RE: phy: SMSC LAN8710/LAN8720 high load

[David Laight]

From: Teresa Remmet
> Sent: 11 January 2016 07:42
> we have noticed load issues on our AM335x boards with a LAN8710 phy while
> cpu is idling using 4.4-rc8.
> 
> CPU:   0% usr   0% sys   0% nic  99% idle   0% io   0% irq   0% sirq
> Load average: 1.21 1.16 1.00 1/84 372

The 'Load average' value is mostly meaningless.
It includes any process/thread that is sleeping uninterruptably - even
if the process is never woken (or is only woken for short periods).

If you have a kernel thread that you don't want affected by signals
(exits on some request to the driver) then you end up increasing the
'load average'.

	David