Hi Jozef,

Could you explain the performance impact?
I'm still not sure about the details of that performance impact.

Are all use case and applications affected by that performance impact? 

Regards,
Hideyuki Tai

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Luis
> Gomez
> Sent: Thursday, June 16, 2016 09:37
> To: Jozef Bacigal -X (jbacigal - PANTHEON TECHNOLOGIES at Cisco)
> <[email protected]>
> Cc: [email protected]; Manohar SL
> <[email protected]>
> Subject: Re: [openflowplugin-dev] Bug 5602 - Li Migration: Problems to detect
> the removal of flow entries
> 
> OK I did not know this feature had a performance impact. If this is a 
> significant
> impact, I agree with putting this in a config flag with default OFF.
> 
> 
> > On Jun 16, 2016, at 7:58 AM, Jozef Bacigal -X (jbacigal - PANTHEON
> TECHNOLOGIES at Cisco) <[email protected]> wrote:
> >
> > I propose, llike we discuss on the last meeting, to make an openflow config
> switch to add the possibility to switch on and off the flow removal 
> notification
> with default state OFF, that we don't have any performance issue.
> >
> > Jozef
> > ________________________________________
> > From: [email protected]
> > <[email protected]> on behalf of Luis
> > Gomez <[email protected]>
> > Sent: Wednesday, June 15, 2016 7:43 PM
> > To: Manohar SL
> > Cc: [email protected]
> > Subject: Re: [openflowplugin-dev] Bug 5602 - Li Migration: Problems to
> > detect the removal of flow entries
> >
> > +1, it is already bad OF protocol does not support Flow Added message, at
> least if it supports Flow Removed lets use it.
> >
> >> On Jun 15, 2016, at 5:06 AM, Manohar SL <[email protected]>
> wrote:
> >>
> >> Hi All,
> >>
> >> It would be good to retain the handling of " OFPT_FLOW_REMOVED" handling
> similar to the He PlugIn.
> >> This also accounts to OpenFlow Compliance.
> >>
> >> Basing the detection of the Flow Removal on Stats based solution will be
> very costly, in the context of time consumed for the detection of the flow
> removal.
> >> Completely agree with the below very valid points mentioned by Hideyuki
> Tai:
> >>>>>>>>>>>>>>>>>>
> >> This is about problems which applications face when it needs to detect the
> removal of flow entries.
> >> 1. It takes so long time (several seconds) to detect the removal.
> >> 2. It is possible that applications fail to detect the removal.
> >> <<<<<<<<<<<<<<<<
> >>
> >> Also, there should always be the flexibility to disable Stats at any given 
> >> time.
> >> If the Flow Removal detection is based on Stats functionality, then we will
> land up in losing this basic OpenFlow functionality.
> >>
> >> So, request to retain the Flow Removed handling similar to OF He PlugIn.
> >>
> >> Regs,
> >> Manohar.
> >>
> >> ---------------------------------------------------------------------
> >> -
> >>
> >> Message: 1
> >> Date: Thu, 9 Jun 2016 23:14:28 +0000
> >> From: "Tai, Hideyuki" <[email protected]>
> >> To: openflowplugin-dev <[email protected]>
> >> Cc: "[email protected]" <[email protected]>
> >> Subject: [openflowplugin-dev] Bug 5602
> >> Message-ID:
> >>
> >> <[email protected]
> gad.nec.c
> >> om>
> >>
> >> Content-Type: text/plain; charset="us-ascii"
> >>
> >> Hi OpenFlow Plugin project,
> >>
> >> VTN project would like the OpenFlow Plugin project to provide a way to 
> >> solve
> the bug 5602 in the OFP-Li (the new plugin).
> >> This is about problems which applications face when it needs to detect the
> removal of flow entries.
> >> 1. It takes so long time (several seconds) to detect the removal.
> >> 2. It is possible that applications fail to detect the removal.
> >>
> >> You can find more detailed explanation in the Bugzilla.
> >> https://bugs.opendaylight.org/show_bug.cgi?id=5602
> >>
> >> Please note that the OFP-He (the old plugin) doesn't have this issue.
> >>
> >> First, I would like you to decide by which way we solve the problems in
> Boron.
> >>
> >> I think there are several ways.
> >>
> >> One way is to support FlowRemoved notification like the OFP-He does.
> >> Actually, there are patches for that way.
> >>   https://git.opendaylight.org/gerrit/#/c/38639
> >>   https://git.opendaylight.org/gerrit/#/c/39906/
> >>   https://git.opendaylight.org/gerrit/#/c/39552/
> >>
> >> Since the patch (gerrit 38639) is merged, I thought OFP project decided to
> take this approach.
> >>
> >> Another way is to update the operational DS (flow-node-inventory:table)
> immediately after the OFP-Li receives FLOW_REMOVED from openflowjava.
> >> Then, applications can detect the removal of flow entries correctly using
> listeners for the DS.
> >>
> >> Which way do you take for Boron?
> >> Or other way?
