode for the dba. When I view the current settings
    using vmtune (and/or vmtune64), I see a value for numclient as NaNQ%.
    What does this mean?

    number of valid memory pages = 3145712 maxperm=INF% of real memory
    maximum pinable=80.0% of real memory minperm=INF% of real memory
    number of file memory pages = 0 numperm=NaNQ% of real memory
    number of compressed memory pages = 11127 compressed=INF% of real
    memory
    number of client memory pages = 0 numclient=NaNQ% of real memory
    # of remote pgs sched-pageout = 0 maxclient=INF% of real memory

    When I try to change the settings for maxclient using vmtune, it also
    goes into a NaNQ%. If I then try to change the maxperm and minperm, they
    go into a NaNQ% and the system hangs and requires a hard reboot. The dba
    recomended the settings for minperm=2% and maxperm=3%. This box is
    running the database only and no other applications.

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