Bug 272461
| Summary: | Very low throughput mellanox arm64 Azure | ||
|---|---|---|---|
| Product: | Base System | Reporter: | schakrabarti <schakrabarti> |
| Component: | kern | Assignee: | freebsd-net (Nobody) <net> |
| Status: | Closed FIXED | ||
| Severity: | Affects Some People | CC: | emaste, kevans |
| Priority: | --- | Keywords: | performance |
| Version: | CURRENT | ||
| Hardware: | arm64 | ||
| OS: | Any | ||
*** Bug 272462 has been marked as a duplicate of this bug. *** # nuttcp -r 10.0.0.6
11183.5827 MB / 10.00 sec = 9377.7762 Mbps 12 %TX 99 %RX 0 retrans 0.94 msRTT
# nuttcp -t 10.0.0.6
7382.5625 MB / 10.01 sec = 6189.0401 Mbps 88 %TX 23 %RX 1272 host-retrans 1.09 msRTT
# nuttcp -t 10.0.0.6
7165.5625 MB / 10.01 sec = 6007.3615 Mbps 95 %TX 22 %RX 932 host-retrans 1.24 msRTT
# nuttcp -t 10.0.0.6
7328.3125 MB / 10.01 sec = 6143.3396 Mbps 97 %TX 23 %RX 1128 host-retrans 0.89 msRTT
# nuttcp -r 10.0.0.6
11282.3515 MB / 10.00 sec = 9461.1586 Mbps 12 %TX 99 %RX 0 retrans 1.07 msRTT
# ifconfig
lo0: flags=1008049<UP,LOOPBACK,RUNNING,MULTICAST,LOWER_UP> metric 0 mtu 16384
options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
inet 127.0.0.1 netmask 0xff000000
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1
groups: lo
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
hn0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
options=0
ether 60:45:bd:c7:5b:6a
inet 10.0.0.4 netmask 0xffffff00 broadcast 10.0.0.255
media: Ethernet 100GBase-CR4 <full-duplex,rxpause,txpause>
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
mce0: flags=1008a43<UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
options=18a05ab<RXCSUM,TXCSUM,VLAN_MTU,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,NV,LINKSTATE,HWSTATS,TXRTLMT>
ether 60:45:bd:c7:5b:6a
media: Ethernet 100GBase-CR4 <full-duplex,rxpause,txpause>
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
# uname -a
FreeBSD lisa--523-e0-n0 14.0-CURRENT FreeBSD 14.0-CURRENT #0 main-n263986-4631191c8a5f: Fri Jul 14 09:03:58 UTC 2023 root@fbsd13-nvme-test:/data/ws/obj/data/ws/main/arm64.aarch64/sys/GENERIC-NODEBUG arm64
#
The nuttcp server was running on Ubuntu X86 on same subnet in Azure.
Some more data points: From Linux Ubuntu x86 system running nuttcp -t -T 5 -w 128 -v localhost: The speed is 32Gbps root@ubuntu2004:/home/lisatest# nuttcp -t -T 5 -w 128 -v localhost nuttcp-t: v6.1.2: socket nuttcp-t: buflen=65536, nstream=1, port=5001 tcp -> localhost nuttcp-t: time limit = 5.00 seconds nuttcp-t: connect to 127.0.0.1 with mss=32767, RTT=0.074 ms nuttcp-t: send window size = 262144, receive window size = 131072 nuttcp-t: available send window = 131072, available receive window = 65536 nuttcp-t: 19626.5625 MB in 5.00 real seconds = 4019455.69 KB/sec = 32927.3810 Mbps nuttcp-t: retrans = 0 nuttcp-t: 314025 I/O calls, msec/call = 0.02, calls/sec = 62804.00 nuttcp-t: 0.0user 4.9sys 0:05real 99% 0i+0d 926maxrss 0+24pf 109+168csw nuttcp-r: v6.1.2: socket nuttcp-r: buflen=65536, nstream=1, port=5001 tcp nuttcp-r: accept from 127.0.0.1 nuttcp-r: send window size = 2626560, receive window size = 262144 nuttcp-r: available send window = 1313280, available receive window = 131072 nuttcp-r: 19626.5625 MB in 5.00 real seconds = 4019583.51 KB/sec = 32928.4281 Mbps nuttcp-r: 318597 I/O calls, msec/call = 0.02, calls/sec = 63720.41 nuttcp-r: 0.0user 2.3sys 0:05real 49% 0i+0d 92maxrss 0+18pf 308774+48csw root@ubuntu2004:/home/lisatest# Now FreeBSD ARM64: 32Gbps # nuttcp -t -T 5 -w 128 -v localhost nuttcp-t: v8.2.2: socket nuttcp-t: buflen=65536, nstream=1, port=5101 tcp -> localhost nuttcp-t: time limit = 5.00 seconds nuttcp-t: connect to 127.0.0.1 with mss=16344, RTT=0.051 ms af=inet nuttcp-t: send window size = 147096, receive window size = 81720 nuttcp-t: 18235.1250 MB in 5.02 real seconds = 3720201.81 KB/sec = 30475.8932 Mbps nuttcp-t: host-retrans = 0 nuttcp-t: 291762 I/O calls, msec/call = 0.02, calls/sec = 58128.15 nuttcp-t: 0.0user 4.7sys 0:05real 94% 106i+202d 1200maxrss 0+2pf 18597+0csw nuttcp-r: v8.2.2: socket nuttcp-r: buflen=65536, nstream=1, port=5101 tcp nuttcp-r: