From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from homiemail-a34.g.dreamhost.com (sub4.mail.dreamhost.com [69.163.253.135]) (using TLSv1.1 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id F0A2A3B29E for ; Fri, 26 May 2017 13:31:15 -0400 (EDT) Received: from homiemail-a34.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a34.g.dreamhost.com (Postfix) with ESMTP id 18D6BA004F15; Fri, 26 May 2017 10:31:15 -0700 (PDT) Received: from kmnimac.local (unknown [50.136.231.153]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: nichols@pollere.net) by homiemail-a34.g.dreamhost.com (Postfix) with ESMTPSA id D90B1A004F12; Fri, 26 May 2017 10:31:14 -0700 (PDT) To: Eric Dumazet , Jim Gettys Cc: bloat References: <68972d45-9112-6202-7e6d-7dfc7349530b@pollere.com> <1495569054.6465.77.camel@edumazet-glaptop3.roam.corp.google.com> From: Kathleen Nichols Message-ID: <4583ea17-8e19-310e-078c-8519b04df146@pollere.com> Date: Fri, 26 May 2017 10:31:14 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: <1495569054.6465.77.camel@edumazet-glaptop3.roam.corp.google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [Bloat] passive network delay monitoring utility X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 May 2017 17:31:16 -0000 Eric, You are the king of Making The Right Thing Happen. Kathie On 5/23/17 12:50 PM, Eric Dumazet wrote: > I had the honor to attend Kathleen presentation at Google ;) > > I then worked on making sure TCP TS TSval would use 1ms units, > regardless of CONFIG_HZ option in the kernel, since apparently some > distros/devices use HZ=250 or even HZ=100 > > This should be in linux-4.13 when released. > > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=9a568de4818dea9a05af141046bd3e589245ab83 > > Cover letter for the patch series : > > https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/commit/?id=e26925ec03b31f5ae4c1fc544515486229334ef9 > > > On Tue, 2017-05-23 at 15:22 -0400, Jim Gettys wrote: >> Those of you who have not looked at pping should do so. >> >> >> See: http://pollere.net/pping.html for a description, and look at the >> slides linked to on that page. >> >> >> In particular, it would be sweet to run this on a home router, as you >> can monitor latency simultaneously in either direction. Then we can >> point a finger properly at the ISP or at the WiFi in the home network >> (encouraging either/both to get fixed). >> >> >> Anyone interested in undertaking such a project with me, please drop >> me a note. >> >> >> The only downside is that pping is a C++ app, which makes it big for a >> home router, so it can't be used on old small home routers due to >> footprint issues; but many current home routers would have space for >> it. >> >> >> - Jim >> >> >> >> >> >> >> >> On Sun, Apr 30, 2017 at 8:41 PM, Kathleen Nichols >> wrote: >> >> Hi, >> I've just made one of the tools I use to measure network delay >> available with a GPLv2 license. Perhaps it will be of >> intererst. >> >> https://github.com/pollere/pping >> >> Kathie >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat >> >> >> _______________________________________________ >> Bloat mailing list >> Bloat@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/bloat > >