[dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Robert Wojciechowicz]

Hi,

in DPDK v17.02-rc2 there is available following patch:

commit: 59317cef249c0b23098543df527b3e360ce9764f

"""
vhost: allow many vhost-user ports
Currently select() is used to monitor file descriptors for vhostuser
ports. This limits the number of ports possible to create since the
fd number is used as index in the fd_set and we have seen fds > 1023.
This patch changes select() to poll(). This way we can keep an
packed (pollfd) array for the fds, e.g. as many fds as the size of
the array.
Also see:
http://dpdk.org/ml/archives/dev/2016-April/037024.html
Reported-by: Patrik Andersson <patrik.r.andersson at ericsson.com>
Signed-off-by: Jan Wickbom <jan.wickbom at ericsson.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
"""

I tested this feature with OVS and DPDK v17.02-rc2.
I applied also this patch to DPDK v16.11 without any issues
and performed the same tests as for v17.02-rc2.
It solves the problem with connecting many VMs to one vSwitch
instance (in my tests 70 VMs) with vhost user ports.

Is it possible to backport this feature to DPDK v16.11?

It is also worth pointing out that OVS 2.7 will use 16.11 
which means we will have this bug for the next 6 months at least 
unless we can backport.

What's your opinion?

Br,
Robert

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Yuanhan Liu]

On Thu, Feb 09, 2017 at 07:56:29AM -0500, Robert Wojciechowicz wrote:
> Hi,
> 
> in DPDK v17.02-rc2 there is available following patch:
> 
> commit: 59317cef249c0b23098543df527b3e360ce9764f
> 
> """
> vhost: allow many vhost-user ports
> Currently select() is used to monitor file descriptors for vhostuser
> ports. This limits the number of ports possible to create since the
> fd number is used as index in the fd_set and we have seen fds > 1023.
> This patch changes select() to poll(). This way we can keep an
> packed (pollfd) array for the fds, e.g. as many fds as the size of
> the array.
> Also see:
> http://dpdk.org/ml/archives/dev/2016-April/037024.html
> Reported-by: Patrik Andersson <patrik.r.andersson at ericsson.com>
> Signed-off-by: Jan Wickbom <jan.wickbom at ericsson.com>
> Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> """
> 
> I tested this feature with OVS and DPDK v17.02-rc2.
> I applied also this patch to DPDK v16.11 without any issues
> and performed the same tests as for v17.02-rc2.
> It solves the problem with connecting many VMs to one vSwitch
> instance (in my tests 70 VMs) with vhost user ports.
> 
> Is it possible to backport this feature to DPDK v16.11?

As a vhost maintainer, I think this patch could be backported to v16.11:
it resolves an issue you met.

Just let me know if anyone has objections.

> It is also worth pointing out that OVS 2.7 will use 16.11 

One question though: will they use v16.11.1 or something like that?

	--yliu

> which means we will have this bug for the next 6 months at least 
> unless we can backport.
> 
> What's your opinion?
> 
> Br,
> Robert

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Wojciechowicz, RobertX]

Hi,

> > It is also worth pointing out that OVS 2.7 will use 16.11
>
> One question though: will they use v16.11.1 or something like that?

@Mark do you know what exactly version OVS is going to use?

Br,
Robert

> -----Original Message-----
> From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> Sent: Tuesday, February 14, 2017 3:42 AM
> To: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>
> Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Gray,
> Mark D <mark.d.gray@intel.com>; Devlin, Michelle
> <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>
> Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> On Thu, Feb 09, 2017 at 07:56:29AM -0500, Robert Wojciechowicz wrote:
> > Hi,
> >
> > in DPDK v17.02-rc2 there is available following patch:
> >
> > commit: 59317cef249c0b23098543df527b3e360ce9764f
> >
> > """
> > vhost: allow many vhost-user ports
> > Currently select() is used to monitor file descriptors for vhostuser
> > ports. This limits the number of ports possible to create since the
> > fd number is used as index in the fd_set and we have seen fds > 1023.
> > This patch changes select() to poll(). This way we can keep an
> > packed (pollfd) array for the fds, e.g. as many fds as the size of
> > the array.
> > Also see:
> > http://dpdk.org/ml/archives/dev/2016-April/037024.html
> > Reported-by: Patrik Andersson <patrik.r.andersson at ericsson.com>
> > Signed-off-by: Jan Wickbom <jan.wickbom at ericsson.com>
> > Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> > """
> >
> > I tested this feature with OVS and DPDK v17.02-rc2.
> > I applied also this patch to DPDK v16.11 without any issues
> > and performed the same tests as for v17.02-rc2.
> > It solves the problem with connecting many VMs to one vSwitch
> > instance (in my tests 70 VMs) with vhost user ports.
> >
> > Is it possible to backport this feature to DPDK v16.11?
> 
> As a vhost maintainer, I think this patch could be backported to v16.11:
> it resolves an issue you met.
> 
> Just let me know if anyone has objections.
> 
> > It is also worth pointing out that OVS 2.7 will use 16.11
> 
> One question though: will they use v16.11.1 or something like that?
> 
> 	--yliu
> 
> > which means we will have this bug for the next 6 months at least
> > unless we can backport.
> >
> > What's your opinion?
> >
> > Br,
> > Robert

