Hi Milian, Are you running on an x86 processor? The pagefault tracepoints are called : x86_exceptions_page_fault_user, x86_exceptions_page_fault_kernel Can you see those tracepoints when you run: lttng list --kernel
Thank you, Francis 2017-05-24 12:00 GMT-04:00 Milian Wolff <milian.wo...@kdab.com>: > 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: > > https://lists.lttng.org/pipermail/lttng-dev/2013-April/019954.html > https://lists.lttng.org/pipermail/lttng-dev/2016-May/026033.html > > 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. > > Thanks > -- > Milian Wolff | milian.wo...@kdab.com | Software Engineer > KDAB (Deutschland) GmbH&Co KG, a KDAB Group company > Tel: +49-30-521325470 > KDAB - The Qt Experts > _______________________________________________ > lttng-dev mailing list > lttng-dev@lists.lttng.org > https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev > > -- Francis Deslauriers Software developer EfficiOS inc.
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