Cellular Network Infrastructure » OsmoGSMTester

Blocked since we don't have more than 1 EC20 currently connected to osmo-gsm-tester (SYS#4381). Once we have it, I can start working on related tests. I'll do test which tests running several iperf3 sessions concurrently, 1 per MS.

For test case regarding CS<->PS, see #2204. Similar stuff is already implemented for dynamic timeslots in "dynts" suite.

We do have several EC20 now. 5 in prod, 2 in RnD.

Submitted in:
remote: https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/11770 resources.conf.rnd: gobi2k changed by ec20
remote: https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/11771 iperf3: Allow changing port of iperf3 server
remote: https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/11772 iperf3: implement str() method in iperf3 server
remote: https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/11773 tests: iperf3: Support testing parallel iperf3 clients in test

I tested with 2 MS in RnD (there's only 2 EC20 there) and everything looks fine, speed looks similar for both too:

17:14:46.104085 tst                    iperf3m2.py:8: Results for 10.42.42.10:5003 through "'/gobi_0/context2'" 
17:14:46.524630 tst                    iperf3m2.py:8: RESULT client:
17:14:47.008315 tst                    iperf3m2.py:8:   SEND: 34 KB, 27 kbps, 10 seconds (0 retrans)
17:14:47.423142 tst                    iperf3m2.py:8:   RECV: 26 KB, 20 kbps, 10 seconds
17:14:47.834763 tst                    iperf3m2.py:8: RESULT server:
17:14:48.241442 tst                    iperf3m2.py:8:   SEND: 34 KB, 27 kbps, 10 seconds
17:14:48.645650 tst                    iperf3m2.py:8:   RECV: 26 KB, 20 kbps, 10 seconds

17:14:49.075994 tst                    iperf3m2.py:8: Results for 10.42.42.10:5004 through "'/gobi_3/context2'" 
17:14:49.463149 tst                    iperf3m2.py:8: RESULT client:
17:14:49.861120 tst                    iperf3m2.py:8:   SEND: 36 KB, 28 kbps, 10 seconds (0 retrans)
17:14:50.246101 tst                    iperf3m2.py:8:   RECV: 28 KB, 23 kbps, 10 seconds
17:14:50.636707 tst                    iperf3m2.py:8: RESULT server:
17:14:51.032964 tst                    iperf3m2.py:8:   SEND: 36 KB, 28 kbps, 10 seconds
17:14:51.428671 tst                    iperf3m2.py:8:   RECV: 28 KB, 23 kbps, 10 seconds

I submitted the patch to test it with 4 concurrent MS, only available in Prod.

Merged, closing.