[lttng-dev] ★ lttng-dev, Ravi left a message for you

Title: lttng-dev, Ravi left a message for you See this email in English, Deutsch, Français, Italiano, Español, Português or 36 other languages.

Re: [lttng-dev] Beginner question: how to inspect scheduling of multi-threaded user application?

Sorry had a sending problem. Here is the rest. On Wed, Aug 24, 2016 at 12:35 PM, Jonathan Rajotte < jonathan.r.jul...@gmail.com> wrote: > Hi, > > On Aug 24, 2016 12:18 PM, "Francis Deslauriers" < > francis.deslauri...@mail.utoronto.ca> wrote: > > > > Hi David, > > If you specifically want to

Re: [lttng-dev] Beginner question: how to inspect scheduling of multi-threaded user application?

Hi, On Aug 24, 2016 12:18 PM, "Francis Deslauriers" wrote: > > Hi David, > If you specifically want to trace the scheduling of the threads of your app, you don't need custom tracepoints. > Enabling the sched_switch kernel event will give you both of cpu id

Re: [lttng-dev] Beginner question: how to inspect scheduling of multi-threaded user application?

Hi David, If you specifically want to trace the scheduling of the threads of your app, you don't need custom tracepoints. Enabling the sched_switch kernel event will give you both of cpu id and thread id. Look at the cpu_id and next_tid fields. You can enable the sched_switch event using : lttng

Re: [lttng-dev] [PATCH latency-tracker] Fix: use local ops for freelist per-cpu counter

Merged, thanks ! Julien On 23-Aug-2016 11:44:45 PM, Mathieu Desnoyers wrote: > Signed-off-by: Mathieu Desnoyers > --- > tracker_private.h | 3 ++- > wrapper/freelist-ll.h | 21 +++-- > 2 files changed, 17 insertions(+), 7 deletions(-) > >

Re: [lttng-dev] [PATCH latency-tracker] Fix: sizeof() bug, state tracking merge issue, PID 0

Merged, big thanks ! Julien On 23-Aug-2016 07:37:01 PM, Mathieu Desnoyers wrote: > - 3 sizeof() issues (using pointer size rather than object size), > - state tracking merge issue on switch in: the get following the > insertion may not get the same node when there are duplicates, > - also

Re: [lttng-dev] [Qemu-devel] [PATCH 0/6] hypertrace: Lightweight guest-to-QEMU trace channel

Stefan Hajnoczi writes: > On Sun, Aug 21, 2016 at 02:32:34PM +0200, Lluís Vilanova wrote: >> Unfortuntely, I've been unable to to make dtrace recognise QEMU's events (I'm >> only able to see the host kernel events). If someone with more experience on >> it >> can help me use dtrace with QEMU's

[lttng-dev] Beginner question: how to inspect scheduling of multi-threaded user application?

Hi I am new to tracing in Linux and to lttng. I have a multi-threaded user application and I want to see: 1) When the threads are scheduled to run 2) Which cores the threads are running on. I have installed lttng on Ubuntu 14.04 LTS. I am expecting to visualise the trace using