> >>
> >> Regards,
> >> Hideyuki Tai
> >>
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 2
> >> Date: Thu, 9 Jun 2016 16:35:00 -0700
> >> From: Jamo Luhrsen <[email protected]>
> >> To: "[email protected]"
> >>      <[email protected]>,
> >>      "[email protected]"
> >>      <[email protected]>,    OpenDayLight-
> L2switch-Dev
> >>      <[email protected]>
> >> Subject: [openflowplugin-dev] CSIT troubles.
> >>
> >> openflowplugin-csit-1node-flow-services-lithium-redesign-only-boron
> >> Message-ID: <[email protected]>
> >> Content-Type: text/plain; charset=utf-8
> >>
> >> Earlier today I pointed out [0] that l2switch had something broken 
> >> happening,
> but now I think I notice it in openflowplugin CSIT [1] as well.  This job is 
> getting
> aborted as it's running for 6 hours (or timeout for these jobs) normally it's 
> a 20m
> test.
> >>
> >> something serious here.
> >>
> >> the exception in the bug [2] may give a clue.
> >>
> >>
> >> JamO
> >>
> >> [0]
> >> https://lists.opendaylight.org/pipermail/integration-dev/2016-June/00
> >> 7073.html [1]
> >> https://jenkins.opendaylight.org/releng/job/openflowplugin-csit-1node
> >> -flow-services-lithium-redesign-only-boron
> >> [2] https://bugs.opendaylight.org/show_bug.cgi?id=6042
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 3
> >> Date: Thu, 9 Jun 2016 23:37:48 +0000
> >> From: "Venkatrangan G - ERS, HCL Tech" <[email protected]>
> >> To: Jamo Luhrsen <[email protected]>,
> >>      "[email protected]"
> >>      <[email protected]>,
> >>      "[email protected]"
> >>      <[email protected]>, OpenDayLight-L2switch-
> Dev
> >>      <[email protected]>
> >> Cc: "[email protected]" <[email protected]>
> >> Subject: Re: [openflowplugin-dev] CSIT troubles.
> >>
> >> openflowplugin-csit-1node-flow-services-lithium-redesign-only-boron
> >> Message-ID:
> >>
> >>
> <[email protected]
> od.o
> >> utlook.com>
> >>
> >> Content-Type: text/plain; charset="us-ascii"
> >>
> >> Hi,
> >>
> >> We are facing this with the VTN jobs as well
> >> Reference:
> >> https://jenkins.opendaylight.org/releng/view/vtn/job/vtn-csit-1node-o
> >> penstack-mitak
> >> a-neutron-beryllium/lastSuccessfulBuild/artifact/odl1_karaf.log.tar.x
> >> z
> >>
> >>> From our understanding, the PACKET_IN handling is causing this.
> >>
> >> Regards,
> >> Venkat G
> >>
> >>
> >> -----Original Message-----
> >> From: [email protected]
> >> [mailto:[email protected]] On Behalf
> >> Of Jamo Luhrsen
> >> Sent: Thursday, June 9, 2016 4:35 PM
> >> To: [email protected];
> >> [email protected]; OpenDayLight-L2switch-Dev
> >> <[email protected]>
> >> Subject: [openflowplugin-dev] CSIT troubles.
> >> openflowplugin-csit-1node-flow-services-lithium-redesign-only-boron
> >>
> >> Earlier today I pointed out [0] that l2switch had something broken 
> >> happening,
> but now I think I notice it in openflowplugin CSIT [1] as well.  This job is 
> getting
> aborted as it's running for 6 hours (or timeout for these jobs) normally it's 
> a 20m
> test.
> >>
> >> something serious here.
> >>
> >> the exception in the bug [2] may give a clue.
> >>
> >>
> >> JamO
> >>
> >> [0]
> >> https://lists.opendaylight.org/pipermail/integration-dev/2016-June/00
> >> 7073.html [1]
> >> https://jenkins.opendaylight.org/releng/job/openflowplugin-csit-1node
> >> -flow-services-lithium-redesign-only-boron
> >> [2] https://bugs.opendaylight.org/show_bug.cgi?id=6042
> >> _______________________________________________
> >> openflowplugin-dev mailing list
> >> [email protected]
> >> https://lists.opendaylight.org/mailman/listinfo/openflowplugin-dev
> >>
> >>
> >> ::DISCLAIMER::
> >> ---------------------------------------------------------------------
> >> ---------------------------------------------------------------------
> >> ----------
> >>
> >> The contents of this e-mail and any attachment(s) are confidential and
> intended for the named recipient(s) only.
> >> E-mail transmission is not guaranteed to be secure or error-free as
> information could be intercepted, corrupted, lost, destroyed, arrive late or
> incomplete, or may contain viruses in transmission. The e mail and its 
> contents
> (with or without referred errors) shall therefore not attach any liability on 
> the
> originator or HCL or its affiliates.
> >> Views or opinions, if any, presented in this email are solely those of the
> author and may not necessarily reflect the views or opinions of HCL or its
> affiliates. Any form of reproduction, dissemination, copying, disclosure,
> modification, distribution and / or publication of this message without the 
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> If you
> have received this email in error please delete it and notify the sender
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> and other defects.
