From: Felipe Balbi <balbi@ti.com> To: Peter Zijlstra <a.p.zijlstra@chello.nl>, Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Tony Lindgren <tony@atomide.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Linux ARM Kernel Mailing List <linux-arm-kernel@lists.infradead.org>, Linux OMAP Mailing List <linux-omap@vger.kernel.org> Subject: perf not capturing stack traces Date: Fri, 23 Jan 2015 13:51:28 -0600 [thread overview] Message-ID: <20150123195128.GE26557@saruman.tx.rr.com> (raw) [-- Attachment #1: Type: text/plain, Size: 8765 bytes --] Hi, I'm using v3.19-rc5 on an ARM Cortex A9 board. Unfortunately, perf is not able to capture any stack traces even though I CONFIG_STACKTRACE, CONFIG_FRAME_POINTER and CONFIG_ARM_UNWIND all enabled. I wonder if anybody else is facing similar issues. Here's console grab: perf record -e 'sched:*' -ag sleep 5 && perf report --stdio [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.092 MB perf.data (~4024 samples) ] # To display the perf.data header info, please use --header/--header-only option # # Samples: 0 of event 'sched:sched_kthread_stop' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_kthread_stop_ret' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 62 of event 'sched:sched_wakeup' # Event count (approx.): 62 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. :# 74.19% 74.19% swapper [unknown] [.] 00000000 | ---0 11.29% 11.29% kworker/0:2 [unknown] [.] 00000000 | ---0 9.68% 9.68% perf [unknown] [.] 00000000 | ---0 3.23% 3.23% sleep [unknown] [.] 00000000 | ---0 1.61% 1.61% ksoftirqd/0 [unknown] [.] 00000000 | ---0 :# Samples: 0 of event 'sched:sched_wakeup_new' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 102 of event 'sched:sched_switch' # Event count (approx.): 102 # # Children Self Command Shared Object Symbol # ........ ........ ............ ............. .............. # 31.37% 31.37% swapper [unknown] [.] 00000000 | ---0 20.59% 20.59% kworker/0:2 [unknown] [.] 00000000 | ---0 15.69% 15.69% ksoftirqd/0 [unknown] [.] 00000000 : | ---0 11.76% 11.76% perf [unknown] [.] 00000000 | ---0 11.76% 11.76% sleep [unknown] [.] 00000000 | ---0 7.84% 7.84% rcu_sched [unknown] [.] 00000000 | ---0 0.98% 0.98% kworker/u2:1 [unknown] [.] 00000000 | ---0 # Samples: 0 of event 'sched:sched_migrate_task' # Event count (approx.): 0 :# # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_free' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 1 of event 'sched:sched_process_exit' # Event count (approx.): 1 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 100.00% 100.00% sleep [unknown] [.] 00000000 | ---0 : # Samples: 0 of event 'sched:sched_wait_task' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_wait' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_fork' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol :# ........ ........ ....... ............. ...... # # Samples: 1 of event 'sched:sched_process_exec' # Event count (approx.): 1 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 100.00% 100.00% sleep [unknown] [.] 00000000 | ---0 # Samples: 70 of event 'sched:sched_stat_wait' # Event count (approx.): 17926123 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 33.13% 33.13% ksoftirqd/0 [unknown] [.] 00000000 : | ---0 24.83% 24.83% perf [unknown] [.] 00000000 | ---0 21.44% 21.44% sleep [unknown] [.] 00000000 | ---0 20.60% 20.60% rcu_sched [unknown] [.] 00000000 | ---0 0.00% 0.00% kworker/0:2 [unknown] [.] 00000000 | ---0 0.00% 0.00% swapper [unknown] [.] 00000000 | ---0 : # Samples: 43 of event 'sched:sched_stat_sleep' # Event count (approx.): 119659990589 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 95.01% 95.01% swapper [unknown] [.] 00000000 | ---0 4.93% 4.93% sleep [unknown] [.] 00000000 | ---0 0.06% 0.06% perf [unknown] [.] 00000000 | ---0 # Samples: 7 of event 'sched:sched_stat_iowait' :# Event count (approx.): 37447751 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 100.00% 100.00% kworker/0:2 [unknown] [.] 00000000 | ---0 # Samples: 19 of event 'sched:sched_stat_blocked' # Event count (approx.): 42514750 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 88.08% 88.08% kworker/0:2 [unknown] [.] 00000000 | ---0 7.24% 7.24% swapper [unknown] [.] 