Re: [Openstack] URGENT: packet loss on openstack instance

2018-09-15 Thread Liping Mao (limao)
Hi Satish, Did your packet loss happen always or it only happened when heavy load? AFAIK, if you do not tun anything, the vm tap can process about 50kpps before the tap device start to drop packets. If it happened in heavy load, couple of things you can try: 1) increase tap queue length,

Re: [Openstack] URGENT: packet loss on openstack instance

2018-09-15 Thread Satish Patel
[root@compute-33 ~]# ifconfig tap5af7f525-5f | grep -i drop RX errors 0 dropped 0 overruns 0 frame 0 TX errors 0 dropped 2528788837 overruns 0 carrier 0 collisions 0 Noticed tap interface dropping TX packets and even after increasing txqueue from 1000 to 1 nothing changed, stil

[Openstack] URGENT: packet loss on openstack instance

2018-09-15 Thread Satish Patel
Folks, I need some advice or suggestion to find out what is going on with my network, we have notice high packet loss on openstack instance and not sure what is going on, same time if i check on host machine and it has zero packet loss.. this is what i did for test... ping 8.8.8.8 from instance: