From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from resqmta-c1p-024060.sys.comcast.net (resqmta-c1p-024060.sys.comcast.net [IPv6:2001:558:fd00:56::3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id C10703B2A4 for ; Tue, 22 Nov 2022 06:19:29 -0500 (EST) Received: from resomta-c1p-023269.sys.comcast.net ([96.102.18.227]) by resqmta-c1p-024060.sys.comcast.net with ESMTP id xRDIoVGNINQd0xRJIoudDu; Tue, 22 Nov 2022 11:19:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcastmailservice.net; s=20211018a; t=1669115968; bh=MQsrjrc/Qb8izV/oG1ki2CiqTZYTIYc/6vELJ1h7ck8=; h=Received:Received:Received:Date:From:To:Subject:Message-ID: MIME-Version:Content-Type:Xfinity-Spam-Result; b=H3O3m58i5SAQqMBqLQmZSjUOM0w15AMhVec2XoqyrdKwiNV97kueBqIuEDA7qSMm+ N5MeJ2M7zT6QEH2OFk1DhvBNfN1cfbbiMjRWd3CLLvpYJAHpCw2MMlfmwJV8CiUIwn y8dlAS1zSJ4Wfcxb6nGrkTW6UH01FXqFAMe7oPg/ZotsIeytZzxUJ9MQ/y5dK2LOpO HtN1a9ZxCcpqnxI7jbFFJEl1dOCkFtTwImhjvOSHw6Rn00irjEfo+vhjhvMIWOJnBy lyRELIh1wVW97yQHdF+b6mFw93gucJceMWOAh/X74Vxzk0uYsPNyu6gO3Yz6un5Ewb arVXTiPwPLX2Q== Received: from home.sewingwitch.com ([98.35.153.117]) by resomta-c1p-023269.sys.comcast.net with ESMTPA id xRIvo804qO0xoxRIwoCnRW; Tue, 22 Nov 2022 11:19:07 +0000 X-Xfinity-VAAS: gggruggvucftvghtrhhoucdtuddrgedvgedrheekgddvgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucevohhmtggrshhtqdftvghsihdpqfgfvfdppffquffrtefokffrnecuuegrihhlohhuthemuceftddunecunecujfgurhepfffhvffukffogggtgfgusehtjeeitdfntddvnecuhfhrohhmpefmvghnnhgvthhhucfrohhrthgvrhcuoehshhhivhgrsehsvgifihhnghifihhttghhrdgtohhmqeenucggtffrrghtthgvrhhnpefhueeiueffvedvhfeghfehveeffedvhfetfeevvdffgfehkeeivdfhgeejieduveenucffohhmrghinhepfhgsrdgtohhmnecukfhppeelkedrfeehrdduheefrdduudejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehhvghlohephhhomhgvrdhsvgifihhnghifihhttghhrdgtohhmpdhinhgvthepleekrdefhedrudehfedruddujedpmhgrihhlfhhrohhmpehshhhivhgrsehsvgifihhnghifihhttghhrdgtohhmpdhnsggprhgtphhtthhopedupdhrtghpthhtohepsghlohgrtheslhhishhtshdrsghufhhfvghrsghlohgrthdrnhgvth X-Xfinity-VMeta: sc=0.00;st=legit Received: from [10.96.7.39] ([10.96.7.39]) (authenticated bits=0) by home.sewingwitch.com (8.14.7/8.14.7) with ESMTP id 2AMBIvMf024580 for ; Tue, 22 Nov 2022 03:18:58 -0800 DKIM-Filter: OpenDKIM Filter v2.11.0 home.sewingwitch.com 2AMBIvMf024580 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sewingwitch.com; s=default; t=1669115938; bh=MQsrjrc/Qb8izV/oG1ki2CiqTZYTIYc/6vELJ1h7ck8=; h=Date:From:To:Subject:From; b=IDoMiH+PGzoqPv/s9oOX82cSdGeUkB2ol4QfeFSqh0q86Qk6LZsc422mu9jXIkkrR +hTrog12QMxELOqwAgl34u5MpsHvF7atRsuasPr5arCBw6z3TDHcdQJlfG5V1Pgg8A 23pKE9/o3OGHmsto58ZI1SAfSIlWC8CnwIR/l2XE= Date: Tue, 22 Nov 2022 03:18:57 -0800 From: Kenneth Porter To: Bufferbloat Mailing List Message-ID: <24245B24B6DE0F3A14466760@[192.168.69.69]> X-Mailer: Mulberry/4.1.0a3 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline; size=260 X-Scanned-By: MIMEDefang 3.2 on 10.96.0.132 Subject: [Bloat] Precision Time Protocol (PTP) 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: Tue, 22 Nov 2022 11:19:29 -0000 A nanosecond-scale replacement for NTP? This looks useful for measuring latency. Lots of technical implementation details here, down to the hardware level.