Per olof Ljungmark
peo at intersonic.se
Fri May 30 08:41:45 PDT 2003
> What ratio of reads to writes do you expect?
Had no expectations really, I'm new to Vinum.
>> Copying 170 files total 319MB TO the Vinum volume takes about 2m45s.
>> Copying same files FROM the Vinum volume to another volume on a
>> hardware raid5 controller takes 43s.
> A 3-1 ratio in speeds for software RAID-5 versus hardware doesn't strike
> me as being very wrong....
>> This machine is not in production yet so I can still make changes to
>> the configuration. The current block size is 16384 and the stripe size
>> 419k. I assume it would be a good idea to change that to for example
> ...or try a few stripe sizes, such as 64K or 128K.
Thanks for your comments, I felt it was a good idea just to check before
we start to use this piece seriously then I will not be able to touch it
for changing configuration. Will try different stripe sizes as per your
More information about the freebsd-questions