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# system call counts
# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
# Licensed under the terms of the GNU GPL License version 2
#
# Displays system-wide system call totals, broken down by syscall.
# If a [comm] arg is specified, only syscalls called by [comm] are displayed.
from __future__ import print_function
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 syscall_name
usage = "perf script -s syscall-counts.py [comm]\n";
for_comm = None
if len(sys.argv) > 2:
sys.exit(usage)
if len(sys.argv) > 1:
for_comm = sys.argv[1]
syscalls = autodict()
def trace_begin():
print("Press control+C to stop and show the summary")
def trace_end():
print_syscall_totals()
def raw_syscalls__sys_enter(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
common_callchain, id, args):
if for_comm is not None:
if common_comm != for_comm:
return
try:
syscalls[id] += 1
except TypeError:
syscalls[id] = 1
def syscalls__sys_enter(event_name, context, common_cpu,
common_secs, common_nsecs, common_pid, common_comm,
id, args):
raw_syscalls__sys_enter(**locals())
def print_syscall_totals():
if for_comm is not None:
print("\nsyscall events for %s:\n" % (for_comm))
else:
print("\nsyscall events:\n")
print("%-40s %10s" % ("event", "count"))
print("%-40s %10s" % ("----------------------------------------",
"-----------"))
for id, val in sorted(syscalls.items(), key = lambda kv: (kv[1], kv[0]), \
reverse = True):
print("%-40s %10d" % (syscall_name(id), val))
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