20230615_C-202_Kim.PDF

1、Rearchitecting the TCP Stack for I/O-Offloaded Content DeliveryTaehyun Kim,Deondre Martin Ng,Junzhi Gong*,YoungjinKwon,MinlanYu*,KyoungSooParkKAIST&*Harvard UniversityIncreasing Demand for High-quality Video Streaming2 COVID-19 pandemic(2020)“more”rapid increase in video trafficGlobal Video Traffic0

2、1002003004002017 2022Exabytes per month(Cisco whitepaper 2022)Increasing Demand for High-quality Video Streaming2 COVID-19 pandemic(2020)“more”rapid increase in video trafficCDN server performance is critical for cost-effective serviceGlobal Video Traffic01002003004002017 2022Exabytes per month(Cisc

3、o whitepaper 2022)Computing Hardware Development Trend3DISKCPUNICComputing Hardware Development Trend3DISKCPUNICRead()Send()Video to usersComputing Hardware Development Trend31GbE2005150-200 IOPS2 coresDISKCPUNICRead()Send()Video to usersComputing Hardware Development Trend31GbE2005150-200 IOPS2 cor

4、es+Rapid performance improvement with IO devices-Demise of Moores law for CPU advancement(since 2006)DISKCPUNICRead()Send()Video to usersComputing Hardware Development Trend320221GbE400GbE400 x400 x2005150-200 IOPSA few 106IOPS10104 4x x2 cores+Rapid performance improvement with IO devices-Demise of

5、 Moores law for CPU advancement(since 2006)DISKCPUNICRead()Send()Video to usersComputing Hardware Development Trend320221GbE400GbE400 x400 x2005150-200 IOPSA few 106IOPS10104 4x x2 cores64 cores32x32x+Rapid performance improvement with IO devices-Demise of Moores law for CPU advancement(since 2006)D

6、ISKCPUNICRead()Send()Read()Send()Video to usersVideo to usersCPU Consumption for HTTP Video Streaming Server4Typical server operations Read an HTTP request Read a file chunk for the request Send the responseResultBenchmark setting-nginx(v.1.80.0)on Linux-300KB files on 4x OptaneNVMe-100Gbps NIC-Sing