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  1. 04 3月, 2017 1 次提交
    • C
      perf tools: Allow sorting by symbol size · 7768f8da
      由 Charles Baylis 提交于 
      Add new sort key 'symbol_size' to allow user to sort by symbol size, or
(more usefully) display the symbol size using --fields=...,symbol_size.

Committer note:

Testing it together with the recently added -q, to remove the headers,
and using the '+' sign with -s, to add the symbol_size sort order to
the default, which is '-s/--sort comm,dso,symbol':

  # perf report -q -s +symbol_size | head -10
  10.39%  swapper       [kernel.vmlinux] [k] intel_idle               270
   3.45%  swapper       [kernel.vmlinux] [k] update_blocked_averages 1546
   2.61%  swapper       [kernel.vmlinux] [k] update_load_avg         1292
   2.36%  swapper       [kernel.vmlinux] [k] update_cfs_shares        240
   1.83%  swapper       [kernel.vmlinux] [k] __hrtimer_run_queues     606
   1.74%  swapper       [kernel.vmlinux] [k] update_cfs_rq_load_avg. 1187
   1.66%  swapper       [kernel.vmlinux] [k] apic_timer_interrupt     152
   1.60%  CPU 0/KVM     [kvm]            [k] kvm_set_msr_common      3046
   1.60%  gnome-shell   libglib-2.0.so.0 [.] g_slist_find              37
   1.46%  gnome-termina libglib-2.0.so.0 [.] g_hash_table_lookup      370
  #
Signed-off-by: NCharles Baylis <charles.baylis@linaro.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1487943176-13840-1-git-send-email-charles.baylis@linaro.org
[ Use symbol__size(), remove needless %lld + (long long) casting ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      7768f8da
  3. 02 2月, 2017 1 次提交
  5. 21 10月, 2016 1 次提交
  7. 23 9月, 2016 3 次提交
  9. 21 9月, 2016 1 次提交
  11. 24 8月, 2016 3 次提交
  13. 03 8月, 2016 1 次提交
  15. 12 7月, 2016 1 次提交
  17. 22 6月, 2016 1 次提交
  19. 15 6月, 2016 3 次提交
  21. 23 5月, 2016 1 次提交
    • A
      perf report: Add srcline_from/to branch sort keys · 508be0df
      由 Andi Kleen 提交于 
      Add "srcline_from" and "srcline_to" branch sort keys that allow to show
the source lines of a branch.

That makes it much easier to track down where particular branches happen
in the program, for example to examine branch mispredictions, or to
associate it with cycle counts:

  % perf record -b -e cycles:p ./tcall
  % perf report --sort srcline_from,srcline_to,mispredict
  ...
    15.10%  tcall.c:18       tcall.c:10       N
    14.83%  tcall.c:11       tcall.c:5        N
    14.12%  tcall.c:7        tcall.c:12       N
    14.04%  tcall.c:12       tcall.c:5        N
    12.42%  tcall.c:17       tcall.c:18       N
    12.39%  tcall.c:7        tcall.c:13       N
    12.27%  tcall.c:13       tcall.c:17       N
  ...

  % perf report --sort srcline_from,srcline_to,cycles
  ...
    17.12%  tcall.c:18       tcall.c:11       1
    17.01%  tcall.c:12       tcall.c:6        1
    16.98%  tcall.c:11       tcall.c:6        1
    15.91%  tcall.c:17       tcall.c:18       1
     6.38%  tcall.c:7        tcall.c:17       7
     4.80%  tcall.c:7        tcall.c:12       8
     4.21%  tcall.c:7        tcall.c:17       8
     2.67%  tcall.c:7        tcall.c:12       7
     2.62%  tcall.c:7        tcall.c:12       10
     2.10%  tcall.c:7        tcall.c:17       9
     1.58%  tcall.c:7        tcall.c:12       6
     1.44%  tcall.c:7        tcall.c:12       5
     1.38%  tcall.c:7        tcall.c:12       9
     1.06%  tcall.c:7        tcall.c:17       13
     1.05%  tcall.c:7        tcall.c:12       4
     1.01%  tcall.c:7        tcall.c:17       6

Open issues:

- Some kernel symbols get misresolved.
Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Link: http://lkml.kernel.org/r/1463775308-32748-1-git-send-email-andi@firstfloor.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      508be0df
  23. 06 5月, 2016 7 次提交
  25. 30 3月, 2016 1 次提交
  27. 23 3月, 2016 1 次提交
  29. 11 3月, 2016 2 次提交
  31. 08 3月, 2016 4 次提交
  33. 27 2月, 2016 1 次提交
    • N
      perf report: Fix indentation of dynamic entries in hierarchy · d3a72fd8
      由 Namhyung Kim 提交于 
      When dynamic entries are used in the hierarchy mode with multiple
events, the output might not be aligned properly.  In the hierarchy
mode, the each sort column is indented using total number of sort keys.
So it keeps track of number of sort keys when adding them.  However
a dynamic sort key can be added more than once when multiple events have
same field names.  This results in unnecessarily long indentation in the
output.

For example perf kmem records following events:

  $ perf evlist --trace-fields -i perf.data.kmem
  kmem:kmalloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags
  kmem:kmalloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node
  kmem:kfree: trace_fields: call_site,ptr
  kmem:kmem_cache_alloc: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags
  kmem:kmem_cache_alloc_node: trace_fields: call_site,ptr,bytes_req,bytes_alloc,gfp_flags,node
  kmem:kmem_cache_free: trace_fields: call_site,ptr
  kmem:mm_page_alloc: trace_fields: page,order,gfp_flags,migratetype
  kmem:mm_page_free: trace_fields: page,order

As you can see, many field names shared between kmem events.  So adding
'ptr' dynamic sort key alone will set nr_sort_keys to 6.  And this adds
many unnecessary spaces between columns.

Before:

  $ perf report -i perf.data.kmem --hierarchy -s ptr -g none --stdio
  ...
  #                Overhead                 ptr
  # .......................  ...................................
  #
      99.89%                 0xffff8803ffb79720
       0.06%                 0xffff8803d228a000
       0.03%                 0xffff8803f7678f00
       0.00%                 0xffff880401dc5280
       0.00%                 0xffff880406172380
       0.00%                 0xffff8803ffac3a00
       0.00%                 0xffff8803ffac1600

After:

  # Overhead                 ptr
  # ........  ....................
  #
      99.89%  0xffff8803ffb79720
       0.06%  0xffff8803d228a000
       0.03%  0xffff8803f7678f00
       0.00%  0xffff880401dc5280
       0.00%  0xffff880406172380
       0.00%  0xffff8803ffac3a00
       0.00%  0xffff8803ffac1600
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456512767-1164-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      d3a72fd8
  35. 26 2月, 2016 1 次提交
  37. 25 2月, 2016 5 次提交
  39. 20 2月, 2016 1 次提交