Messages in this thread | | | From | David Laight <> | Subject | RE: phy: SMSC LAN8710/LAN8720 high load | Date | Tue, 12 Jan 2016 11:33:09 +0000 |
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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
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