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Gray, Mark D]

> -----Original Message-----
> From: Wojciechowicz, RobertX
> Sent: Tuesday, February 14, 2017 8:51 AM
> To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> <mark.d.gray@intel.com>
> Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>
> Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> Hi,
> 
> > > It is also worth pointing out that OVS 2.7 will use 16.11
> >
> > One question though: will they use v16.11.1 or something like that?
> 
> @Mark do you know what exactly version OVS is going to use?
> 

We could specify what version to compile against in the documentation. OVS has a stable branch for 2.7 so we could update the documentation if we needed to use a specific tag/branch. In DPDK, does each stable release get tagged?

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Yuanhan Liu]

On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> 
> 
> > -----Original Message-----
> > From: Wojciechowicz, RobertX
> > Sent: Tuesday, February 14, 2017 8:51 AM
> > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > <mark.d.gray@intel.com>
> > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> > Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > <michalx.weglicki@intel.com>; Thomas Monjalon
> > <thomas.monjalon@6wind.com>
> > Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting to
> > v16.11)
> > 
> > Hi,
> > 
> > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > >
> > > One question though: will they use v16.11.1 or something like that?
> > 
> > @Mark do you know what exactly version OVS is going to use?
> > 
> 
> We could specify what version to compile against in the documentation. OVS has a stable branch for 2.7 so we could update the documentation if we needed to use a specific tag/branch. In DPDK, does each stable release get tagged?

Yes, but the stable tree is located at

    http://dpdk.org/browse/dpdk-stable/

	--yliu

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Gray, Mark D]

> -----Original Message-----
> From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> Sent: Wednesday, February 15, 2017 1:19 AM
> To: Gray, Mark D <mark.d.gray@intel.com>
> Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>
> Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> >
> >
> > > -----Original Message-----
> > > From: Wojciechowicz, RobertX
> > > Sent: Tuesday, February 14, 2017 8:51 AM
> > > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > > <mark.d.gray@intel.com>
> > > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>;
> > > Devlin, Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > <thomas.monjalon@6wind.com>
> > > Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting
> > > to
> > > v16.11)
> > >
> > > Hi,
> > >
> > > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > > >
> > > > One question though: will they use v16.11.1 or something like that?
> > >
> > > @Mark do you know what exactly version OVS is going to use?
> > >
> >
> > We could specify what version to compile against in the documentation.
> OVS has a stable branch for 2.7 so we could update the documentation if we
> needed to use a specific tag/branch. In DPDK, does each stable release get
> tagged?
> 
> Yes, but the stable tree is located at
> 
>     http://dpdk.org/browse/dpdk-stable/
> 
> 	--yliu

I didn't realise that this was a different repository. It sounds like we should update the documentation in OVS with this information. We could just point to the stable branch which should catch the most up-to-date bugfixes.

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Gray, Mark D]

> -----Original Message-----
> From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> Sent: Wednesday, February 15, 2017 1:19 AM
> To: Gray, Mark D <mark.d.gray@intel.com>
> Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>
> Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> >
> >
> > > -----Original Message-----
> > > From: Wojciechowicz, RobertX
> > > Sent: Tuesday, February 14, 2017 8:51 AM
> > > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > > <mark.d.gray@intel.com>
> > > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>;
> > > Devlin, Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > <thomas.monjalon@6wind.com>
> > > Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting
> > > to
> > > v16.11)
> > >
> > > Hi,
> > >
> > > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > > >
> > > > One question though: will they use v16.11.1 or something like that?
> > >
> > > @Mark do you know what exactly version OVS is going to use?
> > >
> >
> > We could specify what version to compile against in the documentation.
> OVS has a stable branch for 2.7 so we could update the documentation if we
> needed to use a specific tag/branch. In DPDK, does each stable release get
> tagged?
> 
> Yes, but the stable tree is located at
> 
>     http://dpdk.org/browse/dpdk-stable/
> 
> 	--yliu

Thanks, Ian updated the ovs docs to reflect this. Thanks, this stable branch really helps us.

