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Date:      Fri, 19 Feb 2021 13:48:22 +0000
From:      "Scheffenegger, Richard" <Richard.Scheffenegger@netapp.com>
To:        "re@freebsd.org" <re@freebsd.org>, Glen Barber <gjb@freebsd.org>
Cc:        "transport@freebsd.org" <transport@freebsd.org>
Subject:   approval for D28780 / 853fd7a2e39802e46bd3d6476529796ac22412d9
Message-ID:  <SN4PR0601MB3728F2C95010B94345239B6186849@SN4PR0601MB3728.namprd06.prod.outlook.com>

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Hi Glen,

I received feedback around PRR which shows up as a performance degradation.

I would like to MFC this commit in about one week into STABLE/13, and ideal=
ly to releng/13.0 around the same time (or should there be at least 3 days =
linger time in STABLE, after one week in HEAD)?

https://reviews.freebsd.org/D28780


Under some circumstances, PRR may end up with a fully
collapsed cwnd when finalizing the loss recovery.

Also, in case PRR is working against an empty scoreboard,
a possibilty for an integer overflow exists. Performing
signed arithmetics to address a possible sudden jump of cwnd.



Richard Scheffenegger




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