RE: [PATCH 2/2] trace,x86: Add x86 irq vector entry/exit tracepoints

[Seiji Aguchi]

Steven,

Thank you for giving me an explanation in detail how stacktrace works.
I was confused stacktrace.

>> Rip in local timer interrupt is more accurate information
>> for achieving my goal than stacktrace
>
>Does the above change your mind?



I'm concerned about amount of consumption of ring buffer because
I would like to use a background tracer for multiple cases in our costomer's system
for solving several issues.

As you know, I'm trying to improve tracepoints of signal events with others.
  https://lkml.org/lkml/2011/11/30/223
  
And I'm posting a patch of jbd2 event by myself.
  https://lkml.org/lkml/2011/11/29/328

How much does stacktrace consume ring buffer, compared to a tracepoint?

Seiji


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