I have Ubuntu 14.04.5 with kernel version 4.4. I updated kernel version to 4.15.1 which supports kernel datapaths.
I don't want to use DPDK since I don't have DPDK compatible network cards. On Thu, Dec 27, 2018, 8:24 PM Ben Pfaff <[email protected] wrote: > On Thu, Dec 27, 2018 at 12:02:50PM +0500, Ramzah Rehman wrote: > > It is mentioned in FAQ of QoS that "Open vSwitch 2.10 has implemented > > meters in the Linux kernel datapath " which means we can use meters in > > kernel datapath. However, when I try to add meter, I get > > OFPMMFC_INVALID_METER error. This is what I did. > > > > #ovs-vsctl add-br br0 > > #ovs-vsctl set bridge br0 > > > protocols=OpenFlow10,OpenFlow11,OpenFlow12,OpenFlow13,OpenFlow14,OpenFlow15 > > #ovs-ofctl -O OpenFlow15 add-meter br0 > > meter=100,kbps,band=type=drop,rate=300000 > > OFPT_ERROR (OF1.3) (xid=0x2): OFPMMFC_INVALID_METER > > OFPT_METER_MOD (OF1.3) (xid=0x2): ADD meter=100 kbps bands= > > type=drop rate=300000 > > > > Please let me what I am doing wrong. > > Probably the kernel module you're using doesn't support meters. > > > One important thing to mention here is that when I set the type of > > switch to netdev like this: > > > > #ovs-vsctl set bridge br0 datapath_type=netdev > > > > I can add meters without any error. What's the reason? > > Each datapath has its own meter implementation, so when you switch > datapaths you get different behavior. > > > There's one problem with this as well, I cannot achieve throughput > > more than 500Mbps on 1Gbps link once I set the datapath type to > > netdev. > > Probably you should use DPDK if you want high performance from the > userspace datapath. >
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