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?
prev 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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3C8D5206-6D90-4442-A99B-FFF08420C7FF@gmail.com \
--to=clearasu@gmail.com \
--cc=dev@dpdk.org \
--cc=stephen@networkplumber.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).