Date: Sat, 5 Oct 2002 11:20:13 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: current@FreeBSD.ORG Subject: Re: Meaning of net.inet.tcp.inflight_debug output? Message-ID: <200210051820.g95IKDgJ038554@apollo.backplane.com> References: <20021004135022.3decb56f.Alexander@Leidinger.net> <200210041834.g94IYkBR003033@apollo.backplane.com> <20021005110923.0c9d9a68.Alexander@Leidinger.net>
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: :On Fri, 4 Oct 2002 11:34:46 -0700 (PDT) :Matthew Dillon <dillon@apollo.backplane.com> wrote: : :> When you turn the debugging on it will print out various :> parameters used to calculate the bandwidth window. The higher the :> debug value, the more often it prints out the stats (assuming a :> TCP is under load). Since the stats may reflect any tcp connection :> you typically only do this while running a single TCP connection :> under heavy load. : :So shouldn't it be off by default? : :> rttbest and srtt are scaled to hz * 32, I believe (I'm not :> positive). So with the default 100 hz it would be scaled to 3200, :> so an rttbest of 680 would translate to 212mS. Sounds like a :> connection over a modem. : :On my side there's a DSL line (768k up / 128k down), I don't know what :was on the other side for this particular example. : :Bye, :Alexander. Well, it's an experimental feature. The whole feature is turned off by default but in -current debugging is turned on by default if you turn the feature on. In -stable debugging is turned off by default to avoid confusion. In anycase, I could change the debugging default to off in -current but I can't do it right this moment. I'll try to remember to do it tonight. -Matt Matthew Dillon <dillon@backplane.com> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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