tree 754498a6147b2a6b6a2573f97c161384d64c70ac
parent 2daf52d3a3e2bca45a1157c4f06b1cfe69ef1c7a
author Daniel Willmann <dwillmann@sysmocom.de> 1532935360 +0200
committer Daniel Willmann <dwillmann@sysmocom.de> 1533018313 +0200

BSC_Tests: Avoid race condition between paging cmd and reset ack

Sometimes (under heavy load and when the last paging cmd arrives near
the reset ack) some messages are not enqueued in the IPA_RSL port after
we have received the reset ack from BSSAP.

In the failures I have seen wireshark reports that no paging cmd arrived
after the reset ack, see jenkins job 285:
https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bsc-test/285/

Adding a sleep is always a bit crude, but since the paging cmd is
scheduled through TCP while the reset ack is sent through sctp I don't
see another way.

Running the test under load in a loop showed improvements where I was
not able to reproduce the failure with this patch.

Change-Id: Ib2d60e2c59baf98e437e078d844adcc6dbdbfcd8