[lttng-dev] tracing page_faults with lttng?
milian.wolff at kdab.com
Sat Oct 12 17:31:51 EDT 2019
On Montag, 29. Mai 2017 10:44:50 CEST Milian Wolff wrote:
> On Wednesday, May 24, 2017 6:26:38 PM CEST Francis Deslauriers wrote:
> > Hi Milian,
> > Are you running on an x86 processor?
> Yes, Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz.
> > 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
> $ lttng list --kernel | grep fault
> x86_exceptions_page_fault_user (loglevel: TRACE_EMERG (0)) (type:
> x86_exceptions_page_fault_kernel (loglevel: TRACE_EMERG (0)) (type:
> kvm_async_pf_doublefault (loglevel: TRACE_EMERG (0)) (type:
a follow up to the above question: What about tracing page faults on ARM? Perf
can do that, but I see no page_fault trace points in the output of `lttng list
Milian Wolff | milian.wolff at kdab.com | Senior Software Engineer
KDAB (Deutschland) GmbH, a KDAB Group company
KDAB - The Qt, C++ and OpenGL Experts
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