00000000 | : ---0 3.81% 3.81% ksoftirqd/0 [unknown] [.] 00000000 | ---0 0.86% 0.86% perf [unknown] [.] 00000000 | ---0 # Samples: 79 of event 'sched:sched_stat_runtime' # Event count (approx.): 46820375 # # Children Self Command Shared Object Symbol # ........ ........ ............ ............. .............. # 27.85% 27.85% perf [unknown] [.] 00000000 | ---0 27.48% 27.48% kworker/0:2 [unknown] [.] 00000000 : | ---0 20.79% 20.79% sleep [unknown] [.] 00000000 | ---0 12.51% 12.51% ksoftirqd/0 [unknown] [.] 00000000 | ---0 8.96% 8.96% rcu_sched [unknown] [.] 00000000 | ---0 2.41% 2.41% kworker/u2:1 [unknown] [.] 00000000 | ---0 # Samples: 0 of event 'sched:sched_pi_setprio' # Event count (approx.): 0 :# # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_move_numa' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_stick_numa' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_swap_numa' :# Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_wake_idle_without_ipi' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # -- balbi [-- Attachment #2: Digital signature --] [-- Type: application/pgp-signature, Size: 819 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: balbi@ti.com (Felipe Balbi) To: linux-arm-kernel@lists.infradead.org Subject: perf not capturing stack traces Date: Fri, 23 Jan 2015 13:51:28 -0600 [thread overview] Message-ID: <20150123195128.GE26557@saruman.tx.rr.com> (raw) Hi, I'm using v3.19-rc5 on an ARM Cortex A9 board. Unfortunately, perf is not able to capture any stack traces even though I CONFIG_STACKTRACE, CONFIG_FRAME_POINTER and CONFIG_ARM_UNWIND all enabled. I wonder if anybody else is facing similar issues. Here's console grab: perf record -e 'sched:*' -ag sleep 5 && perf report --stdio [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.092 MB perf.data (~4024 samples) ] # To display the perf.data header info, please use --header/--header-only option # # Samples: 0 of event 'sched:sched_kthread_stop' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_kthread_stop_ret' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 62 of event 'sched:sched_wakeup' # Event count (approx.): 62 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. :# 74.19% 74.19% swapper [unknown] [.] 00000000 | ---0 11.29% 11.29% kworker/0:2 [unknown] [.] 00000000 | ---0 9.68% 9.68% perf [unknown] [.] 00000000 | ---0 3.23% 3.23% sleep [unknown] [.] 00000000 | ---0 1.61% 1.61% ksoftirqd/0 [unknown] [.] 00000000 | ---0 :# Samples: 0 of event 'sched:sched_wakeup_new' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 102 of event 'sched:sched_switch' # Event count (approx.): 102 # # Children Self Command Shared Object Symbol # ........ ........ ............ ............. .............. # 31.37% 31.37% swapper [unknown] [.] 00000000 | ---0 20.59% 20.59% kworker/0:2 [unknown] [.] 00000000 | ---0 15.69% 15.69% ksoftirqd/0 [unknown] [.] 00000000 : | ---0 11.76% 11.76% perf [unknown] [.] 00000000 | ---0 11.76% 11.76% sleep [unknown] [.] 00000000 | ---0 7.84% 7.84% rcu_sched [unknown] [.] 00000000 | ---0 0.98% 0.98% kworker/u2:1 [unknown] [.] 00000000 | ---0 # Samples: 0 of event 'sched:sched_migrate_task' # Event count (approx.): 0 :# # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_free' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 1 of event 'sched:sched_process_exit' # Event count (approx.): 1 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 100.00% 100.00% sleep [unknown] [.] 00000000 | ---0 : # Samples: 0 of event 'sched:sched_wait_task' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_wait' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_process_fork' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol :# ........ ........ ....... ............. ...... # # Samples: 1 of event 'sched:sched_process_exec' # Event count (approx.): 1 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 100.00% 100.00% sleep [unknown] [.] 00000000 | ---0 # Samples: 70 of event 'sched:sched_stat_wait' # Event count (approx.): 17926123 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 33.13% 33.13% ksoftirqd/0 [unknown] [.] 00000000 : | ---0 24.83% 24.83% perf [unknown] [.] 00000000 | ---0 21.44% 21.44% sleep [unknown] [.] 