On Mon, Oct 8, 2012 at 3:44 PM, Claudio Freire <klaussfreire@xxxxxxxxx> wrote:
On Mon, Oct 8, 2012 at 7:25 PM, Craig James <cjames@xxxxxxxxxxxxxx> wrote:
>> > But why? What have I overlooked?
>>
>> Do you have readahead properly set up on the new one?
>
>
> # blockdev --getra /dev/sdb1
> 256
It's probably this. 256 is way too low to saturate your I/O system.
Pump it up. I've found 8192 works nice for a system I have, 32000 I
guess could work too.
But again ... the two systems are identical. This can't explain it.
Thanks,
Craig
