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Commit a64fa198 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf python scripting: Improve the syscalls-by-pid script 



. Print message at script start telling how to get te summary
. Print the syscall names
. Accept both pid (if numeric) or COMM name

Now it looks like this:

[root@emilia tmp]# perf trace syscall-counts-by-pid
Press control+C to stop and show the summary
^C
syscall events by comm/pid:

comm [pid]/syscalls                            count
----------------------------------------  ----------

automount [1670]
  futex                                            2

sshd [2322]
  rt_sigprocmask                                   4
  select                                           2
  write                                            1
  read                                             1

perf [15178]
  read                                          2506
  open                                           794
  close                                          769
  write                                          240
  getdents                                       112
  lseek                                           16
  stat                                             9
  perf_counter_open                                5
  fcntl                                            5
  mmap                                             5
  statfs                                           2

perf [15179]
  read                                         56701
  open                                           499
  stat                                           176
  fstat                                          149
  close                                          109
  mmap                                            98
  brk                                             75
  rt_sigaction                                    66
  munmap                                          42
  mprotect                                        24
  lstat                                            7
  lseek                                            5
  getdents                                         4
  ioctl                                            3
  readlink                                         2
  futex                                            1
  statfs                                           1
  getegid                                          1
  geteuid                                          1
  getgid                                           1
  getuid                                           1
  getrlimit                                        1
  fcntl                                            1
  uname                                            1
  write                                            1
[root@emilia tmp]# fg
-bash: fg: current: no such job
[root@emilia tmp]# perf trace syscall-counts-by-pid 2322
Press control+C to stop and show the summary
^C
syscall events by comm/pid:

comm [pid]/syscalls                            count
----------------------------------------  ----------

sshd [2322]
  rt_sigprocmask                                   4
  select                                           2
  write                                            1
  read                                             1
[root@emilia tmp]# perf trace syscall-counts-by-pid sshd
Press control+C to stop and show the summary
^C
syscall events for sshd:

comm [pid]/syscalls                            count
----------------------------------------  ----------

sshd [2322]
  rt_sigprocmask                                   4
  select                                           2
  write                                            1
  read                                             1
[root@emilia tmp]#

Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 2e7d1e3f

tools/perf/scripts/python/syscall-counts-by-pid.py

+13 −8
Original line number Diff line number Diff line
@@ -5,29 +5,33 @@ 
# Displays system-wide system call totals, broken down by syscall.

# If a [comm] arg is specified, only syscalls called by [comm] are displayed.



import os

import sys

import os, sys



sys.path.append(os.environ['PERF_EXEC_PATH'] + \

	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')



from perf_trace_context import *

from Core import *

from Util import syscall_name



usage = "perf trace -s syscall-counts-by-pid.py [comm]\n";



for_comm = None

for_pid = None



if len(sys.argv) > 2:

	sys.exit(usage)



if len(sys.argv) > 1:

	try:

		for_pid = int(sys.argv[1])

	except:

		for_comm = sys.argv[1]



syscalls = autodict()



def trace_begin():

	pass

	print "Press control+C to stop and show the summary"



def trace_end():

	print_syscall_totals()
@@ -35,8 +39,9 @@ def trace_end(): 
def raw_syscalls__sys_enter(event_name, context, common_cpu,

	common_secs, common_nsecs, common_pid, common_comm,

	id, args):

	if for_comm is not None:

		if common_comm != for_comm:



	if (for_comm and common_comm != for_comm) or \

	   (for_pid  and common_pid  != for_pid ):

		return

	try:

		syscalls[common_comm][common_pid][id] += 1
@@ -61,4 +66,4 @@ def print_syscall_totals(): 
		    id_keys = syscalls[comm][pid].keys()

		    for id, val in sorted(syscalls[comm][pid].iteritems(), \

				  key = lambda(k, v): (v, k),  reverse = True):

			    print "  %-38d  %10d\n" % (id, val),
 
			    print "  %-38s  %10d\n" % (syscall_name(id), val),