osmo-bts-trx fails frequently on osmo-gsm-tester

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Tomcsányi, Domonkos domi at tomcsanyi.net
Fri Jun 23 06:58:00 UTC 2017


On Ubuntu they maintain a version of the kernel called "lowlatency" (linux-image-lowlatency), it might be worth a try.

Regards,
Domi


2017. jún. 23. dátummal, 4:52 időpontban Neels Hofmeyr <nhofmeyr at sysmocom.de> írta:

> We're still having massive stability problems with osmo-bts-trx on the osmo-gsm-tester.
> 
> I have run a tcpdump on the ntp port for the past days, and nothing is doing
> ntp besides the actual ntp service.
> 
> Today I started ntp while an osmo-bts-trx run was active and what do you know,
> the osmo-bts-trx process exits immediately. I think this is bad, osmo-bts-trx
> shouldn't use wall clock time for precise timing needs.
> 
> Besides that, I have no idea what could cause the clock skews, except maybe
> that the CPU or the USB are not fast enough??  I'm wondering, is there still
> such a thing as a separate linux realtime kernel?
> 
> We will soon take to productive use another main unit which will be a cleanly
> installed OS. If we see the same problems on that system and can't find a
> software fix, we may need to reconsider the tester for osmo-bts-trx...
> 
> ~N


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