2:10 p.m.
Hi Dominik,
I don't have any concerns, I only wanted to know, why it will be removed, because it
can increase network performance a lot.
Thank you very much for your explanation.
I fully understand, that you want to remove features, when nobody is using them.
BR Florian
Von: "Dominik Holler" <dholler(a)redhat.com>
An: "Florian Schmid" <fschmid(a)ubimet.com>
CC: "Ales Musil" <amusil(a)redhat.com>, "users"
<users(a)ovirt.org>, "devel" <devel(a)ovirt.org>
Gesendet: Mittwoch, 4. November 2020 12:15:47
Betreff: Re: [ovirt-users] Re: Removal of dpdk
Hi Florian,
thanks for your thoughts!
On Tue, Nov 3, 2020 at 3:21 PM Florian Schmid via Users < [ mailto:users@ovirt.org |
users(a)ovirt.org ] > wrote:
Hi Ales,
what do you mean with "not maintained for a long time"?
The oVirt integration of dpdk was not maintained.
BQ_BEGIN
DPDK is heavily developed and make the linux network extremely fast.
I don't think, that SR-IOV can replace it,
BQ_END
The removal of dpdk is about removing the dpdk support from oVirt hosts only.
We wonder if there is someone using dpdk to attach oVirt VMs to physical NICs.
We are aware that many users use SR-IOV, especially for scenarios of enabling a high count
of Ethernet frames for VMs or requiring a low latency,
but we are not aware of users using dpdk to connect the oVirt VMs to the physical NICs of
the host.
BQ_BEGIN
because packets must be still processed by the kernel, which is really slow and CPU
demanding.
BQ_END
In SR-IOV the packets might be processed by the guest kernel, not but the host kernel.
oVirt is focused on the host kernel, while the guest OS is managed by the user of oVirt.
Did this explanation address your concerns?
BQ_BEGIN
BR Florian
Von: "Ales Musil" < [ mailto:amusil@redhat.com | amusil(a)redhat.com ] >
An: "Nir Soffer" < [ mailto:nsoffer@redhat.com | nsoffer(a)redhat.com ] >
CC: "users" < [ mailto:users@ovirt.org | users(a)ovirt.org ] >,
"devel" < [ mailto:devel@ovirt.org | devel(a)ovirt.org ] >
Gesendet: Dienstag, 3. November 2020 13:56:12
Betreff: [ovirt-users] Re: Removal of dpdk
On Tue, Nov 3, 2020 at 1:52 PM Nir Soffer < [ mailto:nsoffer@redhat.com |
nsoffer(a)redhat.com ] > wrote:
BQ_BEGIN
On Tue, Nov 3, 2020 at 1:07 PM Ales Musil < [ mailto:amusil@redhat.com |
amusil(a)redhat.com ] > wrote:
BQ_BEGIN
Hello,
we have decided to remove dpdk in the upcoming version of oVirt namely 4.4.4. Let us know
if there are any concerns about this.
BQ_END
Can you give more info why we want to remove this feature, and what is
the replacement for existing users?
Nir
BQ_END
Sure,
the feature was only experimental and not maintained for a long time. The replacement is
to use SR-IOV
which is supported by oVirt.
Thanks,
Ales
--
Ales Musil
Software Engineer - RHV Network
[ https://www.redhat.com/ | Red Hat EMEA ]
[ mailto:amusil@redhat.com | amusil(a)redhat.com ] IM: amusil
[ https://red.ht/sig | ]
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BQ_END