On 7/8/20 2:14 PM, Eric Dumazet wrote: > > > On 7/8/20 9:38 AM, YU, Xiangning wrote: >> Lockless Token Bucket (LTB) is a qdisc implementation that controls the >> use of outbound bandwidth on a shared link. With the help of lockless >> qdisc, and by decoupling rate limiting and bandwidth sharing, LTB is >> designed to scale in the cloud data centers. >> > > Before reviewing this patch (with many outcomes at first glance), > we need experimental data, eg how this is expected to work on a > typical host with 100Gbit NIC (multi queue), 64 cores at least, > and what is the performance we can get from it (Number of skbs per second, > on a class limited to 99Gbit) > > Four lines of changelog seems terse to me. >
This is what I sent out in my first email. So far I don't see any problem with 2*25G bonding on 64 cores. Let me see if I can find a 100G, please stay tuned. """ Here’s some quick results we get with pktgen over a 10Gbps link. ./samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh –i eth0 -t $NUM We ran it four times and calculated the sum of the results. We did this for 5, 10, 20, and 30 threads with both HTB and LTB. We have seen significant performance gain. And we believe there are still rooms for further improvement. HTB: 5: 1365793 1367419 1367896 1365359 10: 1130063 1131307 1130035 1130385 20: 629792 629517 629219 629234 30: 582358 582537 582707 582716 LTB: 5: 3738416 3745033 3743431 3744847 10: 8327665 8327129 8320331 8322122 20: 6972309 6976670 6975789 6967784 30: 7742397 7742951 7738911 7742812 """ Thanks, - Xiangning
