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RE: netbsd 5 and high speed internet
Thanks guys, using fxp0 did it. Speed test now reports 90+ Mb.
> -----Original Message-----
> From: netbsd-users-owner%NetBSD.org@localhost [mailto:netbsd-users-
> owner%NetBSD.org@localhost] On Behalf Of Greg Troxel
> Sent: Monday, April 21, 2014 10:31 AM
> To: Michael D. Spence
> Cc: 'NetBSD'
> Subject: Re: netbsd 5 and high speed internet
> [netstat -s diff]
> That looks mostly ok. I ask for netstat -s diffs because there are a lot
> useful counters for error cases, and if some of those are incrementing it
> really helps to notice. In your case the only value that jumped out at me
> that there were 30 more out-of-order packets received. That's not a huge
> number out of receiving 15000 packets, and not really cause for concern.
> One thing to figure out is the reason for the lack of full speed. TCP is
> sensitive to loss. So while this may end up being too complicated for
> best path to really understanding what's going on is to first find a way
> download a large file so that you don't rely on a speed test that you
> understand. Using the built-in
> ftp(1) and some free software mirror that's near you (use traceroute) is a
> good plan, to avoid problems farther out in the internet. Then, use
> -w' to save a trace from the WAN-side interface on your router to a file.
> Then, install pkgsrc/math/xplot and read the documentation (in the source
> more than the installed package) for tcpdump2xplot.
> Basically, this takes the tcpdump of the TCP session and turns it into a
> from which you can infer missed packets, out-of-order packets, and
> retransmissions. You can then see if a rate below what you expect is
> or bursty.
> Also, I concur Thor's advice to use the fxp0 interface instead of vr0.
> You might try all three on the WAN side, suing ftp(1) to measure each one.
> Keep careful notes, and refrain from assuming there is only one issue.
> Finally, if you're getting 30 Mbps on a TCP stream, that's likely all
you'll get to
> someplace you actually want to talk to on the Internet anyway, because of
> congestion in the core.
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