[ltt-dev] latest LTTng on 64bit RHEL

[Mathieu Desnoyers]

* Martin Kosina (martin_kosina at yahoo.com) wrote:
> Hi guys,
> 
> Are there any known issues with running LTTng on em64t, specifically on
> RHEL5 ? The traces run normally, but are basically empty, just a single
> "unknown process" and just a bunch of "MODE_UNKNOWN" messages in the Event
> Viewer and no timelines.
> 
> Kernel is a 2.6.30.9 (built from git://
> git.kernel.org/pub/scm/linux/kernel/git/compudj/linux-2.6-lttng.git on the
> traced  host), latest ltt-control, and lttv from git. Traces built from the
> same sources on ia32 are working fine there. (The GUI is running on a 32-bit
> box mounting the other machine's /tmp, FWIW).
> 
> Thanks,
> Martin
> 
> 
> P.S. It all looks pretty normal when arming/running/stopping:
> 
> [mkosina at metersim04 lttv]$ sudo /usr/local/bin/ltt-armall
> Connecting all markers
> Connecting /mnt/debugfs/ltt/markers/input/input_event
> Connecting /mnt/debugfs/ltt/markers/irq_state/idt_table
> Connecting /mnt/debugfs/ltt/markers/module_state/list_module
> Connecting /mnt/debugfs/ltt/markers/softirq_state/softirq_vec
> Connecting /mnt/debugfs/ltt/markers/swap_state/statedump_swap_files
> Connecting /mnt/debugfs/ltt/markers/syscall_state/sys_call_table
> 

Hrm, it looks like your LTTng probe modules are either not compiled or
not loaded.

Can you give us a copy of your kernel .config and lsmod output ?

Mathieu

> [mkosina at metersim04 lttv]$ sudo /usr/local/bin/lttctl -C --channel_root
> /mnt/debugfs/ltt -w /tmp/trace1 -o channel.all.overwrite=0 -n 1 trace
> 
> Linux Trace Toolkit Trace Control 0.71-30092009
> 
> Controlling trace : trace
> 
> lttctl: Creating trace
> lttctl: Forking lttd
> Linux Trace Toolkit Trace Daemon 0.71-30092009
> 
> Reading from debugfs directory : /mnt/debugfs/ltt/trace
> Writing to trace directory : /tmp/trace1
> 
> [mkosina at metersim04 lttv]$ sudo /usr/local/bin/lttctl -D trace
> Linux Trace Toolkit Trace Control 0.71-30092009
> 
> Controlling trace : trace
> 
> lttctl: Pausing trace
> lttctl: Destroying trace

> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev


-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68