USENIX Technical Program - Abstract - USENIX 99
Trapeze/IP: TCP/IP at Near-Gigabit Speeds
Andrew Gallatin, Jeff Chase, and Ken Yocum, Duke University
This paper presents experiences with high-speed TCP/IP
networking on a gigabit-per-second Myrinet network,
using a Myrinet messaging system called Trapeze. We
explore the effects of common optimizations above and
below the TCP/IP protocol stack, including zero-copy
sockets, large packets with scatter/gather I/O, checksum
offloading, message pipelining, and interrupt suppression.
Our experiments use extended FreeBSD 4.0 kernels
on a range of Intel and Compaq Alpha platforms.
These experiments give a snapshot of the FreeBSD
TCP/IP implementation running at bandwidths as high
as 956 Mb/s. We also report some results using Gigabit
Ethernet products from Alteon Networks, which yielded
a TCP bandwidth of 988 Mb/s using zero-copy sockets
on a 500 MHz Compaq Alpha 21264 workstation.
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