Subject: Re: link0 and ifconfig
To: None <martin@duskware.de>
From: Mipam <mipam@ibb.net>
List: netbsd-users
Date: 08/09/2004 11:49:37
[SNIP]
> man ifconfig, search for link[0-2]:
Thanks for your answer.
I was actually searching for something else.
When you have a machine with need to digest high loads of network
traffic, the cpu is also loaded more to process the packets.
Checksum offloading helps to save cpu cycles, but maybe a bigger
bottleneck may be the amount of interrupts that are being generated.
Normally for each packet that is received, an interrupt is triggered.
I was looking for IRQ mitigation to remedy this somewhat, so that these
interrupts are being
surpressed until the nics FIFO is full. This saves the amount of
interrupts and thus saves cpu cycles.
Some cards may support this feature, some intel cards do.
Is their support for this feature?
Or are there other ways to reduce the amount of interrupts.
FreeBSD also supports device polling to get ridd of interrupt stuff, this
works with some cards. I was wondering what i can do reduce it?
Bye,
Mipam.