[ofa-general] SRP/mlx4 interrupts throttling performance

[Cameron Harr]

Vladislav Bolkhovitin wrote:
>
> I guess, you use a regular caching IO? The lowest packet size it can 
> produce is a PAGE_SIZE (4K). Target can't change it. You can have 
> lower packets only with O_DIRECT or sg interface. But I'm not sure it 
> will be performance effective.
I do everything with Direct IO, which is automatic when using the 
BLOCKIO method in SCST.
>
> I'd recommend you to use 4K packets and deadline IO scheduler. 
I've tried this before, but can probably set it as my default config.

-Cameron