From: "Wojciechowicz, RobertX" <robertx.wojciechowicz@intel.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>,
"Gray, Mark D" <mark.d.gray@intel.com>
Cc: "stable@dpdk.org" <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)
Date: Tue, 14 Feb 2017 08:50:46 +0000 [thread overview]
Message-ID: <ED71EE0C15B44E41B8FA814D7EFD5CA8CAE96C@IRSMSX103.ger.corp.intel.com> (raw)
In-Reply-To: <20170214024147.GQ20916@yliu-dev.sh.intel.com>
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
next prev parent reply other threads:[~2017-02-14 8:50 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-09 12:56 Robert Wojciechowicz
2017-02-14 2:41 ` Yuanhan Liu
2017-02-14 8:50 ` Wojciechowicz, RobertX [this message]
2017-02-14 9:19 ` Gray, Mark D
2017-02-15 1:19 ` Yuanhan Liu
2017-02-15 14:57 ` Gray, Mark D
2017-02-22 15:28 ` Gray, Mark D
2017-02-23 3:51 ` Yuanhan Liu
2017-02-23 14:56 ` Gray, Mark D
2017-02-23 14:57 ` Stokes, Ian
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