From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-x22b.google.com (mail-ig0-x22b.google.com [IPv6:2607:f8b0:4001:c05::22b]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 7085A21F1E5 for ; Fri, 8 May 2015 07:22:45 -0700 (PDT) Received: by iget9 with SMTP id t9so31849419ige.1 for ; Fri, 08 May 2015 07:22:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=hifao9SffAgaRP64WOZDl+yUhdNcxoNgswImDo4ptBU=; b=TsENLC+JvveNGgXTjgXIUdCUwzDoQueV2qHHB6Wkj6rL0CuUMJUVk+Pufnnkm5PSkc ggWprUqdFFcvz/5mD0quiJtqc0Wr92Gqx5N8QkDs30enRaPIAoesuAOPf4JJD8IcPUu7 uR2eim33ZGOx9v8Rl++ZmgeeWDEDHtErv9rKUndqTyjH+4h28RaTQ55KgM/XQJ42Il0c OdbpY8mRhqe5qIzX14BO0iHPeH6foU921I777TFhkyd1EcKctsB8S+sGoVcyw9fQLsn8 0zBj59tvbpMktGLsBESWdY+amcegJEeaw/rHIgPUUHYHbGDr5JWKc3dhE2eJ4mWGb5Ou NPnw== MIME-Version: 1.0 X-Received: by 10.50.66.230 with SMTP id i6mr4764553igt.22.1431094959340; Fri, 08 May 2015 07:22:39 -0700 (PDT) Sender: justinbeech@gmail.com Received: by 10.50.107.42 with HTTP; Fri, 8 May 2015 07:22:39 -0700 (PDT) In-Reply-To: <11451A60-6B68-4987-939C-E2F4F18D19B1@gmail.com> References: <6C0D04CF-53AA-4D18-A4E4-B746AF6487C7@gmx.de> <87wq123p5r.fsf@toke.dk> <2288B614-B415-4017-A842-76E8F5DFDE4C@gmx.de> <553B06CE.1050209@superduper.net> <14ceed3c818.27f7.e972a4f4d859b00521b2b659602cb2f9@superduper.net> <0C930D43-A05B-48E2-BC01-792CAA72CAD1@gmx.de> <5549A1B8.50005@superduper.net> <9CF0E173-2CE5-4950-84D1-44EAEF174882@gmx.de> <11451A60-6B68-4987-939C-E2F4F18D19B1@gmail.com> Date: Sat, 9 May 2015 00:22:39 +1000 X-Google-Sender-Auth: T7afK45WTZSZm2875WNurqIP_LQ Message-ID: From: jb To: Rich Brown Content-Type: multipart/alternative; boundary=047d7bd6be22b10970051592c264 Cc: bloat Subject: Re: [Bloat] DSLReports Jitter/PDV test X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 May 2015 14:23:19 -0000 --047d7bd6be22b10970051592c264 Content-Type: text/plain; charset=UTF-8 I was surprised as well, I wasn't that impressed with web sockets for a while then realised it was the server side holding them back. They are also interesting because you can play with asymmetry. For example: ping with 1 byte up but 1k down? or vice versa. Can. You can't do that with icmp. they also don't seem to be too demanding on cpu. On Fri, May 8, 2015 at 11:20 PM, Rich Brown wrote: > > On May 7, 2015, at 6:44 AM, jb wrote: > > There is a web socket based jitter tester now. It is very early stage but > works ok. > > http://www.dslreports.com/speedtest?radar=1 > > > I was surprised to see how *good* a test the websocket could be. It > appears to add only a couple msec over the ICMP Echo timings. > > Here are a few samples from the web page. The first four columns show the > values from the PDV test; the final column is the min/avg/max/stddev from > ping. > > NY, USA 162.248.95.144 41 +3ms 38.677/40.405/43.192/1.269 ms > > CO, USA 72.5.102.138 80 +3ms 79.305/81.531/85.514/1.540 ms > > LA, USA 162.248.93.162 108 +5ms 105.225/106.540/108.358/0.877 ms > > Nice work, Justin! > > Rich > --047d7bd6be22b10970051592c264 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I was surprised as well, I wasn't that impressed with = web sockets for a while
then realised it was the server side holding th= em back.

They are also interesting because you can= play with asymmetry. For example:
ping with 1 byte up but 1k dow= n? or vice versa. Can. You can't do that with icmp.

they also don't seem to be too demanding on cpu.

On Fri, May 8, 2015 at= 11:20 PM, Rich Brown <richb.hanover@gmail.com> wrote:=

=
On May 7, 2015, at 6:44 AM, jb <justin@dslr.net> wrote:

There is a= web socket based jitter tester now. It is very early stage but works ok.


I was surprised to see = how *good* a test the websocket could be. It appears to add only a couple m= sec over the ICMP Echo timings.

Here are a few sam= ples from the web page. The first four columns show the values from the PDV= test; the final column is the min/avg/max/stddev from ping.

=
NY, USA 162.248= .95.144 41 +3ms 38= .677/40.405/43.192/1.269 ms

CO, USA 72.5.102.138 80 +3ms 79.305/81.531/85.514/1.540 ms
<= br>
LA, USA 162.248.9= 3.162 108 +5ms 105= .225/106.540/108.358/0.877 ms

Nice work, Justin!

Rich=

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