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From: Milian Wolff <>
Subject: tracing page_faults with lttng?
Date: Wed, 24 May 2017 18:00:47 +0200	[thread overview]
Message-ID: <1807360.trHWC9KRqs__41028.421073179$1495642666$gmane$org@milian-kdab2> (raw)

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Hey all,

when I trace with perf, I can see page_faults occurring. But when I do 
something like the following with lttng:

lttng create
lttng enable-channel kernel -k
lttng enable-event -c kernel -k -a
lttng start
# trigger page faults
lttng stop

then I do not see any page faults in tracecompass/babeltrace. What do I need 
to do to see those too? I'm aware that lttng comes with its own set of 
tracepoints - i.e. it's not using the same tracepoints that perf knows about. 
But googling shows me e.g. this:

Which sounds like the feature should be available in lttng too?

I'm using the ArchLinux packages in AUR, i.e. version 2.9.2 of LTTng and 
kernel 4.10.13-1.

Milian Wolff | | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt Experts

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lttng-dev mailing list

             reply	other threads:[~2017-05-24 16:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-24 16:00 Milian Wolff [this message]
     [not found] <1807360.trHWC9KRqs@milian-kdab2>
2017-05-24 16:26 ` tracing page_faults with lttng? Francis Deslauriers
     [not found] ` <>
2017-05-29  8:44   ` Milian Wolff
     [not found]   ` <2312247.5OrstNElbn@milian-kdab2>
2019-10-12 21:31     ` Milian Wolff via lttng-dev
     [not found]     ` <3174598.JndGstr8t1@agathebauer>
2019-11-02 15:31       ` Milian Wolff via lttng-dev
     [not found]       ` <5848055.rMpeChdSCL@agathebauer>
2019-11-04 15:55         ` Francis Deslauriers

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