> Hello,
>
> I am new to raid and running disk benchmarks. I am not getting the
> performance from my raid I was expecting. This machine is going to
> be running apache/php/mysql in a very high load environment and I
> want to make sure things are running well before I put it into
> production.
>
> Any input would be greatly appreciated!!!
there are three things that effect the performance that you can do
something about.
1) adjust he elevator tuning in the kernel
-- see the thread from a couple of weeks ago
2) Tweak the block size matching to your average data transfer and
3) Match the ext2 file system size to the raid block size
i.e. mke2fs -R stride=(raid block size) -b ext2bksize
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