Re: [Linuxptp-users] FYI - TX Timestamp Timeout Fix
PTP IEEE 1588 stack for Linux
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From: Miroslav L. <mli...@re...> - 2022-07-28 07:31:48
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On Wed, Jul 27, 2022 at 01:41:23PM -0700, Cliff Spradlin via Linuxptp-users wrote: > I just wanted to share the results of an investigation on TX timestamp > timeout problems my project has been experiencing. The tl;dr is that > the pfifo_fast qdisc suffers from data ordering bugs which can cause > outgoing packets to get forgotten / stuck in the outgoing buffer. > Those may have been fixed in newer kernel versions, but my solution > was to switch to the pfifo qdisc which uses much less sophisticated > codepaths. Very interesting. Thanks for sharing. -- Miroslav Lichvar |