[ovs-dev] Upper limit of QoS burst

Ben Pfaff blp at ovn.org
Wed Apr 25 15:47:19 UTC 2018


On Mon, Apr 23, 2018 at 07:02:57AM +0000, Zang MingJie wrote:
> I found that in struct ofputil_meter_band, rate and burst are all 32 bits,
> the max burst is:
> 
> for bandwidth: 4GB = 32Gb
> for pps: 4G packets/1000 = 4M packets
> 
> In our high performance setup, 4M packets burst is easily achievable, so I
> suggest change these variable to uint64_t

It wouldn't do any good because the OpenFlow 1.3+ "wire format" uses
32-bit fields here.


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