Date: Tue, 18 Jan 2000 16:06:38 -0600 (CST) From: Jonathan Lemon <jlemon@americantv.com> To: luigi@info.iet.unipi.it, net@freebsd.org Subject: Re: Feature: net.inet.tcp.local_slowstart ? Message-ID: <200001182206.QAA18388@free.pcs> In-Reply-To: <local.mail.freebsd-net/200001181759.SAA60954@info.iet.unipi.it> References: <local.mail.freebsd-net/200001181749.MAA25359@khavrinen.lcs.mit.edu>
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In article <local.mail.freebsd-net/200001181759.SAA60954@info.iet.unipi.it> you write: >> > may i add a new sysctl variable, >> >> > net.inet.tcp.local_slowstart >> >> In what way is this different from >> `net.inet.tcp.local_slowstart_flightsize'? > >Ok, i did not notice the one you mention. > >Speaking of this one i notice that it is implemented >in a somewhat strange way. > >ss_fltsz_local is set to TCP_MAXWIN (65535) and the assignment >in tcp_input.c is then something like > > p->snd_cwnd = mss * ss_fltsz_local > >dimensionally, this looks to me like bytes^2 ... Flightsize is in terms of 'packets', while cwnd is in bytes, but is usually a multiple of the packet size. The above code just tries to set the cwnd to be essentially unbounded, which is what it was before, I believe. -- Jonathan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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