on_sample_lost

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fps
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on_sample_lost

Hi,

We have a writer that sends a message to 5 readers at 1hz. Every few hours we see on_sample_lost being called on all of the readers. It's only called once, but each time it says that 7 samples were lost. Nothing unusual is reported on the writer. I'd like to investigate the cause and would appreciate any suggestions.

  • We use a deadline of 2 seconds for both readers and writers
  • KEEP_LAST_HISTORY_QOS is 16
  • Reliability is set to RELIABLE_RELIABILITY_QOS for both readers and writers
  • The publish mode is ASYNCHRONOUS_PUBLISH_MODE_QOS
  • We're using UDP multicast

Any suggestions would be appreciated

Thanks,
Fidel

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fps
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Last seen: 1 year 11 months ago
Joined: 01/17/2013
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In the end this was caused by a low level HW interrupt that was stalling the entire OS for up to 4 seconds at a time