Greg Kroah-Hartman | 6b0658f | 2015-12-15 12:46:22 -0800 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | # Copyright (c) 2015 Google, Inc. |
| 4 | # Copyright (c) 2015 Linaro, Ltd. |
| 5 | # All rights reserved. |
| 6 | # |
| 7 | # Redistribution and use in source and binary forms, with or without |
| 8 | # modification, are permitted provided that the following conditions are met: |
| 9 | # 1. Redistributions of source code must retain the above copyright notice, |
| 10 | # this list of conditions and the following disclaimer. |
| 11 | # 2. Redistributions in binary form must reproduce the above copyright notice, |
| 12 | # this list of conditions and the following disclaimer in the documentation |
| 13 | # and/or other materials provided with the distribution. |
| 14 | # 3. Neither the name of the copyright holder nor the names of its |
| 15 | # contributors may be used to endorse or promote products derived from this |
| 16 | # software without specific prior written permission. |
| 17 | # |
| 18 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 20 | # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 21 | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
| 22 | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 23 | # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 24 | # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 25 | # OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 26 | # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 27 | # OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 28 | # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | |
| 30 | from __future__ import print_function |
| 31 | import csv |
| 32 | import datetime |
| 33 | import sys |
| 34 | import time |
| 35 | |
| 36 | dict = {'ping': '2', 'transfer': '3', 'sink': '4'} |
| 37 | verbose = 1 |
| 38 | |
| 39 | def abort(): |
| 40 | sys.exit(1) |
| 41 | |
| 42 | def usage(): |
| 43 | print('Usage: looptest TEST SIZE ITERATIONS PATH\n\n' |
| 44 | ' Run TEST for a number of ITERATIONS with operation data SIZE bytes\n' |
| 45 | ' TEST may be \'ping\' \'transfer\' or \'sink\'\n' |
| 46 | ' SIZE indicates the size of transfer <= greybus max payload bytes\n' |
| 47 | ' ITERATIONS indicates the number of times to execute TEST at SIZE bytes\n' |
| 48 | ' Note if ITERATIONS is set to zero then this utility will\n' |
| 49 | ' initiate an infinite (non terminating) test and exit\n' |
| 50 | ' without logging any metrics data\n' |
| 51 | ' PATH indicates the sysfs path for the loopback greybus entries e.g.\n' |
| 52 | ' /sys/bus/greybus/devices/endo0:1:1:1:1/\n' |
| 53 | 'Examples:\n' |
| 54 | ' looptest transfer 128 10000\n' |
| 55 | ' looptest ping 0 128\n' |
| 56 | ' looptest sink 2030 32768\n' |
| 57 | .format(sys.argv[0]), file=sys.stderr) |
| 58 | |
| 59 | abort() |
| 60 | |
| 61 | def read_sysfs_int(path): |
| 62 | try: |
| 63 | f = open(path, "r"); |
| 64 | val = f.read(); |
| 65 | f.close() |
| 66 | return int(val) |
| 67 | except IOError as e: |
| 68 | print("I/O error({0}): {1}".format(e.errno, e.strerror)) |
| 69 | print("Invalid path %s" % path) |
| 70 | |
| 71 | def write_sysfs_val(path, val): |
| 72 | try: |
| 73 | f = open(path, "r+") |
| 74 | f.write(val) |
| 75 | f.close() |
| 76 | except IOError as e: |
| 77 | print("I/O error({0}): {1}".format(e.errno, e.strerror)) |
| 78 | print("Invalid path %s" % path) |
| 79 | |
| 80 | def log_csv(test_name, size, iteration_max, sys_pfx): |
| 81 | # file name will test_name_size_iteration_max.csv |
| 82 | # every time the same test with the same parameters is run we will then |