https://mail.openvswitch.org/pipermail/ovs-dev/2017-February/328914.html

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Yuanhan Liu]

On Wed, Feb 22, 2017 at 03:28:19PM +0000, Gray, Mark D wrote:
> 
> 
> > -----Original Message-----
> > From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> > Sent: Wednesday, February 15, 2017 1:19 AM
> > To: Gray, Mark D <mark.d.gray@intel.com>
> > Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> > stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> > Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > <michalx.weglicki@intel.com>; Thomas Monjalon
> > <thomas.monjalon@6wind.com>
> > Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting to
> > v16.11)
> > 
> > On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> > >
> > >
> > > > -----Original Message-----
> > > > From: Wojciechowicz, RobertX
> > > > Sent: Tuesday, February 14, 2017 8:51 AM
> > > > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > > > <mark.d.gray@intel.com>
> > > > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>;
> > > > Devlin, Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > > <thomas.monjalon@6wind.com>
> > > > Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting
> > > > to
> > > > v16.11)
> > > >
> > > > Hi,
> > > >
> > > > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > > > >
> > > > > One question though: will they use v16.11.1 or something like that?
> > > >
> > > > @Mark do you know what exactly version OVS is going to use?
> > > >
> > >
> > > We could specify what version to compile against in the documentation.
> > OVS has a stable branch for 2.7 so we could update the documentation if we
> > needed to use a specific tag/branch. In DPDK, does each stable release get
> > tagged?
> > 
> > Yes, but the stable tree is located at
> > 
> >     http://dpdk.org/browse/dpdk-stable/
> > 
> > 	--yliu
> 
> Thanks, Ian updated the ovs docs to reflect this. Thanks, this stable branch really helps us.
> 
> https://mail.openvswitch.org/pipermail/ovs-dev/2017-February/328914.html

JFYI, the link address changes every time we make a release, something
like:

    http://fast.dpdk.org/rel/dpdk-16.11.1.tar.xz
    http://fast.dpdk.org/rel/dpdk-16.11.2.tar.xz
    ...

And v16.11.1 is liekly to be released next week.

	--yliu

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Gray, Mark D]

> -----Original Message-----
> From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> Sent: Thursday, February 23, 2017 3:51 AM
> To: Gray, Mark D <mark.d.gray@intel.com>
> Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon
> <thomas.monjalon@6wind.com>; Stokes, Ian <ian.stokes@intel.com>
> Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> On Wed, Feb 22, 2017 at 03:28:19PM +0000, Gray, Mark D wrote:
> >
> >
> > > -----Original Message-----
> > > From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> > > Sent: Wednesday, February 15, 2017 1:19 AM
> > > To: Gray, Mark D <mark.d.gray@intel.com>
> > > Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> > > stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> > > Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > <thomas.monjalon@6wind.com>
> > > Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting
> > > to
> > > v16.11)
> > >
> > > On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> > > >
> > > >
> > > > > -----Original Message-----
> > > > > From: Wojciechowicz, RobertX
> > > > > Sent: Tuesday, February 14, 2017 8:51 AM
> > > > > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > > > > <mark.d.gray@intel.com>
> > > > > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>;
> > > > > Devlin, Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > > > <thomas.monjalon@6wind.com>
> > > > > Subject: RE: [dpdk-stable] vhost: many vhost user ports
> > > > > (backporting to
> > > > > v16.11)
> > > > >
> > > > > Hi,
> > > > >
> > > > > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > > > > >
> > > > > > One question though: will they use v16.11.1 or something like that?
> > > > >
> > > > > @Mark do you know what exactly version OVS is going to use?
> > > > >
> > > >
> > > > We could specify what version to compile against in the documentation.
> > > OVS has a stable branch for 2.7 so we could update the documentation
> > > if we needed to use a specific tag/branch. In DPDK, does each stable
> > > release get tagged?
> > >
> > > Yes, but the stable tree is located at
> > >
> > >     http://dpdk.org/browse/dpdk-stable/
> > >
> > > 	--yliu
> >
> > Thanks, Ian updated the ovs docs to reflect this. Thanks, this stable branch
> really helps us.
> >
> > https://mail.openvswitch.org/pipermail/ovs-dev/2017-February/328914.ht
> > ml
> 
> JFYI, the link address changes every time we make a release, something
> like:
> 
>     http://fast.dpdk.org/rel/dpdk-16.11.1.tar.xz
>     http://fast.dpdk.org/rel/dpdk-16.11.2.tar.xz
>     ...
> 
> And v16.11.1 is liekly to be released next week.
> 
> 	--yliu

I think this is probably OK as we would want to be up to date. The whole point
of LTS is that it is "stable" and we don't want to have to modify the OVS code/docs for
each release. However, we will see what the community thinks.

