Messages in this thread | | | Date | Thu, 31 May 2012 12:28:15 +0400 | From | Dmitry Antipov <> | Subject | Re: Perf record format portability |
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On 05/29/2012 07:10 PM, Arnaldo Carvalho de Melo wrote:
> I haven't tested this, but libtraceevent is now in, perhaps it works for > you now? Can you check?
It doesn't work. Attempt to do 'perf report' on ARM for the data collected on x86 shows 'unknown:unknown' for event names (see report_x86_on_ARM.txt), and 'perf report' on x86 for the data collected on ARM shows invalid event names (see report_ARM_on_x86.txt).
Dmitry # ======== # captured on: Thu May 31 08:15:47 2012 # hostname : notebook # os release : 3.3.7-1.fc16.x86_64 # perf version : 3.4.9208.gaf56e0 # arch : x86_64 # nrcpus online : 4 # nrcpus avail : 4 # cpudesc : Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz # cpuid : GenuineIntel,6,42,7 # total memory : 3934652 kB # cmdline : /tmp/perf record -a -R -f -m 8192 -c 1 -e sched:sched_switch -e sched:sched_process_exit -e sched:sched_process_fork -e sched:sched_wakeup -e sched:sched_migrate_task /bin/ls -la / # event : name = sched:sched_switch, type = 2, config = 0x117, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 45, 46, 47, 48 } # event : name = sched:sched_process_exit, type = 2, config = 0x114, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 49, 50, 51, 52 } # event : name = sched:sched_process_fork, type = 2, config = 0x111, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 53, 54, 55, 56 } # event : name = sched:sched_wakeup, type = 2, config = 0x119, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 57, 58, 59, 60 } # event : name = sched:sched_migrate_task, type = 2, config = 0x116, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 61, 62, 63, 64 } # HEADER_CPU_TOPOLOGY info available, use -I to display # HEADER_NUMA_TOPOLOGY info available, use -I to display # ======== # # Samples: 223 of event 'unknown:unknown' # Event count (approx.): 223 # # Overhead Command Shared Object Symbol # ........ ........... ................. .............. # 25.56% ls [kernel.kallsyms] [k] __schedule 25.11% swapper [kernel.kallsyms] [k] __schedule 24.66% kworker/1:1 [kernel.kallsyms] [k] __schedule 23.77% urxvt [kernel.kallsyms] [k] __schedule 0.45% perf [kernel.kallsyms] [k] __schedule 0.45% migration/2 [kernel.kallsyms] [k] __schedule
# Samples: 1 of event 'unknown:unknown' # Event count (approx.): 1 # # Overhead Command Shared Object Symbol # ........ ....... ................. ........... # 100.00% ls [kernel.kallsyms] [k] do_exit
# Samples: 0 of event 'unknown:unknown' # Event count (approx.): 0 # # Overhead Command Shared Object Symbol # ........ ....... ............. ...... #
# Samples: 138 of event 'unknown:unknown' # Event count (approx.): 138 # # Overhead Command Shared Object Symbol # ........ ........... ................. .................. # 60.87% ls [kernel.kallsyms] [k] ttwu_do_wakeup 38.41% kworker/1:1 [kernel.kallsyms] [k] ttwu_do_wakeup 0.72% perf [kernel.kallsyms] [k] ttwu_do_wakeup
# Samples: 2 of event 'unknown:unknown' # Event count (approx.): 2 # # Overhead Command Shared Object Symbol # ........ ........... ................. ................ # 50.00% perf [kernel.kallsyms] [k] set_task_cpu 50.00% migration/2 [kernel.kallsyms] [k] set_task_cpu
# # (For a higher level overview, try: perf report --sort comm,dso) # # ======== # captured on: Thu May 31 12:19:45 2012 # hostname : linaro-developer # os release : 3.4.0+ # perf version : 3.4.0 # arch : armv7l # nrcpus online : 2 # nrcpus avail : 2 # cpudesc : ARMv7 Processor rev 2 (v7l) # total memory : 1022872 kB # cmdline : /usr/bin/perf record -a -R -f -m 8192 -c 1 -e sched:sched_switch -e sched:sched_process_exit -e sched:sched_process_fork -e sched:sched_wakeup -e sched:sched_migrate_task /bin/ls -la / # event : name = sched:sched_switch, type = 2, config = 0x37, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 11, 12 } # event : name = sched:sched_process_exit, type = 2, config = 0x34, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 13, 14 } # event : name = sched:sched_process_fork, type = 2, config = 0x31, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 15, 16 } # event : name = sched:sched_wakeup, type = 2, config = 0x39, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 17, 18 } # event : name = sched:sched_migrate_task, type = 2, config = 0x36, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 19, 20 } # HEADER_CPU_TOPOLOGY info available, use -I to display # ======== # # Samples: 148 of event 'syscalls:sys_exit_unshare' # Event count (approx.): 148 # # Overhead Command Shared Object Symbol # ........ ........... ................ ...... # 38.51% ls [unknown] [.] 0000000000000000 37.84% kworker/1:1 [unknown] [.] 0000000000000000 12.16% swapper [unknown] [.] 0000000000000000 10.81% sshd [unknown] [.] 0000000000000000 0.68% perf [unknown] [.] 0000000000000000
# Samples: 1 of event 'raw_syscalls:sys_exit' # Event count (approx.): 1 # # Overhead Command Shared Object Symbol # ........ ....... ................ ...... # 100.00% ls [unknown] [.] 0000000000000000
# Samples: 0 of event 'syscalls:sys_exit_mmap' # Event count (approx.): 0 # # Overhead Command Shared Object Symbol # ........ ....... ............. ...... #
# Samples: 103 of event 'syscalls:sys_exit_set_tid_address' # Event count (approx.): 103 # # Overhead Command Shared Object Symbol # ........ ........... ................ ...... # 80.58% ls [unknown] [.] 0000000000000000 15.53% kworker/1:1 [unknown] [.] 0000000000000000 1.94% sshd [unknown] [.] 0000000000000000 0.97% swapper [unknown] [.] 0000000000000000 0.97% perf [unknown] [.] 0000000000000000
# Samples: 1 of event 'mce:mce_record' # Event count (approx.): 1 # # Overhead Command Shared Object Symbol # ........ ....... ................ ...... # 100.00% swapper [unknown] [.] 0000000000000000
# # (For a higher level overview, try: perf report --sort comm,dso) #
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