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0f5f5bcd11
This provides valuable information for tracing performance problems. Since this change alters the interface for the python scripts, also adjust the script generation and the provided scripts. Signed-off-by: Joseph Schuchart <joseph.schuchart@tu-dresden.de> Acked-by: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Ilsche <thomas.ilsche@tu-dresden.de> Link: http://lkml.kernel.org/r/53BE7E1B.10503@tu-dresden.de Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
# system call top
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# (c) 2010, Tom Zanussi <tzanussi@gmail.com>
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# Licensed under the terms of the GNU GPL License version 2
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#
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# Periodically displays system-wide system call totals, broken down by
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# syscall. If a [comm] arg is specified, only syscalls called by
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# [comm] are displayed. If an [interval] arg is specified, the display
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# will be refreshed every [interval] seconds. The default interval is
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# 3 seconds.
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import os, sys, thread, time
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sys.path.append(os.environ['PERF_EXEC_PATH'] + \
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'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
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from perf_trace_context import *
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from Core import *
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from Util import *
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usage = "perf script -s sctop.py [comm] [interval]\n";
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for_comm = None
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default_interval = 3
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interval = default_interval
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if len(sys.argv) > 3:
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sys.exit(usage)
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if len(sys.argv) > 2:
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for_comm = sys.argv[1]
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interval = int(sys.argv[2])
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elif len(sys.argv) > 1:
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try:
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interval = int(sys.argv[1])
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except ValueError:
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for_comm = sys.argv[1]
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interval = default_interval
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syscalls = autodict()
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def trace_begin():
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thread.start_new_thread(print_syscall_totals, (interval,))
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pass
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def raw_syscalls__sys_enter(event_name, context, common_cpu,
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common_secs, common_nsecs, common_pid, common_comm,
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common_callchain, id, args):
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if for_comm is not None:
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if common_comm != for_comm:
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return
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try:
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syscalls[id] += 1
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except TypeError:
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syscalls[id] = 1
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def syscalls__sys_enter(event_name, context, common_cpu,
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common_secs, common_nsecs, common_pid, common_comm,
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id, args):
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raw_syscalls__sys_enter(**locals())
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def print_syscall_totals(interval):
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while 1:
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clear_term()
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if for_comm is not None:
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print "\nsyscall events for %s:\n\n" % (for_comm),
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else:
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print "\nsyscall events:\n\n",
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print "%-40s %10s\n" % ("event", "count"),
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print "%-40s %10s\n" % ("----------------------------------------", \
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"----------"),
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for id, val in sorted(syscalls.iteritems(), key = lambda(k, v): (v, k), \
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reverse = True):
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try:
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print "%-40s %10d\n" % (syscall_name(id), val),
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except TypeError:
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pass
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syscalls.clear()
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time.sleep(interval)
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