From: gmate.amit@gmail.com (Kumar amit mehta)
To: kernelnewbies@lists.kernelnewbies.org
Subject: relationship between cpu_affinity and Packet RX Processing
Date: Tue, 26 Mar 2013 11:54:56 -0700 [thread overview]
Message-ID: <20130326185456.GA6868@gmail.com> (raw)
In-Reply-To: <20130326184555.GA23561@worldash.org>
On Tue, Mar 26, 2013 at 11:45:55AM -0700, Arlie Stephens wrote:
> I don't know for sure what linux does, but the NICs I've seen with
> multiple queues tend to select queues by hashing incoming packets
> based on source IP, sourse port, destination IP, destination port and
> (if TCP) protocol.
>
> This is done because you generally want all packets for a given
> connection in the same queue.
>
> For a single ping, always to the same destination, all packets will
> hash the same, and so wind up in the same queue.
>
I think what you are referring to is called RSS(Recieve side scalling), which
I think is a different feature. IIRC, windows ndis driver implements this
feature.
prev parent reply other threads:[~2013-03-26 18:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-26 18:31 relationship between cpu_affinity and Packet RX Processing Kumar amit mehta
2013-03-26 18:35 ` Rami Rosen
2013-03-26 19:05 ` Kumar amit mehta
2013-03-26 19:31 ` Rami Rosen
2013-03-29 13:19 ` Kumar amit mehta
2013-03-29 13:36 ` Kumar amit mehta
2013-03-30 8:16 ` Rami Rosen
2013-03-30 21:56 ` Paulo Petruzalek
2013-03-26 18:45 ` Arlie Stephens
2013-03-26 18:54 ` Kumar amit mehta [this message]
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