<br><br><div class="gmail_quote">On Sat, May 21, 2011 at 1:11 PM, Jonathan Morton <span dir="ltr"><<a href="mailto:chromatix99@gmail.com">chromatix99@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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On 21 May, 2011, at 5:27 pm, Dave Taht wrote:<br>
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> Experience the pain of the Internet on another continent! (note that the gw is up on ipv6 as well)<br>
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</div>Well, it's not very fast in terms of throughput, but the latency seems to be about as good as I get normally. </blockquote><div><br>It's simulating conditions in South Africa, with settings to 840 down/380 up.<br>
<br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> But perhaps that's because I'm starting from Northern Europe and so I'm already used to intercontinental traffic due to the prevalence of US-based servers.<br>
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I do see occasional brief stalls during the download, but these are substantially less intrusive than what I get on my 3G modem. They suggest that packets are being dropped at reasonably regular intervals, but the TCP is recovering quickly. I can't tell whether RED is triggering (without ECN) or whether these are tail-drops on a fairly short queue.<br>
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Incidentally my download is coming across IPv6, so it may be triggering the related Linux bug. </blockquote><div><br>Which one? on my side all known bugs are fixed. :)<br><br><br> </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
This shouldn't totally disable the negotiation though, so more likely there's a broken router in the way.<br>
<font color="#888888"><br></font></blockquote><div><br>And it is highly likely you are interacting with slightly different layer of QoS if you are using IPv6.<br><br>Could you take a tcpdump capture and stick it somewhere? Or let me know when you will be running a test and I'll capture traces from here? I did see the wan light flicker madly a few minutes ago....<br>
<br>How be your latency under load too?<br><br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><font color="#888888">
- Jonathan<br>
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</font></blockquote></div><br><br clear="all"><br>-- <br>Dave Täht<br>SKYPE: davetaht<br>US Tel: 1-239-829-5608<br><a href="http://the-edge.blogspot.com" target="_blank">http://the-edge.blogspot.com</a> <br>