[ltt-dev] Hi, everybody. i am a newbie here! who could tellmehow can i use LTTng ( i just need an example without Linux Trace ToolkitNextGeneration Manual)

Tue May 25 08:33:31 EDT 2010

Gavin,

Please make sure you have run the following command's in sequence :

Before proceeding, run the following script:

--------------------------------------------------------------
#!/bin/bash
mkdir /mnt/debugfs
echo "debugfs  /mnt/debugfs debugfs  defaults   0  0" >> /etc/fstab
echo "debugfs Mounted"
echo ltt-filter >> /etc/modules
echo ltt-statedump  >> /etc/modules
echo ltt-kprobes  >> /etc/modules
echo ltt-marker-control >> /etc/modules
echo ltt-serialize >> /etc/modules
echo ltt-trace-control >> /etc/modules
echo ltt-userspace-event >> /etc/modules

#probes
echo block-trace >> /etc/modules
echo fs-trace >> /etc/modules
echo ipc-trace >> /etc/modules
echo kernel-trace >> /etc/modules
echo lockdep-trace >> /etc/modules
echo mm-trace >> /etc/modules
echo net-extended-trace >> /etc/modules
echo net-trace >> /etc/modules
echo pm-trace >> /etc/modules
echo rcu-trace >> /etc/modules
echo syscall-trace >> /etc/modules
echo trap-trace >> /etc/modules
--------------------------------------------------------------

*Now Reboot the target, and proceed with the below steps !! You should be
now able to get the trace output. *

1.* ltt-armall*

(The above is required to connect all the marker's, else you'll end up with
Zero sized trace file, as you have shown here)

2. *lttctl -C -w /tmp/trace1 trace1*

(Now carry on with you normal process on the system, till then your trace
data will be collected, then after some time run the below command to assure
that all events are logged into the trace files)

3.* ** lttctl -D trace1*

4.* ** lttv -m textDump -t /tmp/trace1 > lttng-output.txt

*If you are following the same steps, then show me the output of command ->
"*ltt-armall*" .

