Date: Sun, 12 Feb 1995 17:10:53 -0800 (PST) From: "Justin T. Gibbs" <gibbs@estienne.CS.Berkeley.EDU> To: hasty@netcom.com Cc: FreeBSD-hackers@wcarchive.cdrom.com Subject: Re: My iozone results Message-ID: <199502130110.RAA06200@estienne.cs.berkeley.edu> In-Reply-To: <199502111943.LAA08238@netcom14.netcom.com> from "hasty@netcom.com" at Feb 11, 95 11:43:13 am
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> > > > IOZONE: auto-test mode > > > > > > MB reclen bytes/sec written bytes/sec read > > > 1 512 2064888 3728270 > > > 1 1024 3355443 4473924 > > > 16 8192 5088823 5149840 > > > Completed series of tests > > > kind of strange that you get approx. same numbers regardless of the > > file size. As if you were always (or never) going to disk! How much > > RAM do you have ? > > > Luigi > Well, I have 16MB of main and I am running X if I run the test > without X I get better numbers. > > At any rate, a more relible figure of the raw disk performance > can be obtained by tranferring like 10MB to /dev/null using > dd. Using a 16kb block size I managed to get 5.2mb/sec out > of the disk on a 10mb transfer to /dev/null. If you do the math, that's theoretical max. > Amancio Do you have any more info on your instability problems? Is it stable with just one device? I might have introduced a bug recently having to do with number of devices. I'll put all of my devices on one channel later tonight and see if I can reproduce it. -- Justin T. Gibbs ============================================== TCS Instructional Group - Programmer/Analyst 1 Cory | Po | Danube | Volga | Parker | Torus ==============================================
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