<html><head></head><body>Hi,<br>
<br>
Maybe <a href="https://github.com/jwbensley/Etherate/blob/master/README.md">https://github.com/jwbensley/Etherate/blob/master/README.md</a> could be of use here? Have not used it myself but it seems to at least partly match your requirements based on reading the readme...<br>
<br>
Best Regards<br>
Sebastian<br><br><div class="gmail_quote">On June 10, 2016 11:45:30 PM GMT+02:00, dpreed@reed.com wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<font face="times new roman" size="2"></font><p style="margin:0;padding:0;font-family: 'times new roman'; font-size: 10pt; word-wrap: break-word;"><font face="times new roman" size="2">Just today I found out that a datacenter my company's engineering group is expanding into is putting us on Arista 7050's. And our very preliminary tests of our systems there is showiung what seems to be a latency problem under load. I can't get in the way of the deployment process, but it's interesting/worrying that "big buffers" are there in the middle of our system, which is highly latency sensitive.<br /><br />I may also need a diagnostic test that would detect the potential occurence of bufferbloat within a 10 GigE switch, now. Our software layers are not prepared to self-diagnose at the ethernet layer very well.</font></p>
<!--WM_COMPOSE_SIGNATURE_START--><!--WM_COMPOSE_SIGNATURE_END-->
<p style="margin:0;padding:0;font-family: 'times new roman'; font-size: 10pt; word-wrap: break-word;"><br />My thought is to use an ethernet ping while our system is loaded. (our protocol is at the Ethernet layer, no IP stack). Anyone have an idea of the simplest way to do that?</p>
<p style="margin:0;padding:0;font-family: 'times new roman'; font-size: 10pt; word-wrap: break-word;"><br />On Tuesday, June 7, 2016 1:51pm, "Eric Johansson" <esj@eggo.org> said:<br /><br /></p>
<div id="SafeStyles1465594481">
<p style="margin:0;padding:0;font-family: 'times new roman'; font-size: 10pt; word-wrap: break-word;"> </p>
<br />
<div class="moz-cite-prefix">On 6/6/2016 10:58 PM, <a class="moz-txt-link-abbreviated" href="mailto:dpreed@reed.com">dpreed@reed.com</a> wrote:</div>
<blockquote>
<p style="margin:0;padding:0;margin: 0; padding: 0; font-family: 'times new roman'; font-size: 10pt; word-wrap: break-word;">Even better, it would be fun to get access to an Arista switch and some high performance TCP sources and sinks, and demonstrate extreme bufferbloat compared to a small-buffer switch. Just a demo, not a simulation full of assumptions and guesses.</p>
</blockquote>
<br /> I'm in the middle of a server room/company move. I can make a available a XSM4348S NETGEAR M4300-24X24F, and probably an arista 7050T-52 for a short time frame as part of my "testing". tell me what you need for a test setup, give me a script I can run and where I should send the results. I really need a cut and paste test because I have no time to think about anything more than the move.<br /><br /> thanks.<br /><br /></div><p style="margin-top: 2.5em; margin-bottom: 1em; border-bottom: 1px solid #000"></p><pre class="k9mail"><hr /><br />Cerowrt-devel mailing list<br />Cerowrt-devel@lists.bufferbloat.net<br /><a href="https://lists.bufferbloat.net/listinfo/cerowrt-devel">https://lists.bufferbloat.net/listinfo/cerowrt-devel</a><br /></pre></blockquote></div><br>
-- <br>
Sent from my Android device with K-9 Mail. Please excuse my brevity.</body></html>