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  • 1.  Why xmwlm ?

    Posted Thu May 24, 2007 10:33 AM

    Originally posted by: ccompton


    When upgrading from AIX 5.2 to 5.3 TL5, a new program was setup to run in /etc/inittab: xmdaily:2:once:/usr/bin/xmwlm -L 2>&1 >/dev/null.

    I can see it is collecting performance statistics; but what was it installed for and is there any downside to stopping the xmwlm process, if I'm not interested in its stats?

    #AIX-Forum


  • 2.  Re: Why xmwlm ?

    Posted Thu May 24, 2007 11:08 AM

    Originally posted by: orphy


    Take a look at section 5.3.2 of this and decide if you should keep it or not.
    To me, it probably doesn't hurt unless it create unexpected issues.

    http://www.redbooks.ibm.com/abstracts/SG247414.html?Open
    Orphy
    #AIX-Forum


  • 3.  Re: Why xmwlm ?

    Posted Thu May 24, 2007 04:47 PM

    Originally posted by: ClusterBuster


    Hello.

    Reference APAR IY91836. There is no patch available yet. I've seen this problem mainly on DB LPARs with lots of SAN attached disk.

    There's a bug in xmwlm where it will consume excessive CPU in some circumstances. What's excessive? Howabout a constant 10-15% of a single CPU. This daemon was already in AIX, and apparently turned on by default in TL05.

    I comment this inittab line out in all new installs. You can kill the daemon. This is the 'local fix' recommended in the APAR.

    Regards, Jon
    #AIX-Forum


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