On Wed, 10 Jun 2015 20:59:49 +0200 (CEST) Thomas Gleixner <t...@linutronix.de> wrote:
> On Wed, 10 Jun 2015, Mike Galbraith wrote: > > > On Wed, 2015-06-10 at 17:12 +0200, Thomas Gleixner wrote: > > > > > Some more information about your symptoms in form of configuration, > > > extra patches, kernel traces etc. would be appreciated. > > > > homer:~/tmp # perf record -C 3 -eirq:*,irq_vectors:local* -- sleep 10 I would recommend using trace-cmd especially if you add function tracing, as it's made more for fast tracing. -- Steve > > [ perf record: Woken up 2 times to write data ] > > [ perf record: Captured and wrote 1380.507 MB perf.data (19530595 samples) ] > > homer:~/tmp # perf script | grep irq_vectors:local_timer > > ksoftirqd/3 19 [003] 5586.564238: irq_vectors:local_timer_entry: > > vector=239 > > ksoftirqd/3 19 [003] 5586.564239: irq_vectors:local_timer_exit: > > vector=239 > > ksoftirqd/3 19 [003] 5586.568238: irq_vectors:local_timer_entry: > > vector=239 > > ksoftirqd/3 19 [003] 5586.568239: irq_vectors:local_timer_exit: > > vector=239 > > ksoftirqd/3 19 [003] 5586.632218: irq_vectors:local_timer_entry: > > vector=239 > > That gap is odd. Can you fire up the function tracer please? > > Thanks, > > tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