00000000 | ---0 20.60% 20.60% rcu_sched [unknown] [.] 00000000 | ---0 0.00% 0.00% kworker/0:2 [unknown] [.] 00000000 | ---0 0.00% 0.00% swapper [unknown] [.] 00000000 | ---0 : # Samples: 43 of event 'sched:sched_stat_sleep' # Event count (approx.): 119659990589 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. .............. # 95.01% 95.01% swapper [unknown] [.] 00000000 | ---0 4.93% 4.93% sleep [unknown] [.] 00000000 | ---0 0.06% 0.06% perf [unknown] [.] 00000000 | ---0 # Samples: 7 of event 'sched:sched_stat_iowait' :# Event count (approx.): 37447751 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 100.00% 100.00% kworker/0:2 [unknown] [.] 00000000 | ---0 # Samples: 19 of event 'sched:sched_stat_blocked' # Event count (approx.): 42514750 # # Children Self Command Shared Object Symbol # ........ ........ ........... ............. .............. # 88.08% 88.08% kworker/0:2 [unknown] [.] 00000000 | ---0 7.24% 7.24% swapper [unknown] [.] 00000000 | : ---0 3.81% 3.81% ksoftirqd/0 [unknown] [.] 00000000 | ---0 0.86% 0.86% perf [unknown] [.] 00000000 | ---0 # Samples: 79 of event 'sched:sched_stat_runtime' # Event count (approx.): 46820375 # # Children Self Command Shared Object Symbol # ........ ........ ............ ............. .............. # 27.85% 27.85% perf [unknown] [.] 00000000 | ---0 27.48% 27.48% kworker/0:2 [unknown] [.] 00000000 : | ---0 20.79% 20.79% sleep [unknown] [.] 00000000 | ---0 12.51% 12.51% ksoftirqd/0 [unknown] [.] 00000000 | ---0 8.96% 8.96% rcu_sched [unknown] [.] 00000000 | ---0 2.41% 2.41% kworker/u2:1 [unknown] [.] 00000000 | ---0 # Samples: 0 of event 'sched:sched_pi_setprio' # Event count (approx.): 0 :# # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_move_numa' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_stick_numa' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_swap_numa' :# Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # # Samples: 0 of event 'sched:sched_wake_idle_without_ipi' # Event count (approx.): 0 # # Children Self Command Shared Object Symbol # ........ ........ ....... ............. ...... # -- balbi -------------- next part -------------- A non-text attachment was scrubbed... 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next reply other threads:[~2015-01-23 19:52 UTC|newest] Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-01-23 19:51 Felipe Balbi [this message] 2015-01-23 19:51 ` perf not capturing stack traces Felipe Balbi 2015-01-23 19:51 ` Felipe Balbi 2015-01-23 19:53 ` Felipe Balbi 2015-01-23 19:53 ` Felipe Balbi 2015-01-23 19:53 ` Felipe Balbi 2015-01-23 20:59 ` Arnaldo Carvalho de Melo 2015-01-23 20:59 ` Arnaldo Carvalho de Melo 2015-01-23 20:59 ` Arnaldo Carvalho de Melo 2015-01-23 22:37 ` Felipe Balbi 2015-01-23 22:37 ` Felipe Balbi 2015-01-23 22:37 ` Felipe Balbi 2015-01-24 15:12 ` Arnaldo Carvalho de Melo 2015-01-24 15:12 ` Arnaldo Carvalho de Melo 2015-01-24 15:12 ` Arnaldo Carvalho de Melo 2015-01-24 22:23 ` Felipe Balbi 2015-01-24 22:23 ` Felipe Balbi 2015-01-24 22:23 ` Felipe Balbi 2015-01-25 15:56 ` Russell King - ARM Linux 2015-01-25 15:56 ` Russell King - ARM Linux 2015-01-25 15:56 ` Russell King - ARM Linux 2015-01-26 10:27 ` Will Deacon 2015-01-26 10:27 ` Will Deacon 2015-01-26 10:27 ` Will Deacon 2015-01-26 12:12 ` Arnaldo Carvalho de Melo 2015-01-26 12:12 ` Arnaldo Carvalho de Melo 2015-01-26 12:12 ` Arnaldo Carvalho de Melo 2015-01-26 12:16 ` Will Deacon 2015-01-26 12:16 ` Will Deacon 2015-01-26 12:16 ` Will Deacon 2015-01-26 12:29 ` Arnaldo Carvalho de Melo 2015-01-26 12:29 ` Arnaldo Carvalho de Melo 2015-01-26 12:29 ` Arnaldo Carvalho de Melo 2015-01-26 13:54 ` Russell King - ARM Linux 2015-01-26 13:54 ` Russell King - ARM Linux 2015-01-26 13:54 ` Russell King - ARM Linux 2015-01-26 14:33 ` Arnaldo Carvalho de Melo 2015-01-26 14:33 ` Arnaldo Carvalho de Melo 2015-01-26 14:33 ` Arnaldo Carvalho de Melo 2015-01-26 13:51 ` Russell King - ARM Linux 2015-01-26 13:51 ` Russell King - ARM Linux 2015-01-26 13:51 ` Russell King - ARM Linux 2015-01-26 14:37 ` Arnaldo Carvalho de Melo 2015-01-26 14:37 ` Arnaldo Carvalho de Melo 2015-01-26 14:37 ` Arnaldo Carvalho de Melo
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