realtime section bugs still around

[Stan Hoeppner]

On 7/31/2012 6:01 PM, Jason Newton wrote:

> I'm still interested in finding out why streaming a few hundred MB to disk
> has so much over head in comparison to the calculations I do in userspace,

1.  md eats a lot of cycles at high data rates
2.  ATA overhead
3.  IRQ/MSI overhead
4.  Etc.

All these small bits add up to more than negligible CPU overhead at high
data rates.

-- 
Stan