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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Ben Hutchings <bhutchings@solarflare.com>
Cc: Joakim Tjernlund <joakim.tjernlund@transmode.se>, netdev@vger.kernel.org
Subject: Re: VLAN HW accel, performance advantage?
Date: Tue, 03 Sep 2013 08:29:10 -0700	[thread overview]
Message-ID: <1378222150.7360.28.camel@edumazet-glaptop> (raw)
In-Reply-To: <1378219696.1545.9.camel@bwh-desktop.uk.level5networks.com>

On Tue, 2013-09-03 at 15:48 +0100, Ben Hutchings wrote:

> GRO should be beneficial for bridges if you have bursty TCP streams.  It
> is especially beneficial if you also have TSO on the TX side.
> 
> Really you're going to have to try it and run benchmarks with your own
> hardware.

Note that ucc_geth does not have GRO support (it calls
netif_receive_skb())

It doesnt have RX checksuming either, so having to validate
tcp checksums (before aggregating them in GRO stack) would hurt if
packets only have to be forwarded.

  reply	other threads:[~2013-09-03 15:30 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-03  9:05 VLAN HW accel, performance advantage? Joakim Tjernlund
2013-09-03 13:50 ` Ben Hutchings
2013-09-03 14:08   ` Joakim Tjernlund
2013-09-03 14:48     ` Ben Hutchings
2013-09-03 15:29       ` Eric Dumazet [this message]
2013-09-03 18:01         ` Joakim Tjernlund

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