1AUTHOR = "kdlucas@google.com (Kelly Lucas)" 2TIME = "SHORT" 3NAME = "Netpipe Basic" 4TEST_CATEGORY = "Stress" 5TEST_CLASS = 'Hardware' 6TEST_TYPE = "Server" 7SYNC_COUNT = 2 8DOC = """ 9netpipe_test is a test which produces bandwidth and latency values for 10incrementing buffer sizes. 11 12Arguments to run_test: 13bidirectional - indicates whether the test should run simultaneously in both 14 directions 15buffer_size - Sets the send and receive TCP buffer sizes (from man NPtcp) 16upper_bound - Specify the upper boundary to the size of message being tested. 17 By default, NetPIPE will stop when the time to transmit a block 18 exceeds one second. (from man NPtcp) 19variance - NetPIPE chooses the message sizes at regular intervals, 20 increasing them exponentially from the lower boundary to the 21 upper boundary. At each point, it also tests perturbations of 3 22 bytes above and 3 bytes below (default) each test point to find 23 idiosyncrasies in the system. This perturbation value can be 24 changed using using this option or turned off by setting 25 perturbation_size to 0. (from man NPtcp) 26""" 27 28from autotest_lib.server import utils 29 30buffer_size = 1048576 31upper_bound = 1048576 32variance = 17 33 34def run(pair): 35 job.run_test('netpipe', pair=pair, buffer=buffer_size, 36 upper_bound=upper_bound, variance=variance) 37 38# grab the pairs (and failures) 39(pairs, failures) = utils.form_ntuples_from_machines(machines, 2) 40 41# log the failures 42for failure in failures: 43 job.record("FAIL", failure[0], "netpipe", failure[1]) 44 45# now run through each pair and run 46job.parallel_simple(run, pairs, log=False) 47