syscall-counts-by-pid.py

Go to the documentation of this file.

# system call counts, by pid
# (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.

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 script -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():
    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 and common_comm != for_comm) or \
       (for_pid  and common_pid  != for_pid ):
        return
    try:
        syscalls[common_comm][common_pid][id] += 1
    except TypeError:
        syscalls[common_comm][common_pid][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\n" % (for_comm),
    else:
        print "\nsyscall events by comm/pid:\n\n",

    print "%-40s  %10s\n" % ("comm [pid]/syscalls", "count"),
    print "%-40s  %10s\n" % ("----------------------------------------", \
                                 "----------"),

    comm_keys = syscalls.keys()
    for comm in comm_keys:
        pid_keys = syscalls[comm].keys()
        for pid in pid_keys:
            print "\n%s [%d]\n" % (comm, pid),
            id_keys = syscalls[comm][pid].keys()
            for id, val in sorted(syscalls[comm][pid].iteritems(), \
                  key = lambda(k, v): (v, k),  reverse = True):
                print "  %-38s  %10d\n" % (syscall_name(id), val),