47902f3611
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. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: fweisbec@gmail.com Cc: rostedt@goodmis.org Cc: k-keiichi@bx.jp.nec.com Cc: acme@ghostprotocols.net LKML-Reference: <1270184365-8281-10-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
79 lines
1.9 KiB
Python
79 lines
1.9 KiB
Python
# system call top
|
|
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
|
|
# Licensed under the terms of the GNU GPL License version 2
|
|
#
|
|
# Periodically displays system-wide system call totals, broken down by
|
|
# syscall. If a [comm] arg is specified, only syscalls called by
|
|
# [comm] are displayed. If an [interval] arg is specified, the display
|
|
# will be refreshed every [interval] seconds. The default interval is
|
|
# 3 seconds.
|
|
|
|
import thread
|
|
import time
|
|
import os
|
|
import 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 *
|
|
|
|
usage = "perf trace -s syscall-counts.py [comm] [interval]\n";
|
|
|
|
for_comm = None
|
|
default_interval = 3
|
|
interval = default_interval
|
|
|
|
if len(sys.argv) > 3:
|
|
sys.exit(usage)
|
|
|
|
if len(sys.argv) > 2:
|
|
for_comm = sys.argv[1]
|
|
interval = int(sys.argv[2])
|
|
elif len(sys.argv) > 1:
|
|
try:
|
|
interval = int(sys.argv[1])
|
|
except ValueError:
|
|
for_comm = sys.argv[1]
|
|
interval = default_interval
|
|
|
|
syscalls = autodict()
|
|
|
|
def trace_begin():
|
|
thread.start_new_thread(print_syscall_totals, (interval,))
|
|
pass
|
|
|
|
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:
|
|
return
|
|
try:
|
|
syscalls[id] += 1
|
|
except TypeError:
|
|
syscalls[id] = 1
|
|
|
|
def print_syscall_totals(interval):
|
|
while 1:
|
|
clear_term()
|
|
if for_comm is not None:
|
|
print "\nsyscall events for %s:\n\n" % (for_comm),
|
|
else:
|
|
print "\nsyscall events:\n\n",
|
|
|
|
print "%-40s %10s\n" % ("event", "count"),
|
|
print "%-40s %10s\n" % ("----------------------------------------", \
|
|
"----------"),
|
|
|
|
for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
|
|
reverse = True):
|
|
try:
|
|
print "%-40d %10d\n" % (id, val),
|
|
except TypeError:
|
|
pass
|
|
syscalls.clear()
|
|
time.sleep(interval)
|