Attendees: glebius@, Peter Lei, thj@, rscheff@, tuexen@
Gleb is suggesting to remove the compressed TCP TIMEWAIT state. The memory savings are limited, memory is not that critical anymore and it would simplify the code and allow further optimizations of the code. glebius@ will reach out to people if there are some objections. It was also discussed which information would be need to reduce the time a TCP connections stays in TIMEWAIT state. One thing he will implement is a counter how many compressed states where used at all. Discussion has been started on net@.
ECN implementation has been improved. The code is now contained in one file
tcp_ecn.c.
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D21011 is implementing Accurate ECN and has been updated and will be reviewed by rrs@ and tuexen@.
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D30043 is a small whitespace cleanup.
D28822 improves PRR, needs some cleanup.
D34787 It was suggested to keep the TCP as simple as possible via dumping the kernel. tuexen@ will look as the suggestion of markj if disabling LRO will fix the panic.
glebius@ and tuexen@ discussed a panic rrs@ has seen multiple times when using the tcpsso command line utility. It is not yet clear what the problem is. glebius@ will look into this and tuexen@ will try to find a simple way to reproduce it.
thj asks about using vtune for FreeBSD. It was suggested to ask gallatin@.
Next meeting: 21 April 2022 @ 1500 UTC