Latency analysis of TCP on an ATM network
WTEC'94 Proceedings of the USENIX Winter 1994 Technical Conference on USENIX Winter 1994 Technical Conference
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Networking software is a growing bottleneck in modern workstations, particularly for high throughput applications such as networked digital video. We measure various components of the UDP/IP protocol stack in a DEC- station 5000/200 running Ultrix 4.2a, and quantify the way in which checksumming and copying dominate the processing time for high throughput applications. This paper describes network software measurements and substantial performance improvements which derive from a faster checksum implementation.