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Article #2548

Re: Message passing speed on BeBox

#2548
From: Bernd MEYER - Bernie
Date: Wed, 22 Nov 1995 22:41
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In article <murphyn.817001243@orca> murphyn@orca.cig.mot.com (Neal P. Murphy) writes:

>Just for comparison, on a SparcStation 10/51, sending a file of size
>4194304 as 4-byte messages across a TCP/IP socket (two processes, one
>system) took 1.5 seconds. This included dumping the output to /dev/null.
>This ain't a terribly scientific measurement, but 700,000 longs/sec is
>about what I'd expect from a real system that has 350+ processes running
>(though a low load average).

Uh --- did you synchronize those processes? That's the point in sending
the message back and forth --- otherwise you just fill up the socket,
_then_ switch context, empty it again, switch back...Which means you
get possibly hundreds of messages per context switch, which makes this
an unfair comparison.

Bernie
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Path: arc1-ca.pugleaf.net!farrer-g33-02.cc.monash.edu.au!umisef
From: umisef@halls1.cc.monash.edu.au (Bernd MEYER - Bernie)
Newsgroups: comp.sys.powerpc,comp.sys.amiga.advocacy
Subject: Re: Message passing speed on BeBox
Date: Wed, 22 Nov 1995 22:41:09 GMT
Organization: Halls of Residence, Monash University
Message-ID: <umisef.66.30B3A705@halls1.cc.monash.edu.au>
References: <jazzDI1u41.16H@netcom.com> <umisef.40.30AE344D@halls1.cc.monash.edu.au> <ACD5092596684DB87@jake-6f.ip.realtime.net> <umisef.51.30B0765F@halls1.cc.monash.edu.au> <murphyn.817001243@orca>
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