From: Stephen Hemminger <stephen@networkplumber.org>
To: Ale Mansoor <mansooraa@hotmail.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] Poor SRIOV performance with ESXi Linux guest
Date: Wed, 2 Sep 2015 15:31:04 -0700 [thread overview]
Message-ID: <20150902153104.65a7d70d@urahara> (raw)
In-Reply-To: <BLU179-W12B69A2364E058F704AC0FAC690@phx.gbl>
On Wed, 2 Sep 2015 22:18:27 +0000
Ale Mansoor <mansooraa@hotmail.com> wrote:
> Getting less than 100 packets per second throughput between VF's under my Fedora FC20 VM running under ESXi 6.0 with DPDK l2fwd (Used as ./l2fwd -c 0xf -n 4 -- -p 0x3 -T 1)
That is many orders of magnitude less than expected.
> Questions:
> ---------------
>
> Q1) Is DPDK + SRIOV under ESXi supposed to use the igb_uio driver or the vfio-pci driver inside Linux guest os ?
You have to use igb_uio, there is no emulated IOMMU in ESX
> Q2) What is the expected l2fwd performance when running DPDK under the Linux guest OS under ESXI with SRIOV ?
Depends on many things. With SRIOV you should reach 10Mpps or more.
Did you try running Linux on baremetal on same hardware first?
> Q3) Any idea what may be preventing vfio-pci driver from binding to the VF's inside the guest instance ?
vfio-pci needs IOMMU which is not available in guest.
> Q4) Why is igb_uio performing so poorly ?
Don't blame igb_uio. It is probably something in system or vmware.
next prev parent reply other threads:[~2015-09-02 22:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-02 22:18 Ale Mansoor
2015-09-02 22:31 ` Stephen Hemminger [this message]
2015-09-03 1:02 ` Ale Mansoor
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