Re: [linuxtools-dev] UPDATE: Re: OProfile + Linux Tools + CentOS

[Severin Gehwolf <sgehwolf@xxxxxxxxxx>]

On Thu, 2011-08-04 at 18:05 -0400, Jeff Johnston wrote:
> On 08/04/2011 01:02 PM, Eric Schwarz wrote:
> 
> >>>>  Did you verify that oprofile works as expected on the command line?
> >
> > YES.  I did it like onhttp://blogs.epfl.ch/article/24223
> >
> > I also tried with the latest nightly build today>  did not work either
> >
> >
> > I executed both
> >
> > - install.sh
> >
> > - install-noconsolehelper.sh
> >
> >
> 
> Firstly, you don't want to run both scripts.  The script creates an 
> executable called opcontrol in the Eclipse Oprofile core 
> natives/linux/scripts directory.  This binary is used by the OProfile 
> plug-in.
> 
> The first script creates a link opcontrol -> /usr/bin/consolehelper 
> whereas the 2nd creates an opcontrol script which uses sudo to run 
> /usr/bin/opcontrol.  If you run the 2nd script after the first, you will 
> wipe out the results of the first and end up with the sudo solution.
> 
> I verified on an F14 VM that the install.sh works and the opcontrol 
> binary runs ok (queries the root password).
> 
> However, as the blog you refer to notes: performance events don't work 
> because the performance counters aren't supported.  You get back "No 
> data" under Eclipse.  I get this result under my F14 VM using Fedora 
> VirtManager both from the command line and Eclipse.
> 
> Following the blog's advice and switching to timer mode caused me to get 
> a failure under Eclipse when it attempted to specify a performance 
> counter event.
> 
> "You cannot specify any performance eventsbecause Oprofile is in timer mode"
> 
> There was no way to specify no events as un-clicking everything under 
> the Profile Configurations Events tab disables the Apply and Profile 
> buttons.
> 
> Unless I missed something, I think you are forced to use the command 
> line and specify timer mode when running under a VM to get anything 
> other than no data.

Eric, if you run install.sh only on a clean install and on a physical
machine you should definitely be able to use oprofile from within
Eclipse. Make sure that you have the usermode RPM package installed.

--Severin

> > Am 04.08.2011 15:00, schrieb Severin Gehwolf:
> >>  Hi,
> >>
> >>  On Thu, 2011-08-04 at 10:59 +0200, Eric Schwarz wrote:
> >>>  Hi
> >>>
> >>>
> >>>  I have troubles starting OProfile (0.9.4 latest Version for CentOS) out
> >>>  of Eclipse on CentOS.
> >>>
> >>>  I have tried using CentOS 5.4 + Eclipse Helios 2 SR2 in a virtual
> >>>  machine (put in timer interrupt mode like described in [1]).
> >>  Eclipse oprofile hasn't worked very well in a virtual machine and is not
> >>  tested very much. It may work, if the module is manually loaded with
> >>  timer=1 prior profiling from within Eclipse...
> >>
> >>  Did you verify that oprofile works as expected on the command line? If
> >>  yes, what sequence of commands did you execute to make it work?
> >>
> >>>  The error is the following when clicking on "Profile As>   Profile with
> >>>  OProfile" in the Eclipse menu:
> >>>
> >>>  "Exit code of opcontrol indicates failure"
> >>>
> >>>  OProfile itself is working and I also executed
> >>>  "natives/linux/scripts/install.sh"
> >>  Does this mean that if you use opcontrol in a terminal profiling works
> >>  for you? If yes, what is the sequence of commands you are executing?
> >>
> >>>  I have also seen some irregularities concerning the unittests of Linux
> >>>  Tools 0.8.0 for OProfile support.
> >>>
> >>>  https://hudson.eclipse.org/hudson/job/linuxtools-Indigo/346/testReport/
> >>  Last time I checked all unit tests passed for me locally. I think we
> >>  can't run oprofile tests in the hudson job since it requires root access
> >>  and proper installation of consolehelper/no-consolehelper (for the time
> >>  being). Perhaps I'm wrong :)
> >>
> >>>  I also tried on a real machine (CentOS 5.6 + Eclipse Indigo) and there I
> >>>  get also an error (I think it was the same on - I might deliver the
> >>>  message later since I am currently at an other place).
> >>  It should definitely work on a physical machine. Could you try
> >>  installing latest Linux Tools from updates-nightly[1] and try again. If
> >>  oprofile fails, it should give you some hints in the Eclipse error log.
> >>
> >>>  Well, shouldn't it work out of the box?
> >>  Kind of. If you installed Linux Tools from our update-site, you need to
> >>  set up consolehelper manually. After this step it should work.
> >>
> >>  Let us know how it goes.
> >>
> >>  Thanks,
> >>  Severin
> >>
> >>  [1]http://download.eclipse.org/technology/linuxtools/update/
> >>
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> >>  https://dev.eclipse.org/mailman/listinfo/linuxtools-dev
> >>
> >
> >
> >
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