[lttng-dev] great to read your presention

[Geneviève Bastien]

Hi David,

As Alex said, the CPU usage is still a work in progress. The data is 
available now, but we are working on a view to better show it. It should 
all be available in master in the coming weeks.

As for the wait chain, you may be interested in the critical path 
analysis on LTTng kernel traces. This feature will make it slowly into 
master, but in the meantime, you can try it in our experimental version 
of the tracing RCP available here: 
http://secretaire.dorsal.polymtl.ca/~gbastien/TracingRCP/

You can get the critical path of a process by selecting it in the 
control flow view (with the critical path view open).

Cheers,
Geneviève


On 02/09/2014 10:49 PM, David_Ke at compal.com wrote:
> Thanks, Alexandre,
>
> Good to hear that.
> Hope to get that soon.
> By the way, some feature to suggest for the utility~
> The control flow is aim to analyze the "long wait time" issue for that
> process,
> IMHO, If it can display the "wait chain" as well as the call stack for each
> scheduled thread ,it will be awesome...
>
> Thanks,
>
> David
>
> ----Original Message-----
> From: Alexandre Montplaisir [mailto:alexmonthy at voxpopuli.im]
> Sent: Saturday, February 08, 2014 6:39 AM
> To: Ke. David (TPE)
> Cc: lttng-dev at lists.lttng.org; Genevieve Bastien
> Subject: Re: [lttng-dev] great to read your presention
>
> Hi,
>
> The CPU usage view is still a work-in-progress, but it should be ready in a
> few weeks. We have a bit of infrastructure work to do first.
>
> CC'ing Genevieve, she can probably give us more details about its state.
>
> Cheers,
> Alexandre
>
>
>
> On 14-02-04 08:55 PM, David_Ke at compal.com wrote:
>> Hi Yannick,
>>
>>   
>>
>> Great to read your deck and it is really a good presentation, from
>> that ,I know more about awesome features of Lttng.
>>
>>   
>>
>> I was a SR. DEV of MSFT Windows team and was responsible for Xperf and
>> ADK portion in the past, Lttng did catch my eye much more than other
>> utilities (for example perf and oprefile...etc.)
>>
>>   
>>
>> I download Lttng sample
>> trace(http://lttng.org/files/samples/sample-ctf-trace-20120412.tar.bz2
>> )as
>> well as the RCP version trace viewer(
>> http://secretaire.dorsal.polymtl.ca/~alexmont/tracing-rcp/)but can't
>> find the CPU usage tab in the viewer.
>>
>>   
>>
>> Is the feature still under development? Where can I got it and have a try?
>>
>>   
>>
>> Thanks,
>>
>>   
>>
>> David Ke
>>
>>
>>
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