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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: Jane Curry <jane.curry@skills-1st.co.uk>
Date: Wed, 25 Apr 2007 17:04:21 +0100
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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
> > Chase, Taplow, Bucks, SL6 0EU, UK.
> > Registered in England & Wales, Company No. 3458854.
> > Tel: +44 (0)1628 782565
> > Copyright (c) 2007 Jane Curry <jane.curry@skills-1st.co.uk>. 
> > All rights
> > reserved.
> >
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Copyright (c) 2007 Jane Curry <jane.curry@skills-1st.co.uk>.  All rights 
reserved.

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