-Srikanth*
*

2010/5/25 unbutun <unbutun at sohu.com>

>  No, Srikanth, i do everything in the
> Linux Trace ToolkitNextGeneration Manual
>
> and
> # lttctl -C -w /tmp/trace1 trace1
>
>
> # lttctl -D trace1
> all successful
>
> but there is nothing in /tmp/trace1/ files (these files' size is 0 )
>
> # lttv -m textDump -t /tmp/trace1
>
> got the error:
>
> The input data file /tmp/trace1/irq_state_0 does not contain a trace
> The input data file /tmp/trace1/module_state_0 does not contain a trace
> The input data file /tmp/trace1/syscall_state_0 does not contain a trace
> The input data file /tmp/trace1/softirq_state_0 does not contain a trace
> The input data file /tmp/trace1/metadata_0 does not contain a trace
> The input data file /tmp/trace1/swap_state_0 does not contain a trace
>
> (process: 2272): WARNING: Trace /tmp/trace1/ has no metadata tracefile
> (process: 2272): CRITICAL: cannot open trace /tmp/trace1
>
> /usr/bin/lttv: line 15: 2270 Segmentation fault $0.real $*
>
> Do you know what's wrong of that?
>
>
> Thanks, Advance
>
> And thank you for your kind
>
> Regards,
>
> Gavin
> 2010-05-25
> ------------------------------
>   Happy everyday !
> ------------------------------
> *发件人：* srikanth krishnakar
> *发送时间：* 2010-05-25  14:56:25
> *收件人：* unbutun
> *抄送：*
> *主题：* Re: Re: [ltt-dev] Hi, everybody. i am a newbie here! who could
> tellmehow can i use LTTng ( i just need an example without Linux Trace
> ToolkitNextGeneration Manual)
>
>
> On Tue, May 25, 2010 at 3:40 AM, unbutun <unbutun at sohu.com> wrote:
>
>>  Hi, Srikanth
>>
>> I do it as the following:
>>
>> 1. download the kernel 2.6.33.3 and patch
>> patch-2.6.33.3-lttng-0.213.tar.gz ,  tar xzf them into /usr/src/kernel, move
>> patch-2.6.33.3-lttng-0.213 to patches,
>>     move patches into linux-2.6.33.3
>>
>> 2. quilt push -a
>>
>> 3. enabled the kernel LTTng in make menuconfig, just enable this and every
>> other is as default (kernel and LTTng)
>>
>> 4. build the kernel and install it
>>
>> 5. rpm -i  the following:
>>     libkcompat-devel-0.0-1.1.i386.rpm
>>     liblttctl0-0.71-1.1.i386.rpm
>>     liblttctl-devel-0.71-1.1.i386.rpm
>>     liblttv0-0.12.17-1.1.i386.rpm
>>     liblttv-devel-0.12.17-1.1.i386.rpm
>>     liburcu0-0.2.3-alpha.1.1.i386.rpm
>>     liburcu-devel-0.2.3-alpha.1.1.i386.rpm
>>     ltt-control-0.71-1.1.i386.rpm
>>     ltt-control-debug-0.71-1.1.i386.rpm
>>     lttv-0.12.17-1.1.i386.rpm
>>     lttv-debug-0.12.17-1.1.i386.rpm
>>
>
>
> I think you have missed the following command here, before starting the
> trace;
>
> *# ltt-armall*
>
> Then you follow with the below commands !!!
>
>>
>> 6. run your command:
>>
>>  # lttctl -C -w /tmp/trace1 trace1
>>
>>
>> # lttctl -D trace1
>> all successful
>>
>> but
>>  # lttv -m textDump -t /tmp/trace1  > lttng-output.txt
>> failed, and said that there is no metadata in /tmp/trace1/metadata_0
>>
>>
>>
>> is there anything wrong with my steps or anything else do i need to
>> install or config in my FC11 ?
>>
>>
>> Thanks, Advance
>>
>> Any help would be much appreciated !
>>
>> Regards,
>>
>> Gavin
>>
>> 2010-05-25
>> ------------------------------
>>  unbutun
>> ------------------------------
>> *发件人：* srikanth krishnakar
>> *发送时间：* 2010-05-24  21:39:35
>> *收件人：* unbutun
>> *抄送：* ltt-dev
>> *主题：* Re: [ltt-dev] Hi, everybody. i am a newbie here! who could tell
>> mehow can i use LTTng ( i just need an example without Linux Trace Toolkit
>> NextGeneration Manual)
>>  Gavin,
>>
>> 1. Make sure you are running the FC11 kernel 2.6.30 (any FC11 kernel) with
>> LTTng support. That is you need to patch the kernel of FC11 with LTTng
>> patches and should be loaded with all necessary LTTng kernel modules.
>>
>> 2. Once you make sure that CONFIG_LTT and other LTT options are enabled
>> in kernel, then you need to run "ltt-armall" for markers.
>>
>> 3. Now you should be ready to start the trace process with the command :
>>
>> # lttctl -C -w /tmp/trace1 trace1
>>
>> 4. To stop tracing you run:
>>
>>
>> # lttctl -D trace1
>>
>> 5. Dump the output to a text file
>>
>>
>> # lttv -m textDump -t /tmp/trace1  > lttng-output.txt
>>
>>
>>
>>
>> For more information, you can follow the instructions  at :
>>
>> http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html
>>
>>
>> -Srikanth
>>
>>
>>
>>  On Mon, May 24, 2010 at 5:44 PM, unbutun <unbutun at sohu.com> wrote:
>>
>>>   Hi,
>>>
>>> just as the title, i have install lttng on FC11. and don't know how to
>>> use it to trace the kernel,
>>>
>>> is there anyone who is very kind to tell me about that without care about
>>> my junior question ?
>>>
>>>
>>> Thanks Advance
>>>
>>> Regards,
>>>
>>> Gavin
>>>
>>> 2010-05-24
>>> ------------------------------
>>> unbutun
>>>
>>> _______________________________________________
>>> ltt-dev mailing list
>>> ltt-dev at lists.casi.polymtl.ca
>>> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
>>>
>>>
>>
>>
>> --
>> "The Good You Do, The Best You GET"
>>
>> Regards
>> Srikanth Krishnakar
>> **********************
>>
>
>
>
> --
> "The Good You Do, The Best You GET"
>
> Regards
> Srikanth Krishnakar
> **********************
>

-- 
"The Good You Do, The Best You GET"

Regards
Srikanth Krishnakar
**********************
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