> >>
> >> ---------------------------------------------------------------------
> >> ---------------------------------------------------------------------
> >> ----------
> >>
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 4
> >> Date: Thu, 9 Jun 2016 16:54:22 -0700
> >> From: Luis Gomez <[email protected]>
> >> To: controller-dev <[email protected]>
> >> Cc: "[email protected]"
> >>      <[email protected]>,
> >>      "[email protected]"
> >>      <[email protected]>,    OpenDayLight-
> L2switch-Dev
> >>      <[email protected]>,
> >>      "[email protected]"
> >> <[email protected]>
> >> Subject: Re: [openflowplugin-dev] CSIT troubles.
> >>
> >> openflowplugin-csit-1node-flow-services-lithium-redesign-only-boron
> >> Message-ID: <[email protected]>
> >> Content-Type: text/plain; charset="us-ascii"
> >>
> >> Hi controller dev,
> >>
> >> It seems this patch (according to CI times) broke OF he plugin topology + 
> >> OF
> Li plugin topology + inventory with all the consequences in the downstream
> projects:
> >>
> >> https://git.opendaylight.org/gerrit/#/c/38962/
> >> <https://git.opendaylight.org/gerrit/#/c/38962/>
> >>
> >> I see this patch is part of a larger controller merge list, so is the 
> >> regression
> expected as part of some major change (e.g. Whether) or is this unexpected
> regression?
> >>
> >> BR/Luis
> >>
> >>
> >>> On Jun 9, 2016, at 4:37 PM, Venkatrangan G - ERS, HCL Tech
> <[email protected]> wrote:
> >>>
> >>> Hi,
> >>>
> >>> We are facing this with the VTN jobs as well
> >>> Reference:
> >>> https://jenkins.opendaylight.org/releng/view/vtn/job/vtn-csit-1node-
> >>> op
> >>> enstack-mitak
> >>> a-neutron-beryllium/lastSuccessfulBuild/artifact/odl1_karaf.log.tar.
> >>> xz
> >>>
> >>> From our understanding, the PACKET_IN handling is causing this.
> >>>
> >>> Regards,
> >>> Venkat G
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: [email protected]
> >>> [mailto:[email protected]] On Behalf
> >>> Of Jamo Luhrsen
> >>> Sent: Thursday, June 9, 2016 4:35 PM
> >>> To: [email protected];
> >>> [email protected]; OpenDayLight-L2switch-Dev
> >>> <[email protected]>
> >>> Subject: [openflowplugin-dev] CSIT troubles.
> >>> openflowplugin-csit-1node-flow-services-lithium-redesign-only-boron
> >>>
> >>> Earlier today I pointed out [0] that l2switch had something broken
> happening, but now I think I notice it in openflowplugin CSIT [1] as well.  
> This
> job is getting aborted as it's running for 6 hours (or timeout for these jobs)
> normally it's a 20m test.
> >>>
> >>> something serious here.
> >>>
> >>> the exception in the bug [2] may give a clue.
> >>>
> >>>
> >>> JamO
> >>>
> >>> [0]
> >>> https://lists.opendaylight.org/pipermail/integration-dev/2016-June/0
> >>> 07
> >>> 073.html [1]
> >>> https://jenkins.opendaylight.org/releng/job/openflowplugin-csit-1nod
> >>> e- flow-services-lithium-redesign-only-boron
> >>> [2] https://bugs.opendaylight.org/show_bug.cgi?id=6042
> >>> _______________________________________________
> >>> openflowplugin-dev mailing list
> >>> [email protected]
> >>> https://lists.opendaylight.org/mailman/listinfo/openflowplugin-dev
> >>>
> >>>
> >>> ::DISCLAIMER::
> >>> --------------------------------------------------------------------
> >>> --
> >>> --------------------------------------------------------------------
> >>> --
> >>> --------
> >>>
> >>> The contents of this e-mail and any attachment(s) are confidential and
> intended for the named recipient(s) only.
> >>> E-mail transmission is not guaranteed to be secure or error-free as
> >>> information could be intercepted, corrupted, lost, destroyed, arrive
> >>> late or incomplete, or may contain viruses in transmission. The e mail and
> its contents (with or without referred errors) shall therefore not attach any
> liability on the originator or HCL or its affiliates.
> >>> Views or opinions, if any, presented in this email are solely those
> >>> of the author and may not necessarily reflect the views or opinions
> >>> of HCL or its affiliates. Any form of reproduction, dissemination,
> >>> copying, disclosure, modification, distribution and / or publication of 
> >>> this
> message without the prior written consent of authorized representative of HCL 
> is
> strictly prohibited. If you have received this email in error please delete 
> it and
> notify the sender immediately.
> >>> Before opening any email and/or attachments, please check them for
> viruses and other defects.
> >>>
> >>> --------------------------------------------------------------------
> >>> --
> >>> --------------------------------------------------------------------
> >>> --
> >>> --------
> >>>
> >>> _______________________________________________
> >>> openflowplugin-dev mailing list
> >>> [email protected]
> >>> https://lists.opendaylight.org/mailman/listinfo/openflowplugin-dev
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