[ros-users] slam_gmapping crashing

[Brian Gerkey]

hi Gonçalo,

It's odd that slam_gmapping is receiving a SIGKILL.  Can you try
running it in gdb, outside roslaunch?  Something like:

$ roscd gmapping
$ gdb bin/slam_gmapping
...
(gdb) r

If it still dies from SIGKILL, then there's nothing that gdb is going
to be able to tell you.  If it dies from something else, then you
should try to get a backtrace from gdb.

You might try running inside valgrind, to see if you get a different result:

$ roscd gmapping
$ valgrind -v bin/slam_gmapping

	brian.

2010/7/27 Gonçalo Cabrita <goncabrita at gmail.com>:
> Thanks for your quick reply Brian.
> slam_gmapping is crashing randomly, it can crash a few seconds or a few
> minutes after it started. Also I've noticed that slam_gmapping crashing is
> causing the internet connection to crash as well.
>
> I did what you suggested and this is what I got:
> I did a launch file as instructed:
> <launch>
>   <master auto="start"/>
>   <node pkg="gmapping" type="slam_gmapping" respawn="false"
> name="slam_gmapping" output="screen" launch-prefix="xterm -e gdb --args">
>   </node>
> </launch>
> I open a roscore, set use_sim_time to true and then I launch slam_gmapping:
> $ roslaunch slam_gmapping.launch
> I get the gdb xterm window...
> (gdb) set logging on
> (gdb) run
> Now I start my rosbag play....
> The output in the gdb.txt file is:
> Starting program:
> /home/blazz/ros/stacks/slam_gmapping/gmapping/bin/slam_gmapping > gdb_output
> [Thread debugging using libthread_db enabled]
> [New Thread 0xb7fdcb70 (LWP 2249)]
> [New Thread 0xb77dbb70 (LWP 2250)]
> [New Thread 0xb6fdab70 (LWP 2251)]
> [New Thread 0xb65ffb70 (LWP 2258)]
> [New Thread 0xb5dfeb70 (LWP 2261)]
> [New Thread 0xb55fdb70 (LWP 2304)]
> [New Thread 0xb4dfcb70 (LWP 2305)]
> [Thread 0xb4dfcb70 (LWP 2305) exited]
> [Thread 0xb55fdb70 (LWP 2304) exited]
> [Thread 0xb5dfeb70 (LWP 2261) exited]
> [Thread 0xb65ffb70 (LWP 2258) exited]
> [Thread 0xb6fdab70 (LWP 2251) exited]
> [Thread 0xb77dbb70 (LWP 2250) exited]
> [Thread 0xb7fdcb70 (LWP 2249) exited]
> Program terminated with signal SIGKILL, Killed.
> The program no longer exists.
> The output doesn't give too much info... Does it help?
> Gonçalo Cabrita
> ISR - University of Coimbra
> Portugal
> On Tue, Jul 27, 2010 at 4:40 PM, Brian Gerkey <gerkey at willowgarage.com>
> wrote:
>>
>> hi Gonçalo,
>>
>> A shot in the dark: you might be exhausting available memory.  In any
>> case, try running slam_gmapping in gdb to see what's causing it to die
>>
>> (http://www.ros.org/wiki/roslaunch/Tutorials/Roslaunch%20Nodes%20in%20Valgrind%20or%20GDB).
>>
>>        brian.
>>
>> 2010/7/27 Gonçalo Cabrita <goncabrita at gmail.com>:
>> > Hi everyone!
>> > I'm trying to generate a map according to the tutorials and I've ran
>> > into a
>> > bit of a problem. I'm trying to run slam_gmapping on my MacBook Core2Duo
>> > running Ubuntu 10.04 with ROS and I'm allways getting the same error,
>> > slam_gmapping crashes after a while after starting to run...
>> > ...
>> > *************RESAMPLE***************
>> > Deleting Nodes: 3 4 5 7 10 12 17 19 21 24 26 27 Done
>> > Deleting old particles...Done
>> > Copying Particles and  Registering  scans... Done
>> > update frame 422
>> > update ld=1.00063 ad=0.0320879
>> > Laser Pose= 5.26866 0.0983503 0.0260777
>> > m_count 4
>> > Average Scan Matching Score=110.945
>> > neff= 29.3825
>> > Registering Scans:Done
>> > /home/blazz/ros/ros/bin/rosrun: line 35:  1862 Killed
>> >  $exepath "$@"
>> > This is running on other machines in the lab but not in my Mac. I've
>> > tried
>> > re-installing ROS but the problem persists.
>> > What additional information should I provide to help solve this
>> > problem???
>> > Thanks for your help,
>> > Gonçalo Cabrita
>> > ISR - University of Coimbra
>> > Portugal
>> > _______________________________________________
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>> > ros-users at code.ros.org
>> > https://code.ros.org/mailman/listinfo/ros-users
>> >
>> >
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