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Re: RAIDframe level 5 write performance
Hello. Just for your information,and because I was curious, I tried
the following test on several raid5 systems around here.
dd if=/dev/zero of=test bs=64k count=100000
NetBSD-4.x with softdep enabled came in with a write speed of about
NetBSD-5.1 on FFSv2 without softdep or wapbl came in with a write speed of
The read speed on both installations was above 200mbytes/sec.
Another test I might suggest is looking at the output of iostat -D
when you're trying to do these really slow writes. If the disks show
100% busy during these writes, that suggests a problem with the controller
or the disks. If not, then there's a software problem in the OS somewhere.
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