netmap, netmap-fwd, and how many M packets-per-second?
Allan Jude
allanjude at freebsd.org
Fri Dec 2 01:57:57 UTC 2016
On 2016-12-01 18:55, Jordan Caraballo wrote:
> Feedback and/or tips and tricks more than welcome.
>
> We are trying to process huge amounts of small (64 bytes) pps through a
> router. So far results have not been as we expected. We have tested
> FreeBSD 10.3, 11.0, 11.0-STABLE, and 12.0-CURRENT with and without
> netmap. Based on netmap documentation we were expecting about 5.0M pps;
> alongside with the routing improvements from the freebsd routing
> proposal a total of 12.0M.
>
> Server Description:
>
> Dell PowerEdge R530 with 2 Intel(R) Xeon(R) E52695 CPU's, 18 cores per
> cpu. Equipped with a Chelsio T-580-CR dual port in an 8x slot.
>
> BIOS tweaks:
>
> Hyperthreading (or Logical Processors) is turned off.
>
> Current results are shown below. Additional configurations can be given
> upon request.
>
> Test Environment:
> 5 clients and 5 servers - 4 Dell C6100 and 2 Dell R420; each one
> equipped with 10G NICS (4 intel 8259X and 6 with mellanox connectx2).
>
> Script that execute the following on each host.
>
> #!/usr/local/bin/bash
> # Iterate through ports and start tests
> for ((i=1;i<=PORTS;i++)); do
> PORT=$(($PORT+1))
> iperf3 -c 172.16.2.$IP -u -b10000m -i 0 -N -l$PKT -t$TIME -P$STREAMS
> -p$PORT &
> #iperf3 -c 172.16.2.$IP -i0 -N -l$PKT -t$TIME -P$STREAMS -p$PORT &
> done
>
> # FreeBSD 10.3 - 4 streams to 80 ports from each client (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 1.9M 0 1.3M 194M 540k 0 57M 0 0
> 2.1M 0 1.5M 216M 556k 0 58M 0 0
> 1.8M 0 1.3M 192M 553k 0 58M 0 0
> 1.7M 0 1.1M 174M 542k 0 57M 0 0
> 1.9M 0 1.4M 204M 537k 0 56M 0 0
> 1.6M 0 1.1M 171M 550k 0 58M 0 0
> 1.6M 0 1.1M 173M 546k 0 57M 0 0
> 1.7M 0 1.1M 176M 564k 0 59M 0 0
> 2.0M 0 1.5M 212M 543k 0 57M 0 0
> 2.1M 0 1.5M 219M 557k 0 58M 0 0
> 1.9M 0 1.4M 205M 547k 0 57M 0 0
> 1.7M 0 1.2M 179M 553k 0 58M 0 0
>
> # FreeBSD 11.0 - 4 streams to 80 ports from each client (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 3.1M 0 1.8M 326M 1.3M 0 134M 0 0
> 2.6M 0 1.5M 269M 1.1M 0 116M 0 0
> 2.7M 0 1.5M 285M 1.2M 0 127M 0 0
> 2.4M 0 1.3M 257M 1.1M 0 119M 0 0
> 2.7M 0 1.5M 287M 1.3M 0 134M 0 0
> 2.5M 0 1.3M 262M 1.2M 0 127M 0 0
> 2.1M 0 1.1M 224M 1.0M 0 108M 0 0
> 2.7M 0 1.4M 285M 1.4M 0 143M 0 0
> 2.6M 0 1.3M 272M 1.3M 0 136M 0 0
> 2.5M 0 1.4M 265M 1.1M 0 120M 0 0
> # FreeBSD 11.0-STABLE - 4 streams to 80 ports from each client (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 1.9M 0 849k 195M 1.0M 0 107M 0 0
> 1.9M 0 854k 196M 1.0M 0 106M 0 0
> 1.9M 0 851k 196M 1.0M 0 107M 0 0
> 1.9M 0 851k 196M 1.0M 0 107M 0 0
> 1.9M 0 851k 196M 1.0M 0 107M 0 0
> 1.9M 0 852k 196M 1.0M 0 107M 0 0
> 1.9M 0 847k 195M 1.0M 0 107M 0 0
> 1.9M 0 836k 195M 1.0M 0 107M 0 0
> 1.9M 0 843k 195M 1.0M 0 107M 0 0
> # FreeBSD 12.0-CURRENT - 4 streams to 80 ports from each client (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 1.1M 259 0 115M 1.1M 0 115M 0 0
> 1.2M 273 0 124M 1.2M 0 124M 0 0
> 1.1M 200 0 112M 1.1M 0 112M 0 0
> 1.2M 290 0 122M 1.2M 0 122M 0 0
> 1.0M 132 0 107M 1.0M 0 107M 0 0
> 1.1M 303 0 118M 1.1M 0 118M 0 0
> 1.1M 278 0 112M 1.1M 0 112M 0 0
> 1.2M 243 0 122M 1.2M 0 122M 0 0
> 1.1M 168 0 112M 1.1M 0 112M 0 0
> 1.1M 161 0 112M 1.1M 0 112M 0 0
> # FreeBSD 12.0-CURRENT + Netmap - 4 streams to 80 ports from each client
> (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 1.4M 10 0 144M 1.4M 0 144M 0 0
> 1.5M 6 0 159M 1.5M 0 159M 0 0
> 1.4M 5 0 144M 1.4M 0 144M 0 0
> 1.5M 14 0 158M 1.5M 0 158M 0 0
> 1.4M 5 0 151M 1.4M 0 151M 0 0
> 1.4M 10 0 152M 1.4M 0 152M 0 0
> 1.4M 12 0 148M 1.4M 0 148M 0 0
> 1.5M 9 0 155M 1.5M 0 155M 0 0
> 1.4M 23 0 151M 1.4M 0 151M 0 0
> 1.4M 11 0 151M 1.4M 0 151M 0 0
> # FreeBSD 12.0-CURRENT + Netmap + Tuning - 4 streams to 80 ports from
> each client (5)
>
> input (Total) output
> packets errs idrops bytes packets errs bytes colls drops
> 1.4M 15 0 145M 1.4M 0 145M 0 0
> 1.5M 18 0 157M 1.5M 0 157M 0 0
> 1.5M 10 0 156M 1.5M 0 156M 0 0
> 1.5M 15 0 154M 1.5M 0 154M 0 0
> 1.4M 13 0 146M 1.4M 0 146M 0 0
> 1.5M 15 0 156M 1.5M 0 156M 0 0
> 1.5M 9 0 155M 1.5M 0 155M 0 0
> 1.5M 13 0 153M 1.5M 0 153M 0 0
> 1.4M 14 0 145M 1.4M 0 145M 0 0
> 1.4M 17 0 151M 1.4M 0 151M 0 0
>
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You might try pktgen, the netmap tool for generating packets, rather
than iperf, as your source of traffic.
Olivier Cochard-Labbé has a series of benchmarks on github in his
'netbenches' project
https://github.com/ocochard/netbenches/blob/master/Xeon_E5-2650-8Cores-Chelsio_T540-CR/fastforwarding-pf-ipfw/results/fbsd12-head.r299288.D8526/README.md
This shows FreeBSD 12 @r299288 doing ~ 2.5 M pps of forwarding (so recv
and then resend) in a stock configuration, and reaching almost 5 million
pps after a patch that has since been committed to -CURRENT.
--
Allan Jude
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