On 4/12/2017 10:26 PM, Jiri Olsa wrote:

On Wed, Apr 12, 2017 at 08:25:34PM +0800, Jin, Yao wrote:

SNIP

quoted

quoted

# Overhead  Command  Source Shared Object  Source Symbol                            Target Symbol                            Basic Block Cycles
# ........  .......  ....................  .......................................  .......................................  ..................
#
       8.30%  perf
Um  [kernel.vmlinux]      [k] __intel_pmu_enable_all.constprop.17  [k] native_write_msr                     -
       7.91%  perf
Um  [kernel.vmlinux]      [k] intel_pmu_lbr_enable_all             [k] __intel_pmu_enable_all.constprop.17  -
       7.91%  perf
Um  [kernel.vmlinux]      [k] native_write_msr                     [k] intel_pmu_lbr_enable_all             -
       6.32%  kill     libc-2.24.so          [.] _dl_addr                             [.] _dl_addr                             -
       5.93%  perf
Um  [kernel.vmlinux]      [k] perf_iterate_ctx                     [k] perf_iterate_ctx                     -
       2.77%  kill     libc-2.24.so          [.] malloc                               [.] malloc                               -
       1.98%  kill     libc-2.24.so          [.] _int_malloc                          [.] _int_malloc                          -
       1.58%  kill     [kernel.vmlinux]      [k] __rb_insert_augmented                [k] __rb_insert_augmented                -
       1.58%  perf
Um  [kernel.vmlinux]      [k] perf_event_exec                      [k] perf_event_exec                      -
       1.19%  kill     [kernel.vmlinux]      [k] anon_vma_interval_tree_insert        [k] anon_vma_interval_tree_insert        -
       1.19%  kill     [kernel.vmlinux]      [k] free_pgd_range                       [k] free_pgd_range                       -
       1.19%  kill     [kernel.vmlinux]      [k] n_tty_write                          [k] n_tty_write                          -
       1.19%  perf
Um  [kernel.vmlinux]      [k] native_sched_clock                   [k] sched_clock                          -
...
SNIP


jirka

Hi,

Thanks so much for trying this patch.

The branch statistics is printed at the end of perf report --stdio.

yep, but for some reason with your changes the head report
got changed as well, I haven't checked the details yet..

jirka

The kill returns immediately with no parameter error. Could you try an 
application which can run for a while?

For example:
perf record -j any,save_type top

Thanks
Jin Yao