perf trace/scripting: Add rwtop and sctop scripts

A couple of scripts, one in Python and the other in Perl, that demonstrate 'live mode' tracing. For each, the output of the perf event stream is fed continuously to the script, which continuously aggregates the data and reports the current results every 3 seconds, or at the optionally specified interval. After the current results are displayed, the aggregations are cleared and the cycle begins anew. To run the scripts, simply pipe the output of the 'perf trace record' step as input to the corresponding 'perf trace report' step, using '-' as the filename to -o and -i: $ perf trace record sctop -o - | perf trace report sctop -i - Also adds clear_term() utility functions to the Util.pm and Util.py utility modules, for use by any script to clear the screen.

Tom Zanussi committed 16 years ago

Commit 47902f31 parent c7929e48 files · +315 −0Browse files

Showing the changes to tools/perf/scripts/python (4 of 8 files). Show all

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tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py +3 −0
tools/perf/scripts/python/bin/sctop-record +2 −0
tools/perf/scripts/python/bin/sctop-report +24 −0
tools/perf/scripts/python/sctop.py +78 −0

tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py+3−0

@@ -23,3 +23,6 @@ def nsecs_nsecs(nsecs): · 22 unmodified lines
23	def nsecs_str(nsecs):	23	def nsecs_str(nsecs):
24	str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),	24	str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
25	return str	25	return str
		26
		27	def clear_term():
		28	print("\x1b[H\x1b[2J")

tools/perf/scripts/python/bin/sctop-record+2−0

@@ -0,0 +1,2 @@
	1	#!/bin/bash
	2	perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter $@

tools/perf/scripts/python/bin/sctop-report+24−0

@@ -0,0 +1,24 @@
	1	#!/bin/bash
	2	# description: syscall top
	3	# args: [comm] [interval]
	4	n_args=0
	5	for i in "$@"
	6	do
	7	if expr match "$i" "-" > /dev/null ; then
	8	break
	9	fi
	10	n_args=$(( $n_args + 1 ))
	11	done
	12	if [ "$n_args" -gt 2 ] ; then
	13	echo "usage: sctop-report [comm] [interval]"
	14	exit
	15	fi
	16	if [ "$n_args" -gt 1 ] ; then
	17	comm=$1
	18	interval=$2
	19	shift 2
	20	elif [ "$n_args" -gt 0 ] ; then
	21	interval=$1
	22	shift
	23	fi
	24	perf trace $@ -s ~/libexec/perf-core/scripts/python/sctop.py $comm $interval

tools/perf/scripts/python/sctop.py+78−0

@@ -0,0 +1,78 @@
	1	# system call top
	2	# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
	3	# Licensed under the terms of the GNU GPL License version 2
	4	#
	5	# Periodically displays system-wide system call totals, broken down by
	6	# syscall. If a [comm] arg is specified, only syscalls called by
	7	# [comm] are displayed. If an [interval] arg is specified, the display
	8	# will be refreshed every [interval] seconds. The default interval is
	9	# 3 seconds.
	10
	11	import thread
	12	import time
	13	import os
	14	import sys
	15
	16	sys.path.append(os.environ['PERF_EXEC_PATH'] + \
	17	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
	18
	19	from perf_trace_context import *
	20	from Core import *
	21	from Util import *
	22
	23	usage = "perf trace -s syscall-counts.py [comm] [interval]\n";
	24
	25	for_comm = None
	26	default_interval = 3
	27	interval = default_interval
	28
	29	if len(sys.argv) > 3:
	30	sys.exit(usage)
	31
	32	if len(sys.argv) > 2:
	33	for_comm = sys.argv[1]
	34	interval = int(sys.argv[2])
	35	elif len(sys.argv) > 1:
	36	try:
	37	interval = int(sys.argv[1])
	38	except ValueError:
	39	for_comm = sys.argv[1]
	40	interval = default_interval
	41
	42	syscalls = autodict()
	43
	44	def trace_begin():
	45	thread.start_new_thread(print_syscall_totals, (interval,))
	46	pass
	47
	48	def raw_syscalls__sys_enter(event_name, context, common_cpu,
	49	common_secs, common_nsecs, common_pid, common_comm,
	50	id, args):
	51	if for_comm is not None:
	52	if common_comm != for_comm:
	53	return
	54	try:
	55	syscalls[id] += 1
	56	except TypeError:
	57	syscalls[id] = 1
	58
	59	def print_syscall_totals(interval):
	60	while 1:
	61	clear_term()
	62	if for_comm is not None:
	63	print "\nsyscall events for %s:\n\n" % (for_comm),
	64	else:
	65	print "\nsyscall events:\n\n",
	66
	67	print "%-40s %10s\n" % ("event", "count"),
	68	print "%-40s %10s\n" % ("----------------------------------------", \
	69	"----------"),
	70
	71	for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
	72	reverse = True):
	73	try:
	74	print "%-40d %10d\n" % (id, val),
	75	except TypeError:
	76	pass
	77	syscalls.clear()
	78	time.sleep(interval)