eliot@itsgw.rpi.edu (Brian Eliot) (08/09/90)
Archive-name: aix-370-tcp/08-Aug-90 Original-posting-by: eliot@itsgw.rpi.edu (Brian Eliot) Original-subject: Revised AIX/370 TCP/IP performance benchmarks and driver Archive-site: aix.rpi.edu [128.113.26.20] Archive-directory: /pub Reposted-by: emv@math.lsa.umich.edu (Edward Vielmetti) A report first made available in April detailing the TCP/IP performance of AIX/370 using a variety of LAN interfaces has been revised to include performance data for the Bus-Tech, Inc. ELC2 Ethernet interface and AIX/370-to-RS/6000 FTP throughput. A revised AIX/370 device driver that supports the BTI ELC2 native emulation using data streaming channel protocols is also available. Both the report and the device driver may be obtained via anonymous FTP to aix.rpi.edu (128.113.26.20) in the following files: pub/bti.README instructions for configuring and installing a Bus-Tech ELC or ELC2 interface under VM and AIX/370 pub/bti0.3.tar.Z compressed tar distribution for BTI ELC/ELC2 native mode device driver Version 0.3 for AIX/370 pub/aixtcpbench.ps AIX/370 performance benchmark report in Postscript format pub/aixtcpbench.1403 AIX/370 performance benchmark report in 1403 line printer format pub/aixtcptable.1403 AIX/370 performance benchmark raw results tabular summary in 1403 line printer format The most significant result of the benchmark is that the BTI ELC2 achieves FTP throughputs exceeding one megabyte per second using the native and 8232 emulations and a channel data streaming rate of 4.5 megabytes per second. This represents an improvement of over 50% compared to the original BTI ELC. The ELC2 with data streaming at 3.0 megabytes per second performs at just under the one megabyte per second FTP throughput level. The revised Version 0.3 device driver is required to support the ELC2 with data streaming, but continues to support the original ELC. It also contains improvements to reduce CPU time consumption at high packet rates.