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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>
78 lines
2.2 KiB
Python
78 lines
2.2 KiB
Python
# failed system call counts, by pid
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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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# Displays system-wide failed system call totals, broken down by pid.
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# If a [comm] arg is specified, only syscalls called by [comm] are displayed.
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import os
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import sys
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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 syscall-counts-by-pid.py [comm|pid]\n";
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for_comm = None
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for_pid = None
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if len(sys.argv) > 2:
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sys.exit(usage)
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if len(sys.argv) > 1:
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try:
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for_pid = int(sys.argv[1])
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except:
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for_comm = sys.argv[1]
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syscalls = autodict()
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def trace_begin():
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print "Press control+C to stop and show the summary"
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def trace_end():
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print_error_totals()
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def raw_syscalls__sys_exit(event_name, context, common_cpu,
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common_secs, common_nsecs, common_pid, common_comm,
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common_callchain, id, ret):
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if (for_comm and common_comm != for_comm) or \
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(for_pid and common_pid != for_pid ):
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return
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if ret < 0:
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try:
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syscalls[common_comm][common_pid][id][ret] += 1
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except TypeError:
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syscalls[common_comm][common_pid][id][ret] = 1
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def syscalls__sys_exit(event_name, context, common_cpu,
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common_secs, common_nsecs, common_pid, common_comm,
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id, ret):
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raw_syscalls__sys_exit(**locals())
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def print_error_totals():
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if for_comm is not None:
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print "\nsyscall errors for %s:\n\n" % (for_comm),
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else:
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print "\nsyscall errors:\n\n",
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print "%-30s %10s\n" % ("comm [pid]", "count"),
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print "%-30s %10s\n" % ("------------------------------", \
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"----------"),
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comm_keys = syscalls.keys()
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for comm in comm_keys:
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pid_keys = syscalls[comm].keys()
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for pid in pid_keys:
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print "\n%s [%d]\n" % (comm, pid),
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id_keys = syscalls[comm][pid].keys()
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for id in id_keys:
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print " syscall: %-16s\n" % syscall_name(id),
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ret_keys = syscalls[comm][pid][id].keys()
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for ret, val in sorted(syscalls[comm][pid][id].iteritems(), key = lambda(k, v): (v, k), reverse = True):
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print " err = %-20s %10d\n" % (strerror(ret), val),
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