Re: poor raid5 performance with mfi0

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

At 18:09 Uhr -0500 30.11.2011, Greg Troxel wrote:
>After changing to RAID10, write rate is 137 MB/s, read 173 MB/s.
>(to the raw /dev/rsd1d, no filesystem involved).

You're dodging the issue.  ;)

But, yes, if you can go with RAID1+0, that does side-step the
write-through/write-back cache issue nicely.

I have a full RAID5+0 with more data that would fit on the same 8 disks as
RAID1+0, so I cannot just switch...

        hauke

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