pmctest.py revision 231634 
1#!/usr/bin/env python
2# Copyright (c) 2012, Neville-Neil Consulting
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met:
8#
9# Redistributions of source code must retain the above copyright notice,
10# this list of conditions and the following disclaimer.
11#
12# Redistributions in binary form must reproduce the above copyright
13# notice, this list of conditions and the following disclaimer in the
14# documentation and/or other materials provided with the distribution.
15#
16# Neither the name of Neville-Neil Consulting nor the names of its
17# contributors may be used to endorse or promote products derived from
18# this software without specific prior written permission.
19#
20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31#
32# Author: George V. Neville-Neil
33#
34# $FreeBSD: head/tools/test/hwpmc/pmctest.py 231634 2012-02-14 04:18:59Z gnn $
35
36# Description: A program to run a simple program against every available
37# pmc counter present in a system.
38#
39# To use:
40#
41# pmctest.py ls > /dev/null
42#
43# This should result in ls being run with every available counter
44# and the system should neither lock up nor panic.
45
46import sys
47import subprocess
48from subprocess import PIPE
49
50# A list of strings that are not really counters, just
51# name tags that are output by pmccontrol -L
52notcounter = ["IAF", "IAP", "TSC", "UNC", "UCF"]
53
54def main():
55
56    if (len(sys.argv) != 2):
57        print ("usage: pmctest.py program")
58
59    program = sys.argv[1]
60
61    p = subprocess.Popen(["pmccontrol", "-L"], stdout=PIPE)
62    counters = p.communicate()[0]
63
64    if len(counters) <= 0:
65        print "no counters found"
66        sys.exit()
67
68    for counter in counters.split():
69        if counter in notcounter:
70            continue
71        p = subprocess.Popen(["pmcstat", "-p", counter, program], stdout=PIPE)
72        result = p.communicate()[0]
73        print result
74
75# The canonical way to make a python module into a script.
76# Remove if unnecessary.
77
78if __name__ == "__main__":
79    main()
80