Date: Wed, 23 Jan 2019 20:33:33 +0000 From: "Scheffenegger, Richard" <Richard.Scheffenegger@netapp.com> To: "freebsd-transport@freebsd.org" <freebsd-transport@freebsd.org>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: RFC8312 Cubic Message-ID: <SN4PR0601MB3728AC1A0E08DEF47B0EA3C686990@SN4PR0601MB3728.namprd06.prod.outlook.com>
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Hi, we encounted an issue with the BSD11 cubic implementation during testing, when dealing with app-stalled and app-limited traffic patterns. The gist is, that at least in the after_idle cong_func for cubic, the states for ssthresh and cubic epoch time are not reset, leading to excessive cwnd values (overflows even) and self-inflicted drops due to dramatic burst transmissions. Bug Report, or Patch directly to Phabricator (when it is fully qualified)? Best regards, Richard
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