[ltt-dev] lttctl -R hang up on 2.6.26 with rt

[ltt-dev] lttctl -R hang up on 2.6.26 with rt

[Gerrit Binnenmars]

Hello,

I merged the 2.6.26 kernel with the rt13 patchset, together with the
lttng 0.10-pre15 patchset. Further I use ltt-control 0.50.
I have a dual core Intel x86_64 architecture.
Once in a while I am able to create a trace, but most of the
times lttctl hangs. 
I added printk which showed that the hang was on synchronize_sched in ltt_tracer.c
It seems that there is data in cpu0 and cpu1 in the trace, but nothing in control.
Does anyone have an idea how to solve or further investigate this.

At the moment it is not possible to select a newer kernel version.

Thanks in advance,

Gerrit Binnenmars

[ltt-dev] lttctl -R hang up on 2.6.26 with rt

[Mathieu Desnoyers]

* Gerrit Binnenmars (gerritbinnenmars at online.nl) wrote:
> Hello,
> 
> I merged the 2.6.26 kernel with the rt13 patchset, together with the
> lttng 0.10-pre15 patchset. Further I use ltt-control 0.50.
> I have a dual core Intel x86_64 architecture.
> Once in a while I am able to create a trace, but most of the
> times lttctl hangs. 
> I added printk which showed that the hang was on synchronize_sched in ltt_tracer.c
> It seems that there is data in cpu0 and cpu1 in the trace, but nothing in control.
> Does anyone have an idea how to solve or further investigate this.
> 
> At the moment it is not possible to select a newer kernel version.
> 

You should probably enable some of the kernel hacking options, and maybe
it will help you produce a more detailed OOPS log. Please email the full
OOPS so we can help digging further.

Thanks,

Mathieu


> Thanks in advance,
> 
> Gerrit Binnenmars
> 
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-- 
Mathieu Desnoyers
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