Attendees:  rgrimes@, rrs@, rscheff@, thj@, tuexen@

= Discussion =
 * tuexen discussed how to mitigate blackhole detection problems
   * tuexen@ has a review to ensure we don't do blackhole detection once we are at the minimum value [[https://reviews.freebsd.org/D24308|D24308]]; committed
   * Discussion on what should trigger blackhole detection -- full size? Or, even smaller messages which are above our min MTU? For at least IPv6, min MTU makes sense.
   * Otherwise, tuexen@'s plan remains unchanged.
   * BBR and RACK needs some modifcation
 * Discussion of [[https://reviews.freebsd.org/D24237|D24237]]: rscheff@ changed both the in-order and out-of-order data path so we call sorwakeup_locked() [when necessary] after the SACK blocks are updated. Still ongoing. rrs@ will review.
 * [[https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241958 | PR241958]]: Not sure what happens there. tuexen will try to reproduce it on stable/12 in VBox. thj@ has reproduced this on bhyve.
 * [[https://reviews.freebsd.org/D18624 | D18624]]: Approved by kbowling@.
 * Can the TCP_STATS framework be turned on and sample no connections? Yes. thj@ will do.
 * [[https://reviews.freebsd.org/D18892 | D18892]]: Upcoming: PRR
 * [[https://reviews.freebsd.org/D18985 | D18985]]: Upcoming: Rescue retransmission
 * [[https://reviews.freebsd.org/D21117 | D21117]]: Upcoming: Reduce counter space
 * [[https://reviews.freebsd.org/D22438 | D22438]]: Upcoming: Performance improvement for after idle
 * [[https://reviews.freebsd.org/D25746 | D25746]]: Cubic fix. Waiting for NetAPP testing.
 * [[https://reviews.freebsd.org/D25976 | D25976]]: Another Cubic fix. Waiting for NetAPP testing.
 * Cubic: When to increase the congestion window? Once per tick instead of once per send window or when an ACK comes in? Once per ACK is suggested. rscheff@ will provide a patch?
 * [[https://reviews.freebsd.org/D6611 | D6611]], [[https://reviews.freebsd.org/D6612 | D6612]], [[https://reviews.freebsd.org/D6656 | D6656]]: Get gallatin@ involved. What needs to be done to also support IPv6?
 * [[https://reviews.freebsd.org/D8253 | D8253]]: rscheff@ will look into it.
 * [[https://reviews.freebsd.org/D10894 | D10894]]: possibly use hystart++ instead. rrs@ will look into this later this year.
 * Anyone using NICs with P4 support? 

Next meeting: 27 August @ 1400 UTC