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While we are not very interested in testing performance it's useful to be able to generate a lot of traffic. iperf is the simplest way of getting relatively high PPS. Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://lore.kernel.org/r/20240429144426.743476-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
# SPDX-License-Identifier: GPL-2.0
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import time
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from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen
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class GenerateTraffic:
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def __init__(self, env):
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env.require_cmd("iperf3", remote=True)
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self.env = env
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port = rand_port()
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self._iperf_server = cmd(f"iperf3 -s -p {port}", background=True)
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wait_port_listen(port)
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time.sleep(0.1)
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self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {port} -t 86400",
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background=True, host=env.remote)
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# Wait for traffic to ramp up
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pkt = ip("-s link show dev " + env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
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for _ in range(50):
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time.sleep(0.1)
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now = ip("-s link show dev " + env.ifname, json=True)[0]["stats64"]["rx"]["packets"]
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if now - pkt > 1000:
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return
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pkt = now
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self.stop(verbose=True)
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raise Exception("iperf3 traffic did not ramp up")
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def stop(self, verbose=None):
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self._iperf_client.process(terminate=True)
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if verbose:
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ksft_pr(">> Client:")
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ksft_pr(self._iperf_client.stdout)
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ksft_pr(self._iperf_client.stderr)
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self._iperf_server.process(terminate=True)
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if verbose:
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ksft_pr(">> Server:")
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ksft_pr(self._iperf_server.stdout)
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ksft_pr(self._iperf_server.stderr)
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