From: Sridhar Samudrala <samudrala.sridhar@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>,
David Miller <davem@davemloft.net>,
netdev@vger.kernel.org,
Hannes Frederic Sowa <hannes@stressinduktion.org>
Subject: Re: [PATCH v2 net-next] inet: fix a UFO regression
Date: Fri, 08 Nov 2013 12:20:30 -0800 [thread overview]
Message-ID: <527D478E.4020607@gmail.com> (raw)
In-Reply-To: <1383913124.9412.223.camel@edumazet-glaptop2.roam.corp.google.com>
On 11/8/2013 4:18 AM, Eric Dumazet wrote:
> On Thu, 2013-11-07 at 22:41 -0800, Sridhar Samudrala wrote:
>
>> Does this fix also help vxlan performance between 2 VMs on 2 different
>> physical m/cs across 10G NIC?
>> What is the throughput you are seeing via 10G nics?
>> With linux 3.12, i am only seeing around 2Gbps (iperf TCP_STREAM with
>> 16K messages) between 2 VMs when using vxlan across a 10G nic.
>> Is this due to the overhead of software GSO and not doing GRO at the
>> receiver?
> What NIC is used at sender, what NIC is used at receiver ?
I am seeing almost similar results with both Emulex and Intel 10Gb NICs
at both sender and receiver.
>
> If you use GRE instead of VXLAN, do you get any difference in speed ?
With GRE, i am seeing slightly better results. 3.2Gb/s compared to
1.8Gb/s with vxlan.
Thanks
Sridhar
next prev parent reply other threads:[~2013-11-08 20:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-08 5:44 [PATCH v2 net-next] inet: fix a UFO regression Alexei Starovoitov
2013-11-08 5:50 ` Eric Dumazet
2013-11-08 6:41 ` Sridhar Samudrala
2013-11-08 12:18 ` Eric Dumazet
2013-11-08 20:20 ` Sridhar Samudrala [this message]
2013-11-08 20:57 ` Eric Dumazet
-- strict thread matches above, loose matches on Subject: below --
2013-10-25 1:59 vxlan gso is broken by stackable gso_segment() Alexei Starovoitov
2013-10-25 4:06 ` Eric Dumazet
2013-10-25 9:09 ` Eric Dumazet
2013-10-25 22:18 ` David Miller
2013-10-25 22:41 ` Alexei Starovoitov
2013-10-28 1:18 ` [PATCH net-next] inet: restore gso for vxlan Eric Dumazet
2013-11-07 22:33 ` Eric Dumazet
2013-11-07 23:27 ` Alexei Starovoitov
2013-11-08 0:44 ` [PATCH net-next] inet: fix a UFO regression Eric Dumazet
2013-11-08 2:32 ` [PATCH v2 " Eric Dumazet
2013-11-08 7:08 ` David Miller
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