Date: Sun, 13 Nov 2011 17:02:02 -0700 From: Jason Wolfe <nitroboost@gmail.com> To: Erich Weiler <weiler@soe.ucsc.edu> Cc: freebsd-net@freebsd.org, grenville armitage <garmitage@swin.edu.au> Subject: Re: Arg. TCP slow start killing me. Message-ID: <CAAAm0r0TO5ifZ_-s%2BJEN5jwRNuZQq=8t6zRRKSnfPBTO2Rb%2Bng@mail.gmail.com> In-Reply-To: <4EC0585F.5000104@soe.ucsc.edu> References: <4EC033B7.5080609@soe.ucsc.edu> <4EC0395C.3030302@swin.edu.au> <4EC055CB.40100@soe.ucsc.edu> <4EC0585F.5000104@soe.ucsc.edu>
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On Sun, Nov 13, 2011 at 4:53 PM, Erich Weiler <weiler@soe.ucsc.edu> wrote: > I suspect my firewall *is* the cause of the packet loss, unfortunately. >> We're sending multiple streams in from multiple sources and >> destinations, but the aggregate bandwidth coming into the firewall is >> consistent no matter how many sources and destinations we have. It maxes >> at about 2Gb/s. That's why I was trying to tweak the firewall, to try >> and get that number up. >> > > Sorry, to be clear, the *average* bandwidth was like 2Gb/s, I'm really > trying to dodge the sawtooth traffic pattern in some way, I see it go up to > 3Gb/s every once in a while. I was hoping to achieve getting closer to > 3Gb/s on average by adding buffers to my firewall, but maybe that isn't the > answer... > > I tried Jason's suggestions earlier but it didn't seem to help much > unfortunately. Yeah, skimming fail, I didn't realize the machine was not the termination point of your connections. I do have patches back ported that would likely get the modular congestion control working on 8.1, but neither my suggestions nor the implementation of Cubic will help much as mentioned. Jasonhome | help
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