Re: [PATCH 0/2]: Remote softirq invocation infrastructure.

From: Daniel Walker
Date: Sat Sep 20 2008 - 11:29:39 EST


On Fri, 2008-09-19 at 23:48 -0700, David Miller wrote:
> Jens Axboe has written some hacks for the block layer that allow
> queueing softirq work to remote cpus. In the context of the block
> layer he used this facility to trigger the softirq block I/O
> completion on the same cpu where the I/O was submitted.
>

> Jen's, as stated, has block layer uses for this. I intend to use this
> for receive side flow seperation on non-multiqueue network cards. And
> Steffen Klassert has a set of IPSEC parallelization changes that can
> very likely make use of this.

What's the benefit that you (or Jens) sees from migrating softirqs from
specific cpu's to others?

Daniel

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