On Sat, May 14, 2005 at 05:57:51PM +0400, Vladimir Dzhivsanoff wrote: +> > This is the way RAID1 works. Try to imagine how disk's heads are moving - +> > there will be no speed-up in sequential reads, this is not RAID0. +> > +> > Mirror characteristics are: +> > - the same speed for sequential reads as for one disk; +> > - the same speed for sequential/random write as for one disk; +> > - double speed of one disk for random reads; +> by what test-suite I can test it ? +> and what balance algorithm is more proper for random reads ?
There is my tool in ports (benchmarks/raidtest/) which does what you want.
The README file wasn't moved to ports, IIRC, you can find it here:
http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/tools/raidtest/Attic/README?rev=1.2&content-type=text/x-cvsweb-markup&hideattic=0
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Pawel Jakub Dawidek http://www.wheel.pl
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FreeBSD committer Am I Evil? Yes, I Am!
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