1 # system call counts 2 # (c) 2010, Tom Zanussi <tzanussi@gmail.com> 3 # Licensed under the terms of the GNU GPL License version 2 4 # 5 # Displays system-wide system call totals, broken down by syscall. 6 # If a [comm] arg is specified, only syscalls called by [comm] are displayed. 7 8 from __future__ import print_function 9 10 import os 11 import sys 12 13 sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 14 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 15 16 from perf_trace_context import * 17 from Core import * 18 from Util import syscall_name 19 20 usage = "perf script -s syscall-counts.py [comm]\n"; 21 22 for_comm = None 23 24 if len(sys.argv) > 2: 25 sys.exit(usage) 26 27 if len(sys.argv) > 1: 28 for_comm = sys.argv[1] 29 30 syscalls = autodict() 31 32 def trace_begin(): 33 print("Press control+C to stop and show the summary") 34 35 def trace_end(): 36 print_syscall_totals() 37 38 def raw_syscalls__sys_enter(event_name, context, common_cpu, 39 common_secs, common_nsecs, common_pid, common_comm, 40 common_callchain, id, args): 41 if for_comm is not None: 42 if common_comm != for_comm: 43 return 44 try: 45 syscalls[id] += 1 46 except TypeError: 47 syscalls[id] = 1 48 49 def syscalls__sys_enter(event_name, context, common_cpu, 50 common_secs, common_nsecs, common_pid, common_comm, id, args): 51 raw_syscalls__sys_enter(**locals()) 52 53 def print_syscall_totals(): 54 if for_comm is not None: 55 print("\nsyscall events for %s:\n" % (for_comm)) 56 else: 57 print("\nsyscall events:\n") 58 59 print("%-40s %10s" % ("event", "count")) 60 print("%-40s %10s" % ("----------------------------------------", 61 "-----------")) 62 63 for id, val in sorted(syscalls.items(), 64 key = lambda kv: (kv[1], kv[0]), reverse = True): 65 print("%-40s %10d" % (syscall_name(id), val)) 66