On 12/19/07, Bill Davidsen <davidsen@xxxxxxx> wrote:
> As other posts have detailed, putting the partition on a 64k aligned
> boundary can address the performance problems. However, a poor choice of
> chunk size, cache_buffer size, or just random i/o in small sizes can eat
> up a lot of the benefit.
>
> I don't think you need to give up your partitions to get the benefit of
> alignment.
How might that benefit be realized?
Assume I have 3 disks, /dev/sd{b,c,d} all partitioned identically with
4 partitions, and I want to use /dev/sd{b,c,d}3 for a new SW raid.
What sequence of steps can I take to ensure that my raid is aligned on
a 64K boundary?
What effect do the different superblock formats have, if any, in this situation?
--
Jon
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