Date: Fri, 2 Jun 1995 21:49:15 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: henrich@crh.cl.msu.edu (Charles Henrich) Cc: henrich@crh.cl.msu.edu, freebsd-hackers@freebsd.org Subject: Re: A performance mystery Message-ID: <199506030449.VAA09321@gndrsh.aac.dev.com> In-Reply-To: <199506030336.UAA09183@gndrsh.aac.dev.com> from "Charles Henrich" at Jun 2, 95 11:36:09 pm
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> > > ram-speed is a cache defeat program, it will *NOT* approximate bcopy rates, > > that is why I asked you to do iozone on 1/4 memory size. I already saw > > your ram-speed results in the first posting. > > Here goes with iozone auto, no delete (Micron has 64mb ram, Compaq 24mb) We are not going to get the results I was looking for unless you are going to follow directions a *little* closer. ``repeat 10 iozone 16 8192'' > 16 8192 2687714 14221746 You said this was a Pentium right?? If it is that number is low for a triton board: (ASUS PCI/I-P54TP4, 90Mhz CPU, 64MB memory) Writing the 16 Megabyte file, 'iozone.tmp'...8.757812 seconds Reading the file...0.921875 seconds IOZONE performance measurements: 1915685 bytes/second for writing the file 18199013 bytes/second for reading the file > 16 8192 3360694 2890287 Ding... very low memory bandwidth :-(. Makes for a very slow compile :-( -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD
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