<div dir="ltr">Hello, <div><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br><span style="font-size:12.8px">Um, I wasn't sure if I should mention it, because it doesn't seem like it should be able to cause these kinds of issues. But, if you're using steam </span><i style="font-size:12.8px">on linux</i><span style="font-size:12.8px">, there's a known bug where it makes hundreds (thousands?) of DNS queries per second, during downloads, which can cause issues if the DNS server on your router starts throttling. I don't know how or if that should affect the apparent performance of cake in different tests. But the workaround is to have a local DNS</span> </blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span style="font-size:12.8px">cache like dnsmasq on your host (and of course it's not an issue on Windows machines).</span></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> </blockquote><div><div class="gmail_extra"><br></div><div class="gmail_extra">All of my testing were done on Windows machines. My main test PC1 is using the latest Windows 10 update (Creators Update), while the other PC2 is using the latest Windows 8.1.</div><div class="gmail_extra"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br><span style="font-size:12.8px">That is strange, if you are running the ping tests from the same PC<br></span><span style="font-size:12.8px">maybe there is something strange going on with windows.</span></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote><div> </div><div>I tested on both of my PCs. Also I didn't just do ping tests, but used real application like TeamSpeak or games with in-game network tools to analyze the issue. You can find my Ubiquiti Forums post with some more info in one of the earlier mail I sent.</div><div class="gmail_extra"><br></div><div class="gmail_extra"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">What's your RTT(ping) to the different services, like Steam and Windows Update? Some ISPs have local CDNs that can give incredibly low latency relative to the provisioned bandwidth, which can cause bad things to happen with TCP.</div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote><div><br></div><div>I tried Battle.net and Steam (manually starting a Windows Update is rather difficult) and it seems Battle.net servers are closer compared to the Steam ones (and as I said I don't have the same issues with Battle.net).</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="gmail-h5">On Tue, Apr 25, 2017 at 3:44 PM, Dendari Marini <span dir="ltr"><<a href="mailto:dendari92@gmail.com" target="_blank">dendari92@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class="gmail-h5"><div dir="ltr"><span><div class="gmail_extra"><br><div class="gmail_quote">On 25 April 2017 at 21:10, Jonathan Morton <span dir="ltr"><<a href="mailto:chromatix99@gmail.com" target="_blank">chromatix99@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span><br></span>You may see some improvement from wholesale reducing the inbound bandwidth, to say 10Mbit. This is especially true given the high asymmetry of your connection, which might require dropped acks upstream to keep filled downstream - and dropped acks will tend to increase burstiness of sending on unpaced senders.<br>
<br>
You should also try to ensure ECN is fully enabled on your LAN hosts, especially the ones running Steam. This will help to reduce retransmissions and loss-recovery cycles.<br>
<span class="gmail-m_-3396050634983068814m_7407560059569382465HOEnZb"><font color="#888888"><br>
- Jonathan Morton<br>
<br>
</font></span></blockquote></div><br></div></span><div class="gmail_extra">Well, the only improvement I've seen when limiting the bandwidth with Steam has been at lower than 1Mbps, don't think I want to go that far. In all honesty I wouldn't limit it to 10Mbit either, with the overhead it means half of my total bandwidth, not a trade-off I'm willing to do.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Still, the issue is real and it seems Steam is the only application I can reproduce it. I've seen reports about Battle.net and Windows Updates doing the same thing (because they should open multiple concurrent connections), but I can't reproduce it, at least not in the way Steam does.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Anyway I'm gonna take a "pause" from all of this, I've wasted the last three weeks ago just for trying resolving it but unfortunately still nothing. Thanks all for your help, if there's any news I'll report it here.</div></div>
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