Stephen Hemminger wrote:
On Thu, 06 Sep 2007 16:30:30 +0100
James Chapman <[EMAIL PROTECTED]> wrote:
Stephen Hemminger wrote:
What about the latency that NAPI imposes? Right now there are certain
applications that
don't like NAPI because it add several more microseconds, and this may make it
worse.
>>
Latency is something that I think this approach will actually improve,
at the expense of additional polling. Or is it the ksoftirqd scheduling
latency that you are referring to?
The problem is that you leave interrupts disabled, right.
Are you saying NAPI drivers should avoid keeping interrupts disabled?
Also you are busy during idle which kills powersaving and no hz clock.
But perhaps some environments don't care about powersave because they
are always busy? Embedded routers or network servers, for example.
--
James Chapman
Katalix Systems Ltd
http://www.katalix.com
Catalysts for your Embedded Linux software development
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