Re: [PATCH 0/5] [RFC] binary reading of ftrace ring buffers

[Steven Rostedt]

On Tue, 3 Mar 2009, Steven Rostedt wrote:

> Yes you can run multiple instances of this on different buffers.
> 
>  # ./rb-read.pl /tmp/buf-0
> 
> produces:
> 
>         0  [000]  7071.936459: (irq_handler_entry) irq 48
>         0  [000]  7071.936462: (irq_handler_exit) irq 48 ret 1
>         0  [000]  7071.988801: (sched_signal_send) sig: 14  task 0
>         0  [000]  7071.988813: (sched_wakeup) task 0 success=1
>         0  [000]  7071.988823: (sched_switch) prev 0:140 ==> next ntpd:6582272:0
>      3303  [000]  7071.988916: (sched_switch) prev 0:120 ==> next swap:7497072:0
>         0  [000]  7072.020370: (sched_wakeup) task 0 success=1
>         0  [000]  7072.020407: (sched_switch) prev 0:140 ==> next even:808416116:0

My perl script is still a bit buggy, but you get the idea ;-)

-- Steve

>        16  [000]  7071.936157: (sched_switch) prev 0:115 ==> next swap:7497072:0
> 
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