Re: [CentOS-virt] Seeing dropped packets / tcp retrans on latest 4.4.1-10el6

2015-04-20 Thread George Dunlap
[cc'ing xen-users to see if anyone there has any familiarity with ebtables] On Fri, Apr 17, 2015 at 8:20 PM, Nathan March nat...@gt.net wrote: Hi All, I've tracked this down... We do rate limiting of our vms with a mix of ebtables/tc. Running these commands (replace vif1.0 with the correct

Re: [CentOS-virt] Seeing dropped packets / tcp retrans on latest 4.4.1-10el6

2015-04-17 Thread Nathan March
Hi All, I've tracked this down... We do rate limiting of our vms with a mix of ebtables/tc. Running these commands (replace vif1.0 with the correct vif for your VM) will reproduce this: ebtables -A FORWARD -i vif1.0 -j mark --set-mark 990 --mark-target CONTINUE tc qdisc add dev bond0 root

Re: [CentOS-virt] Seeing dropped packets / tcp retrans on latest 4.4.1-10el6

2015-04-15 Thread Nathan March
Hi All, Some more data on this, I've reproduced this on another host that's a completely stock centos/xen deployment with a centos 6.6 domU. Since I’m seeing the retransmissions on the VIF, I don't think it's related to the network stack but just in case.. Each host is connected via LACP with

Re: [CentOS-virt] Seeing dropped packets / tcp retrans on latest 4.4.1-10el6

2015-04-15 Thread Nathan March
] Seeing dropped packets / tcp retrans on latest 4.4.1-10el6 Hi All, Some more data on this, I've reproduced this on another host that's a completely stock centos/xen deployment with a centos 6.6 domU. Since I’m seeing the retransmissions on the VIF, I don't think it's related