Things I would try, in random order. - Try an ‘owdir /uncached ’ command before writing to simultaneous, just to refresh the owserver view of the devices on the bus. Maybe a single owdir command is faster that querying the sensors one at a time. - Do not use owserver aliases, use only bus addresses (this is just my personal dislike, and some troubles in having a stable working setup with aliases in the past) - Nuclear option: enable the owserver verbose output and try to pinpoint what’s going on when the loop slows down.
Just for reference, here are some stats form my tiny home owserver, with a LinkUSB host adapter and two Link multi sensors. (I’m using walk.py, which you can find here: https://github.com/miccoli/pyownet/blob/dev/examples/walk.py <https://github.com/miccoli/pyownet/blob/dev/examples/walk.py> ) $ python walk.py /statistics/read/ /statistics/read/bytes b' 2442834' /statistics/read/cachebytes b' 0' /statistics/read/cachesuccess b' 0' /statistics/read/calls b' 99461' /statistics/read/success b' 198136' /statistics/read/tries.ALL b' 99464, 0, 0' /statistics/read/tries.0 b' 99465' /statistics/read/tries.1 b' 0' /statistics/read/tries.2 b' 0' $ walk.py /statistics/errors/ /statistics/errors/BUS_bit_errors b' 0' /statistics/errors/BUS_byte_errors b' 0' /statistics/errors/BUS_detect_errors b' 0' /statistics/errors/BUS_echo_errors b' 0' /statistics/errors/BUS_level_errors b' 0' /statistics/errors/BUS_next_alarm_errors b' 0' /statistics/errors/BUS_next_errors b' 0' /statistics/errors/BUS_readin_data_errors b' 0' /statistics/errors/BUS_status_errors b' 0' /statistics/errors/BUS_tcsetattr_errors b' 0' /statistics/errors/CRC16_errors b' 0' /statistics/errors/CRC16_tries b' 0' /statistics/errors/CRC8_errors b' 0' /statistics/errors/CRC8_tries b' 197398' /statistics/errors/DS2480_level_docheck_errors b' 0' /statistics/errors/DS2480_read_fd_isset b' 0' /statistics/errors/DS2480_read_null b' 0' /statistics/errors/DS2480_read_read b' 0' /statistics/errors/NET_accept_errors b' 0' /statistics/errors/NET_connection_errors b' 0' /statistics/errors/NET_read_errors b' 1' /statistics/errors/max_delay b' 0' > On 9 Aug 2020, at 11:38, Martin Patzak <martin.pat...@gmx.de> wrote: > > > > On 09.08.20 11:34, Mick Sulley wrote: >> >> CRC16_tries 11768 >> CRC16_errors 11768 >> > you should not have near that amount of CRC errors > read the errors after every module reading or writing to find out what > causes those errors >> >> Time to do some reading of the docs....... >> > yeah, enjoy and good luck :-) > > > > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers
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