NDLI: High performance user space sockets on low power System on a Chip platforms

Content Provider	IEEE Xplore Digital Library
Author	Crawford, C.H. Padkowski, P. Baranski, T. Czubak, A. Raszka, L.
Copyright Year	2015
Description	Author affiliation: IBM Res. Krakow, Krakow, Poland (Padkowski, P.; Baranski, T.; Czubak, A.; Raszka, L.) \|\| IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA (Crawford, C.H.)
Abstract	With the introduction of low power System on a Chip (SoC) processor architectures in enterprise server configurations, there is a growing need to develop the software that will support scale-out, data intensive cloud applications that are deployed in data centers today. In this paper, we describe the design and implementation of a low latency user space fully compliant TCP/IP socket stack on a low power System on a Chip (SoC) architecture and demonstrate that this library can become the basis for “Big Data” applications that require both high throughput and low latency capabilities all on a power optimized system platform. For our work, we are specifically targeting cloud applications that are developed on runtimes which are seeing great growth in programmer communities and enterprise deployment as well as for which the I/O bottlenecks outweigh the compute requirements, e.g. memcached. On low-power embedded-class SoC servers, these I/O bottlenecks can be prohibitively expensive for performance and scaling requirements of such applications, even when the CPU efficiency and memory bandwidth are adequate. Our approach removes this bottleneck by leveraging available SoC integrated Network Interface Cards (NICs) as well as user space communication - thereby improving pathlength to data as well as preserving CPU cycles from context switching. Our experiments show that we can achieve sub 5 μsec ping-pong latency for 8B packets, and also provide substantive improvement to the memslap benchmark not just when compared to memcached running on the T4240 with the kernel stack (3.5 times better for 16B SETs) but also when compared to a standard x86_64 server with ConnectX 10GbE adapters when power based metrics are used (close to a factor of 2 improvement with power normalized metrics).
Starting Page	1
Ending Page	6
File Size	783262
Page Count	6
File Format	PDF
e-ISBN	9781467392860
DOI	10.1109/HPEC.2015.7322441
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fast networking User space drivers Networking offload Wire speed Servers DPAA User space sockets Linux QorIQ Computer architecture Benchmark testing Low latency Hardware IP networks Low power networking Kernel
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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