| 83 | # append to the same CSV with datestamp - representing each test dataset |
| 84 | fname = test_name + '_' + size + '_' + str(iteration_max) + '.csv' |
| 85 | |
| 86 | try: |
| 87 | # gather data set |
| 88 | date = str(datetime.datetime.now()) |
| 89 | error = read_sysfs_int(sys_pfx + 'error') |
| 90 | request_min = read_sysfs_int(sys_pfx + 'requests_per_second_min') |
| 91 | request_max = read_sysfs_int(sys_pfx + 'requests_per_second_max') |
| 92 | request_avg = read_sysfs_int(sys_pfx + 'requests_per_second_avg') |
| 93 | latency_min = read_sysfs_int(sys_pfx + 'latency_min') |
| 94 | latency_max = read_sysfs_int(sys_pfx + 'latency_max') |
| 95 | latency_avg = read_sysfs_int(sys_pfx + 'latency_avg') |
| 96 | throughput_min = read_sysfs_int(sys_pfx + 'throughput_min') |
| 97 | throughput_max = read_sysfs_int(sys_pfx + 'throughput_max') |
| 98 | throughput_avg = read_sysfs_int(sys_pfx + 'throughput_avg') |
| 99 | |
| 100 | # derive jitter |
| 101 | request_jitter = request_max - request_min |
| 102 | latency_jitter = latency_max - latency_min |
| 103 | throughput_jitter = throughput_max - throughput_min |
| 104 | |
| 105 | # append data set to file |
| 106 | with open(fname, 'a') as csvf: |
| 107 | row = csv.writer(csvf, delimiter=",", quotechar="'", |
| 108 | quoting=csv.QUOTE_MINIMAL) |
| 109 | row.writerow([date, test_name, size, iteration_max, error, |
| 110 | request_min, request_max, request_avg, request_jitter, |
| 111 | latency_min, latency_max, latency_avg, latency_jitter, |
| 112 | throughput_min, throughput_max, throughput_avg, throughput_jitter]) |
| 113 | except IOError as e: |
| 114 | print("I/O error({0}): {1}".format(e.errno, e.strerror)) |
| 115 | |
| 116 | def loopback_run(test_name, size, iteration_max, sys_pfx): |
| 117 | test_id = dict[test_name] |
| 118 | try: |
| 119 | # Terminate any currently running test |
| 120 | write_sysfs_val(sys_pfx + 'type', '0') |
| 121 | # Set parameter for no wait between messages |
| 122 | write_sysfs_val(sys_pfx + 'ms_wait', '0') |
| 123 | # Set operation size |
| 124 | write_sysfs_val(sys_pfx + 'size', size) |
| 125 | # Set iterations |
| 126 | write_sysfs_val(sys_pfx + 'iteration_max', str(iteration_max)) |
| 127 | # Initiate by setting loopback operation type |
| 128 | write_sysfs_val(sys_pfx + 'type', test_id) |
| 129 | time.sleep(1) |
| 130 | |
| 131 | if iteration_max == 0: |
| 132 | print ("Infinite test initiated CSV won't be logged\n") |
| 133 | return |
| 134 | |
| 135 | previous = 0 |
| 136 | err = 0 |
| 137 | while True: |
| 138 | # get current count bail out if it hasn't changed |
| 139 | iteration_count = read_sysfs_int(sys_pfx + 'iteration_count') |
| 140 | if previous == iteration_count: |
| 141 | err = 1 |
| 142 | break |
| 143 | elif iteration_count == iteration_max: |
| 144 | break |
| 145 | previous = iteration_count |
| 146 | if verbose: |
| 147 | print('%02d%% complete %d of %d ' % |
| 148 | (100 * iteration_count / iteration_max, |
| 149 | iteration_count, iteration_max)) |
| 150 | time.sleep(1) |
| 151 | if err: |
| 152 | print ('\nError executing test\n') |
| 153 | else: |
| 154 | log_csv(test_name, size, iteration_max, sys_pfx) |
| 155 | except ValueError as ve: |
| 156 | print("Error: %s " % format(e.strerror), file=sys.stderr) |
| 157 | abort() |
| 158 | |
| 159 | def main(): |
| 160 | if len(sys.argv) < 5: |
| 161 | usage() |
| 162 | |
| 163 | if sys.argv[1] in dict.keys(): |
| 164 | loopback_run(sys.argv[1], sys.argv[2], int(sys.argv[3]), sys.argv[4]) |
| 165 | else: |
| 166 | usage() |
| 167 | if __name__ == '__main__': |
| 168 | main() |