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From: Clearasu <clearasu@gmail.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [dpdk-virtio] Performance tuning for dpdk with virtio?
Date: Fri, 17 Jul 2015 23:09:10 -0700	[thread overview]
Message-ID: <3C8D5206-6D90-4442-A99B-FFF08420C7FF@gmail.com> (raw)
In-Reply-To: <20150717142050.779a0378@urahara>

Forgot to mention, I am running dpdk within the VM and used virtio-net-pmd.



> On Jul 17, 2015, at 2:20 PM, Stephen Hemminger <stephen@networkplumber.org> wrote:
> 
> On Fri, 17 Jul 2015 11:03:15 -0700
> Clarylin L <clearasu@gmail.com> wrote:
> 
>> I am running dpdk with a virtual guest as a L2 forwarder.
>> 
>> If the virtual guest is on passthrough, dpdk can achieve around 10G
>> throughput. However if the virtual guest is on virtio, dpdk achieves just
>> 150M throughput, which is a huge degrade. Any idea what could be the cause
>> of such poor performance on virtio? and any performance tuning techniques I
>> could try? Thanks a lot!
> 
> The default Linux bridge (and OVS) switch are your bottleneck.
> It is not DPDK virtio issue in general. There are some small performance
> gains still possible with virtio enhancements (like offloading).
> 
> Did you try running OVS-DPDK on the host?

      parent reply	other threads:[~2015-07-18  6:09 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-17 18:03 Clarylin L
2015-07-17 21:20 ` Stephen Hemminger
2015-07-17 23:47   ` Clarylin L
2015-07-18  6:09   ` Clearasu [this message]

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