[dm-devel] [PATCH 0/2] Introduce the request handling for dm-crypt

[Baolin Wang]

On 12 November 2015 at 23:02, Mark Brown <broonie at kernel.org> wrote:
> On Thu, Nov 12, 2015 at 01:57:27PM +0100, Arnd Bergmann wrote:
>> On Thursday 12 November 2015 20:51:10 Baolin Wang wrote:
>
>> > But it maybe not enough for HW engine which can handle maybe 10M/20M
>> > at one time.
>
>> Given that you have already done measurements, can you find out how much
>> you lose in overall performance with your existing patch if you artificially
>> limit the maximum size to sizes like 256kb, 1MB, 4MB, ...?
>
> It's probably also worth looking at the impact on CPU utilisation as
> well as throughput in your benchmarking since the system will often not
> be idle when it's doing a lot of I/O - I know you've done some
> measurements in that area before, including them when looking at block
> sizes might be interesting.

Make sense.



-- 
Baolin.wang
Best Regards