Messages in this thread | | | Date | Thu, 5 Apr 2012 10:30:33 +0800 | Subject | Despite of traffic control on host netdevice, is it worth to impose a limit control on qemu emulated net device? | From | Liu ping fan <> |
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Hi,
As we know, in order to control the guest OS's TX rate limit, we can apply rate limit on ingress Qdisc of host's tap device. But I think skb will be dropped on host's tap ingress Qdisc, which means that for those protocol lacking of congestion control such as UDP, it will cost a lot of meaningless time to produce dropped packet .
What about introducing rate limit on qemu's emulated net device? I think guest's UDP transaction will be blocked at wait_for_wmem.
Thanks and regards, pingfan
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