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RE: [NV-L] Reporting NetView process threads with NetView ITM age nt

To: "'Tivoli NetView Discussions'" <nv-l@lists.ca.ibm.com>
Subject: RE: [NV-L] Reporting NetView process threads with NetView ITM age nt
From: REIBENSCHUH Alfred <alfred.reibenschuh@it-austria.com>
Date: Fri, 27 Apr 2007 09:48:55 +0200
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with that:

http://people.redhat.com/drepper/assumekernel.html


C
--
fredo

> -----Original Message-----
> From: Jane Curry [mailto:jane.curry@skills-1st.co.uk]
> Sent: Wednesday, April 25, 2007 6:04 PM
> To: Tivoli NetView Discussions
> Subject: Re: [NV-L] Reporting NetView process threads with NetView ITM
> age nt
>
>
> Hmmm,
> I have a 2.6 kernel but I also have an environment variable
> LD_ASSUME_KERNEL=2.4.1  set.  Where does that leave me?
> Cheers,
> Jane
>
> REIBENSCHUH Alfred wrote:
> >
> > the statement below is only true for the 2.4.x seriers of kernels.
> >
> > 2.6.x kernels have "true portable posix threads".
> >
> > C
> >
> > --
> > fredo
> >
> > > -----Original Message-----
> > > From: Paul Campbell [mailto:Paul.Campbell@orb-data.com]
> > > Sent: Wednesday, April 25, 2007 12:24 PM
> > > To: Tivoli NetView Discussions
> > > Subject: RE: [NV-L] Reporting NetView process threads
> with NetView ITM
> > > agent
> > >
> > >
> > > Jane,
> > >
> > > This is normal behaviour running a java application under
> > > Linux and has
> > > nothing to do with Netview itself as per Sun's (SDN)
> comments below:
> > >
> > > "Under Linux, threads are implemented using the clone()
> system call.
> > > This creates a new process which can share memory space, file
> > > descriptors and signal handlers.  This means each thread
> which Java
> > > creates appears as a separate process which will show up in
> > > ps.  This is
> > > normal."
> > >
> > > You should see one master pid and several child pids
> depending on the
> > > no. of threads.
> > >
> > > Cheers
> > >
> > > -----Original Message-----
> > > From: nv-l-bounces@lists.ca.ibm.com
> > > [mailto:nv-l-bounces@lists.ca.ibm.com] On Behalf Of Jane Curry
> > > Sent: 25 April 2007 10:50
> > > To: NetView mailing list
> > > Subject: [NV-L] Reporting NetView process threads with
> > > NetView ITM agent
> > >
> > > NetView 7.1.5 on SuSE 9 Linux.
> > > One of the out-of-the-box views that you get with the ITM
> > > NetView Agent,
> > > shows the number of threads per process.
> > >
> > > I had always thought that some of the NetView processes are
> > > multi-threaded - largely the Java based ones so, webserver,
> > > snmpserver,
> > > servmon, maptreeserver.  If you do a ps -ef listing on a
> SLES 9 system
> > > then you apparently get lots of processes showing for
> each of these
> > > daemons, rather than several threads, whereas on an AIX
> > > system you tend
> > > to see a single process.  Can anyone clarify this for me???
> > >
> > > Going on from that, the ITM NetView agent is reflecting what
> > > I see in ps
> > > - lots of processes for these daemons on a SLES 9 system.
>  I'd much
> > > rather see a single process with several threads.  Any
> suggestions???
> > >
> > > Many thanks,
> > > Jane
> > >
> > > --
> > > Tivoli Certified Consultant & Instructor Skills 1st
> Limited, 2 Cedar
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> > > Tel: +44 (0)1628 782565
> > > Copyright (c) 2007 Jane Curry <jane.curry@skills-1st.co.uk>.
> > > All rights
> > > reserved.
> > >
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