From: Ben Hutchings <bhutchings@solarflare.com>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
Dimitris Michailidis <dm@chelsio.com>,
Thomas Gleixner <tglx@linutronix.de>,
David Howells <dhowells@redhat.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
Tom Herbert <therbert@google.com>
Subject: Re: [PATCH 2/3] net: Add net device irq siloing feature
Date: Fri, 15 Apr 2011 23:49:03 +0100 [thread overview]
Message-ID: <1302907743.2845.23.camel@bwh-desktop> (raw)
In-Reply-To: <1302898677-3833-3-git-send-email-nhorman@tuxdriver.com>
On Fri, 2011-04-15 at 16:17 -0400, Neil Horman wrote:
> Using the irq affinity infrastrucuture, we can now allow net devices to call
> request_irq using a new wrapper function (request_net_irq), which will attach a
> common affinty_update handler to each requested irq. This affinty update
> mechanism correlates each tracked irq to the flow(s) that said irq processes
> most frequently. The highest traffic flow is noted, marked and exported to user
> space via the affinity_hint proc file for each irq. In this way, utilities like
> irqbalance are able to determine which cpu is recieving the most data from each
> rx queue on a given NIC, and set irq affinity accordingly.
[...]
Is irqbalance expected to poll the affinity hints? How often?
Ben.
--
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
next prev parent reply other threads:[~2011-04-15 23:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-15 20:17 net: Automatic IRQ siloing for network devices Neil Horman
2011-04-15 20:17 ` [PATCH 1/3] irq: Add registered affinity guidance infrastructure Neil Horman
2011-04-16 0:22 ` Thomas Gleixner
2011-04-16 2:11 ` Neil Horman
2011-04-15 20:17 ` [PATCH 2/3] net: Add net device irq siloing feature Neil Horman
2011-04-15 22:49 ` Ben Hutchings [this message]
2011-04-16 1:49 ` Neil Horman
2011-04-16 4:52 ` Stephen Hemminger
2011-04-16 6:21 ` Eric Dumazet
2011-04-16 11:55 ` Neil Horman
2011-04-15 20:17 ` [PATCH 3/3] net: Adding siloing irqs to cxgb4 driver Neil Horman
2011-04-15 22:54 ` net: Automatic IRQ siloing for network devices Ben Hutchings
2011-04-16 0:50 ` Ben Hutchings
2011-04-16 1:59 ` Neil Horman
2011-04-16 16:17 ` Stephen Hemminger
2011-04-17 17:20 ` Neil Horman
2011-04-17 18:38 ` Ben Hutchings
2011-04-18 1:08 ` Neil Horman
2011-04-18 21:51 ` Ben Hutchings
2011-04-19 0:52 ` Neil Horman
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