From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nm26-vm7.access.bullet.mail.bf1.yahoo.com (nm26-vm7.access.bullet.mail.bf1.yahoo.com [216.109.115.214]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id A058521F11C for ; Sat, 14 Mar 2015 19:05:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rogers.com; s=s2048; t=1426385154; bh=ebAtZnwXztOj7bjc899lMYIZYAq5YHZ34qHWPgQon8o=; h=Date:From:Reply-To:To:Subject:References:In-Reply-To:From:Subject; b=HFO3FbCk5P1pBghFYYW8Moikj/1Bve8aBcO/Q6rLLebb0mHg+RBD9kVoFf/nJ5FIA984mGQzlw7vh3q9SoQUBx26eXL3WFSZhA0f4gA+rNxBww60iINA4ve+NvRlm0tof8CiGS+gi3OvqsU4a1izeyfYfH+phfsIi745N5Gl/OEyGjVXvwul5MzmTHdyriSKMdmKHwjbplKOG7V02VCH0zgJ1Aaynl7Z460EZ4iwLIeMWCDfpL2Y9W79tAFVxB4DUWGuR0LqNPI3JIeCrLMZcepeOnBCE3rMtFBzzMxHjAjrUreik0cFSu/4CYEb0haUJI+bRUpo7CCtvR647dh0zQ== Received: from [66.196.81.164] by nm26.access.bullet.mail.bf1.yahoo.com with NNFMP; 15 Mar 2015 02:05:54 -0000 Received: from [98.138.104.100] by tm10.access.bullet.mail.bf1.yahoo.com with NNFMP; 15 Mar 2015 02:05:54 -0000 Received: from [127.0.0.1] by smtp120.sbc.mail.ne1.yahoo.com with NNFMP; 15 Mar 2015 02:05:54 -0000 X-Yahoo-Newman-Id: 190062.85393.bm@smtp120.sbc.mail.ne1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: TbRIjU4VM1nl9nMkEJoGWzASsbpGiQbkS7MP8BNGFP6wMZc SICqlLaQQ_k2lpsBFjg4dMMCkMjwxQ6eovrh8HNCyUJjfTYumsSjgVCBcCiA 8irRmX9R48GGFCJMXy4oxOV02_wPVIPbbSAwCbtC3c3kL.wmqDQTxIM9w5o9 uSHOsnFJbgHTF.9T7uZaoWo6IboZEM13L6PFNIuXt6ET9Pg5gIVSGgPWU.gI a7AUgT6kbFQfbxFP3AJ65TYqHB.6Z.nZvzw6zP2DGc4490A7LiGmWXqCeHe0 Eo_z_kYqFJNPf1nFA_XLNUog6bPSPzO0jIC9zIUvhiy412wLvJ._NPWSeK2O 6IPvGA3_cxUzrcNqmLQ2yQEa6kMg2Vpcsaz07LavK958N4o3juG5sOV1PdAg MaymZPgjdgUUlqHBq1EVxeJdPuU5y1wDligmgPUYF9HuvDm6FVXuK6sx28uw wVhnYEFpBrgpUqn2zpRaRxwUfCfLJiyCF.y8rYmmppJxMbPUHs6BXPyEXDI6 mywJuBsVa_l5eqWtrRo8af84gG5mdPacaHzZe X-Yahoo-SMTP: sltvjZWswBCRD.ElTuB1l9j6s9wRYPpuyTNWOE5oEg-- Message-ID: <5504E8F8.3050203@rogers.com> Date: Sat, 14 Mar 2015 22:05:44 -0400 From: David Collier-Brown User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: codel@lists.bufferbloat.net References: In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Codel] Latency vs Delay X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list Reply-To: davecb@spamcop.net List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Mar 2015 02:06:25 -0000 On 03/14/2015 03:00 PM, divya singla asked > Hi Members, > is there anybody who can explain me difference between latency and delay? In queuing, latency is the time between the send and the first byte of the reply, and (total) response time is the time between the send and the last byte of the reply. The time between first and last byte is the transfer time. Both are stated as if they were being observed by a client, either nearby or remote. Delay, on the other hand, is the time the job spends sitting in a queue waiting to start work. Service time is the time it takes to do the work. Both are specifically at the server, or "queuing center" If you draw a diagram, they overlap inconveniently (;-)) --dave -- David Collier-Brown, | Always do right. This will gratify System Programmer and Author | some people and astonish the rest davecb@spamcop.net | -- Mark Twain