OK.
On Fri, May 25, 2018 at 03:46:31AM +0000, Lilijun (Jerry, Cloud Networking) wrote: > Hi Ben, > > Thanks for your reply very much. > > Currently, if we delete a port, ovs only flush the related datapath flows. > > So I have an opinions as follows: > When deleting the ovs bridge br-plyXXX, we can flush per br-plyXXX's port > related datapath flows instead of flush all datapath flows. > > Is that ok? > > Thanks. > > -----邮件原件----- > 发件人: Ben Pfaff [mailto:[email protected]] > 发送时间: 2018年5月25日 1:13 > 收件人: Lilijun (Jerry, Cloud Networking) <[email protected]> > 抄送: [email protected]; [email protected]; liucheng (J) > <[email protected]>; lixiao (H) <[email protected]> > 主题: Re: 答复: Question: why ovs flush all datapath flows when destroying > br/ofproto? > > It's more work to selectively flush and no one has implemented that. > > On Thu, May 24, 2018 at 02:55:00AM +0000, Lilijun (Jerry, Cloud Networking) > wrote: > > Are there anybody has some ideas about this question? > > Thanks. > > > > -----邮件原件----- > > 发件人: Lilijun (Jerry, Cloud Networking) > > 发送时间: 2018年5月18日 11:02 > > 收件人: [email protected]; 'Ben Pfaff' <[email protected]>; > > [email protected] > > 抄送: liucheng (J) <[email protected]>; lixiao (H) <[email protected]> > > 主题: Question: why ovs flush all datapath flows when destroying br/ofproto? > > > > Hi all, > > > > In my test, there are many VMs sending and receiving random flows using > > ovs. Per VM has one virtio-net NIC and connect to ovs bridge named such as > > br-plyXXX. These ovs bridges br-plyXXX are all connected to br-int using > > patch port. > > All VM's traffic can generate about 200 thousand datapath flows. I found > > that all datapath flows were flushed when deleting one VM and it's own > > br-plyXXX. > > And the implementation is in the function ofproto_destroy() calling > > ofproto_flush__(). The flush work will delete all datapath flows and > > recreate the upcall and revalidator threads. > > As a result, other VM's all traffic will miss the datapath flows and make > > upcall to match in the slow path in upcall threads. Their packet will be > > dropped or get worse latency. > > > > So, why ovs flush all datapath flows when destroying br/ofproto? Can we > > only flush the datapath flows related the destroying ofprotos? > > > > > > B.R. > > Jerry _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
