Re: [PATCH 0/2] RESEND Add support for new IBM SAS controllers

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Quoting Bart Van Assche <bvanassche@xxxxxxx>:

On 01/02/13 19:23, wenxiong@xxxxxxxxxxxxxxxxxx wrote:
I am re-sending "blk iopoll support" and "bump version" patches in previous series.

Hello Wendy,

How much do these patches improve the performance of the ipr driver ?

Thanks,

Bart.

Hi Bart,

we enable blk iopoll support in ipr driver when firmware supports multiple hrrq. With multiple hrrq support and cpu binding tuning, we can see 10%-20% performance improvement in some FIO cases.

Thanks,
Wendy

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