[lttng-dev] Tracing page waits with LTTng 2.3.0

[Jérémie Galarneau]

buffer_wait_start and buffer_wait_end were available because
__wait_on_buffer() (linux/fs/buffer.c:124) was instrumented. It is not
the case anymore so I'm afraid there are no equivalents.

Regards,
Jérémie

On Mon, Sep 16, 2013 at 9:23 AM, Steffen, Kai-Uwe (Kai-Uwe)
<kai-uwe.steffen at alcatel-lucent.com> wrote:
> Hi.
>
>
>
> Currently I’m working with LTTng 2.3.0 for Ubuntu 12.4, to see if this
> version would meet our requirements.
>
> With old LTT and LTTng 0.x it was possible to trace page waits.
>
> Tracepoints were called “Page Wait” for LTT and “buffer_wait_start”
> “buffer_wait_end” for LTTng 0.x.
>
>
>
> Now I looked for the tracepoints available with 2.3.0 and didn’t find
> tracepoint for the page waits.
>
>
>
> Lttng list –k
>
>
>
> Can you tell me if there is a tracepoint available in LTTng 2.3 or is it not
> supported yet?
>
>
>
> Thanks Kai
>
>
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-- 
Jérémie Galarneau
EfficiOS Inc.
http://www.efficios.com