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NetBench: A Benchmarking Suite for Network Processors

NetBench: A Benchmarking Suite for Network Processors. Wendong Hu Gokhan Memik Department of Electrical Engineering University of California, Los Angeles. Overview. What is inside a router? A buyer wants the best Designer would like to build the best But what is the best? Benchmarks

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NetBench: A Benchmarking Suite for Network Processors

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  1. NetBench: A Benchmarking Suite for Network Processors Wendong Hu Gokhan Memik Department of Electrical Engineering University of California, Los Angeles

  2. Overview • What is inside a router? • A buyer wants the best • Designer would like to build the best • But what is the best? • Benchmarks • SPEC, TPC, SPLASH, …

  3. Outline • Introduction • Network Processor Survey • Programs • Results • Conclusion

  4. flexibility G-CPU ASIC performance Introduction • What is a Network Processor? • Programmable ICs based on system-on-a-chip technology that perform communications-specific functions more efficiently than general-purpose processors NP

  5. Introduction (cont.) • Why Network Processor(NP) • 1 Gbps is limit for off-the shelf processors • Emerging technologies and applications • What did we do • Survey NP • Decide on a set of applications • Who and why are people going to use NP’s • Gather statistics and compare

  6. Companies • Acorn Networks (genFlow); Alchemy (Au1000); AMCC/MMC (nP); Bay Micro; BOPS (Manta); Broadcom/SiByte (SB-1 core; SB-1250); Chameleon (CS2112); Chrysalis-ITS; Cisco (Toaster 2); Cognigine; Conexant/Maker (CX27510, MXT4400); empowerTel (MxP); Extreme Packet Devices; EZChip; Fast-Chip; Hi/fn; Hyperchip; IBM (PowerNP); IDT; Improv (Jazz); Infineon; Intel/Level One (IXP1200); Internet Machines; Lexra (NetVortex IP core); Lucent/Agere (Payload Plus); MIPS; Motorola/C-Port (C-5); Philips; PixelFusion; Pluris; PMC-Sierra/QED; Redback Networks/Siara; Silicon Access Networks (iFlow); Solidum; Stargate; StarGen; TranSwitch; T.sqware; Vertex Networks (XpressFlow); Vitesse/Sitera (Prism IQ2000); Vitesse/XaQti (Active-Flow Processor); XStream; ZettaCom (ZEN).

  7. Example Design

  8. Example Design

  9. Applications • Web applications • Load-balancing, URL-based switching, web caching • Security • firewall, VPN, access control, encryption • Routing and Switching • VoIP gateways, IP routing, Smart routing mechanisms (DRR?) • QoS issues • MPLS, QoS scheduling and/or classification

  10. Programs in NetBench • Programs from 3 different levels: • Micro-codes • Low-level tasks (CRC, memcopy, …) • IP level programs • Routing and related applications • High level programs • Encryption-decryption, load balancing, Level 7 switching

  11. Complete list • High-level: • UBS (URL-based switching) • RTS (Real-Teal Streaming) • TCS4 (load balancing) • DF (Diffie-Hellman) • MD5 (Message Digest) • Micro-level • CRC-32 • Table-lookup

  12. Complete list (cont.) • IP level • MCAST (multicasting) • DRR (Deficit Round Robin) • CEDF (Coordinated earliest deadline first) • NAT (Network address translation) • IPv6TB (IP version 6 tunneling) • IPCHAINS (firewall) • IPATM (IP over ATM support) • Route (IPv4 routing)

  13. Methodology • Implementations • Use the available software • Not too optimized for a specific architecture • Some applications from FreeBSD • SimpleScalar Simulator • Most popular simulator in Architecture community (cycle-based) • Extensive information about program execution • Intel IXP1200 Simulator • Micro-code assembler and debugger • Accurate, detailed cycle-based simulator

  14. Input Trace • From Columbia University

  15. Applications in SimpleScalar • MD5 • DRR • NAT • Route • Table Lookup • CRC_32

  16. Execution Times

  17. Cache behaviour • Miss rates are small compared to SPEC

  18. Parallelism • IPC: Instruction executed per cycle

  19. Routing Table Size

  20. Intel IXP1200

  21. Conclusion and Future Work • Need innovative architectures for fast link and emerging applications • Network processors deliver the necessary flexibility and processing power • Need a framework to compare the performances => NetBench • Some applications are not as tough as predicted • Continue porting applications and running simulations

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