[ltt-dev] Problem with tracing network events in 0.128 to 0.132

Gregory Haskins ghaskins at novell.com
Wed Jun 17 10:01:04 EDT 2009

Pierre-Marc Fournier wrote:
> Mathieu Desnoyers wrote:
>> * Pierre-Marc Fournier (pierre-marc.fournier at polymtl.ca) wrote:
>>> Gregory Haskins wrote:
>>>> The RV view.  I noticed that if you get something like irq_entry(x)
>>>> irq_entry(y), irq_exit(y), irq_exit(x), its like the last event gets
>>>> lost and (I believe) x will stay "lit" forever in the RV window (tho it
>>>> could be y, will have to confirm).  Turning on lockdep makes that
>>>> nesting impossible and Ive noted that the issue seems to goes away in
>>>> this config.  Thus my theory about the nesting.  I can post a screen
>>>> shot if it will help.
>>> Yes this is a known problem... I will try to get it fixed in the next days.
>> Pierre-Marc : any progress on this issue ?
> Sorry for the delay. Some fixes were committed to head. It should be
> better now.
> I think there are still a few cases where the bug occurs. I would be
> glad to check it out if someone would send me a problematic trace.
> Thanks
> pmf

I have confirmed that the RV view looks better now!  Thanks guys!

FYI: I have pushed the updated 0.12.15 rpms out to the repositories
available here:


    Note: I still only have *suse support since other distros have a
build error I have yet to resolve.  For instance, here is the error on
the RHEL-5 build:

    libtool: install: warning: remember to run `libtool --finish /usr/lib'
    test -z "/usr/include/ltt" || /bin/mkdir -p "/usr/include/ltt"
    /bin/mkdir: cannot create directory `/usr/include/ltt': Permission
    make[2]: *** [install-lttincludeHEADERS] Error 1
    make[2]: Leaving directory
    make[1]: *** [install-am] Error 2
    make[1]: Leaving directory
    make: *** [install-recursive] Error 1
    error: Bad exit status from /var/tmp/rpm-tmp.10077 (%install)

    Patches for the .spec file welcome!


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