From: David Miller <davem@davemloft.net>
To: shemminger@vyatta.com
Cc: netdev@vger.kernel.org
Subject: Re: [RFC] NAPI as kobject proposal
Date: Wed, 03 Feb 2010 18:17:16 -0800 (PST) [thread overview]
Message-ID: <20100203.181716.29531795.davem@davemloft.net> (raw)
In-Reply-To: <20100203175846.545d7e56@nehalam>
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Wed, 3 Feb 2010 17:58:46 -0800
> The usage model I see is wanting to have:
> 1. only some cores being used for receive traffic
> on single Rx devices (NAPI)
> 2. only some cores being used for receive traffic
> on legacy devices (non-NAPI)
> 3. being able to configure a set of cpus with same
> IRQ/cache when doing Rx multi-queue. Assign MSI-X
> IRQ per core and allow both HT on core to split
> that RX traffic.
>
> All this should be manageable by some user utility like irqbalance.
>
> #1 and #2 argue for a per device map (like irq_affinity) but
> #3 is harder; not sure the right API for that.
Do you think the people setting RPS maps aren't capable of
configuring IRQ affinities? :-)
prev parent reply other threads:[~2010-02-04 2:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-29 18:18 [RFC] NAPI as kobject proposal Stephen Hemminger
2010-02-03 21:23 ` Ben Hutchings
2010-02-03 21:26 ` Al Viro
2010-02-03 21:41 ` Stephen Hemminger
2010-02-03 21:38 ` David Daney
2010-02-04 1:33 ` David Miller
2010-02-04 1:58 ` Stephen Hemminger
2010-02-04 2:17 ` David Miller [this message]
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