m-lab / ndt

Network Diagnostic Tool
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ndt tests are hanging if I try to run simultaneously from 2 browsers #77

Open ymilner opened 7 years ago

ymilner commented 7 years ago

Hi,

We try to use ndt server to measure bandwidth from user’s PCs. We noticed that if the tests are run from one browser from start till end then all is fine, but if during first test we try to run second test (from another browser on the same / different machine) then second test is hanging and never complete.

Attached 2 log files with successful and failed use cases, the failure happens after second test not able to open websocket on port 3002/3003.

operating system: Linux tordevndt02.devotn.ca 2.6.32-642.13.1.el6.web100.x86_64 #1 SMP Tue Jan 17 07:11:00 PST 2017 x86_64 x86_64 x86_64 GNU/Linux ndt server version: ndt-3.7.0.2-1.el6.x86_64 browser: Chrome Version 56.0.2924.87

Any idea what is wrong? What can be done to troubleshoot such issue?

ymilner commented 7 years ago

failed_test.txt success_test.txt