Re: [dpdk-stable] vhost: many vhost user ports (backporting to v16.11)

[Stokes, Ian]

> -----Original Message-----
> From: Gray, Mark D
> Sent: Thursday, February 23, 2017 2:57 PM
> To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
> Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> <michalx.weglicki@intel.com>; Thomas Monjalon <thomas.monjalon@6wind.com>;
> Stokes, Ian <ian.stokes@intel.com>
> Subject: RE: [dpdk-stable] vhost: many vhost user ports (backporting to
> v16.11)
> 
> 
> 
> > -----Original Message-----
> > From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> > Sent: Thursday, February 23, 2017 3:51 AM
> > To: Gray, Mark D <mark.d.gray@intel.com>
> > Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> > stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> > Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > <michalx.weglicki@intel.com>; Thomas Monjalon
> > <thomas.monjalon@6wind.com>; Stokes, Ian <ian.stokes@intel.com>
> > Subject: Re: [dpdk-stable] vhost: many vhost user ports (backporting
> > to
> > v16.11)
> >
> > On Wed, Feb 22, 2017 at 03:28:19PM +0000, Gray, Mark D wrote:
> > >
> > >
> > > > -----Original Message-----
> > > > From: Yuanhan Liu [mailto:yuanhan.liu@linux.intel.com]
> > > > Sent: Wednesday, February 15, 2017 1:19 AM
> > > > To: Gray, Mark D <mark.d.gray@intel.com>
> > > > Cc: Wojciechowicz, RobertX <robertx.wojciechowicz@intel.com>;
> > > > stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>; Devlin,
> > > > Michelle <michelle.devlin@intel.com>; Weglicki, MichalX
> > > > <michalx.weglicki@intel.com>; Thomas Monjalon
> > > > <thomas.monjalon@6wind.com>
> > > > Subject: Re: [dpdk-stable] vhost: many vhost user ports
> > > > (backporting to
> > > > v16.11)
> > > >
> > > > On Tue, Feb 14, 2017 at 09:19:33AM +0000, Gray, Mark D wrote:
> > > > >
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: Wojciechowicz, RobertX
> > > > > > Sent: Tuesday, February 14, 2017 8:51 AM
> > > > > > To: Yuanhan Liu <yuanhan.liu@linux.intel.com>; Gray, Mark D
> > > > > > <mark.d.gray@intel.com>
> > > > > > Cc: stable@dpdk.org; Mcnamara, John <john.mcnamara@intel.com>;
> > > > > > Devlin, Michelle <michelle.devlin@intel.com>; Weglicki,
> > > > > > MichalX <michalx.weglicki@intel.com>; Thomas Monjalon
> > > > > > <thomas.monjalon@6wind.com>
> > > > > > Subject: RE: [dpdk-stable] vhost: many vhost user ports
> > > > > > (backporting to
> > > > > > v16.11)
> > > > > >
> > > > > > Hi,
> > > > > >
> > > > > > > > It is also worth pointing out that OVS 2.7 will use 16.11
> > > > > > >
> > > > > > > One question though: will they use v16.11.1 or something like
> that?
> > > > > >
> > > > > > @Mark do you know what exactly version OVS is going to use?
> > > > > >
> > > > >
> > > > > We could specify what version to compile against in the
> documentation.
> > > > OVS has a stable branch for 2.7 so we could update the
> > > > documentation if we needed to use a specific tag/branch. In DPDK,
> > > > does each stable release get tagged?
> > > >
> > > > Yes, but the stable tree is located at
> > > >
> > > >     http://dpdk.org/browse/dpdk-stable/
> > > >
> > > > 	--yliu
> > >
> > > Thanks, Ian updated the ovs docs to reflect this. Thanks, this
> > > stable branch
> > really helps us.
> > >
> > > https://mail.openvswitch.org/pipermail/ovs-dev/2017-February/328914.
> > > ht
> > > ml
> >
> > JFYI, the link address changes every time we make a release, something
> > like:
> >
> >     http://fast.dpdk.org/rel/dpdk-16.11.1.tar.xz
> >     http://fast.dpdk.org/rel/dpdk-16.11.2.tar.xz
> >     ...
> >
> > And v16.11.1 is liekly to be released next week.
> >
> > 	--yliu
> 
> I think this is probably OK as we would want to be up to date. The whole
> point of LTS is that it is "stable" and we don't want to have to modify
> the OVS code/docs for each release. However, we will see what the
> community thinks.

I'll raise this at the community call this afternoon for feedback.

Ian