Matthias Urlichs <sm...@smurf.noris.de> writes:
> Hi,
>
> Steinar Midtskogen:
>> In some directory listings for the hubs, I notice that the hub
>> (1F.xxx) and others on hte main bus reappear. Is that an error?
>>
> Yes. That shouldn't happen.
I'm suspecting that this is another issue, and less harmful. Both of
the other problems, unreadable files and owserver crashing/dying seem
to be unrelated to hubs on closer inspection. I'm now reproducing
both issues on a bus without hubs with only 5 devices.
The problem seems to be that owserver is relatively fine as long as
the requests come in an orderly fashion, such as in this script:
#!/bin/sh
while true; do
owget -s 3000 uncached/10.7F1914000800/temperature
owget -s 3000 20.E0C700000000/volt.ALL
owget -s 3000 uncached/1D.0A5201000000/counters.A
owget -s 3000 10.7F1914000800/temperature
owget -s 3000 26.22FB4F000000/temperature
owget -s 3000 26.22FB4F000000/VDD
sleep 2
done
But if I change the script to requesting everything at the same time,
like this:
#!/bin/sh
while true; do
owget -s 3000 uncached/10.7F1914000800/temperature &
owget -s 3000 20.E0C700000000/volt.ALL &
owget -s 3000 uncached/1D.0A5201000000/counters.A &
owget -s 3000 10.7F1914000800/temperature &
owget -s 3000 26.22FB4F000000/temperature &
owget -s 3000 26.22FB4F000000/VDD &
sleep 5
done
then owserver breaks within seconds, owget processes pile up because
owserver doesn't respond for some files. Eventally owserver might crash.
In this case it seems to be both temperature and VDD in
26.22FB4F000000 that become unreadable (owget never finishes).
Everything is fine again for some seconds if I restart owserver.
This is bad for my logger program, since it intends to leave all
queueing issues to owserver.
--
Steinar ; NIL DIFFICILE VOLENTI ; http://latinitas.org ; http://voksenlia.net
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