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From: ast@cs.vu.nl (Andy Tanenbaum)
Newsgroups: comp.os.mach
Subject: Re: Mach RPC Throughput...
Message-ID: <9337@star.cs.vu.nl>
Date: 17 Mar 91 00:27:14 GMT
References: <MORSE.91Mar14091659@quark.mpr.ca> <63274@bbn.BBN.COM> <4bsEGja00hsQI6K19M@cs.cmu.edu>
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In article <4bsEGja00hsQI6K19M@cs.cmu.edu> Richard.Draves@cs.cmu.edu writes:
>I rewrote the kernel IPC code.  I believe the Amoeba/Mach comparison was
>looking at network RPC throughput.  We are looking at ways to improve
>the performance of network RPCs for Mach 3.0.

What are the current figures for the 3.0 microkernel for sending a null
message from user space on one machine over the Ethernet to another
user process and then back, i.e. the null RPC time?  Also, what is the
maximum user-to-user bandwidth in 3.0?  If possibly, what are they 
on Sun 3/60s, to compare them with the numbers I published in the Dec, 1990
CACM.

Andy Tanenbaum (ast@cs.vu.nl)