accept from 127.0.0.1 with af=inet nuttcp-r: send window size = 49032, receive window size = 147096 nuttcp-r: 18235.1250 MB in 5.02 real seconds = 3717070.73 KB/sec = 30450.2434 Mbps nuttcp-r: 332594 I/O calls, msec/call = 0.02, calls/sec = 66207.40 nuttcp-r: 0.0user 4.6sys 0:05real 92% 104i+198d 1172maxrss 0+18pf 32651+0csw # If we are running iperf3 with multiple server bound to multiple ports and connecting multiple iperf3 client, then we are getting the similar throughput that of Linux. So there is no issue from mlx or hyper-v here. Similar behavior was reported earlier here https://forums.freebsd.org/threads/poor-performance-with-stable-13-and-mellanox-connectx-6-mlx5.85460/ |
In Azure ARM64 with Mellanox T27800 Family ConnectX-5 Virtual Function, we are seeing very low throughput of 2.4Gbps instead of available 24Gbps in iperf3 testing. We are using 14.0-CURRENT FreeBSD 14.0-CURRENT. [root@lisa--447-e0-n1 /home/lisatest]# iperf3 -Vsd iperf 3.13 FreeBSD lisa--447-e0-n1 14.0-CURRENT FreeBSD 14.0-CURRENT #26 main-n263986-4631191c8a5f-dirty: Thu Jul 6 15:55:36 UTC 2023 root@fbsd13-nvme-test:/data/ws/obj/data/ws/main/arm64.aarch64/sys/GENERIC arm64 ----------------------------------------------------------- Server listening on 5201 (test #1) ----------------------------------------------------------- get_parameters: { "tcp": true, "omit": 0, "time": 10, "num": 0, "blockcount": 0, "parallel": 1, "len": 131072, "pacing_timer": 1000, "client_version": "3.13" } SNDBUF is 32768, expecting 0 RCVBUF is 65536, expecting 0 Time: Wed, 12 Jul 2023 05:12:02 UTC Accepted connection from 10.0.0.4, port 30147 Cookie: sufbhz7veq7mc2zfkhgfqb3brk7qtekmh35z TCP MSS: 0 (default) Congestion algorithm is cubic [ 5] local 10.0.0.5 port 5201 connected to 10.0.0.4 port 30668 Starting Test: protocol: TCP, 1 streams, 131072 byte blocks, omitting 0 seconds, 10 second test, tos 0 tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000051 bytes_transferred 440081080 interval forces keep [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 420 MBytes 3.52 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 0.999994 bytes_transferred 428949692 interval forces keep [ 5] 1.00-2.00 sec 409 MBytes 3.43 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000187 bytes_transferred 315787268 interval forces keep [ 5] 2.00-3.00 sec 301 MBytes 2.53 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000033 bytes_transferred 313509888 interval forces keep [ 5] 3.00-4.00 sec 299 MBytes 2.51 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 0.999786 bytes_transferred 312184546 interval forces keep [ 5] 4.00-5.00 sec 298 MBytes 2.50 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000079 bytes_transferred 307495692 interval forces keep [ 5] 5.00-6.00 sec 293 MBytes 2.46 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000039 bytes_transferred 307502682 interval forces keep [ 5] 6.00-7.00 sec 293 MBytes 2.46 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 0.999980 bytes_transferred 309119866 interval forces keep [ 5] 7.00-8.00 sec 295 MBytes 2.47 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 0.999948 bytes_transferred 305474486 interval forces keep [ 5] 8.00-9.00 sec 291 MBytes 2.44 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 1.000009 bytes_transferred 305829276 interval forces keep [ 5] 9.00-10.00 sec 292 MBytes 2.45 Gbits/sec tcpi_snd_cwnd 13980 tcpi_snd_mss 1410 tcpi_rtt 10000 interval_len 0.000524 bytes_transferred 0 ignoring short interval with no data - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate [ 5] (sender statistics not available) [ 5] 0.00-10.00 sec 3.12 GBytes 2.68 Gbits/sec receiver rcv_tcp_congestion cubic get_results { "cpu_util_total": 71.699362492382051, "cpu_util_user": 0.1566976289611289, "cpu_util_system": 71.589782122913959, "sender_has_retransmits": 1, "congestion_used": "newreno", "streams": [{ "id": 1, "bytes": 3347795132, "retransmits": 109, "jitter": 0, "errors": 0, "packets": 0, "start_time": 0, "end_time": 10.000558 }] } send_results { "cpu_util_total": 35.778942258224347, "cpu_util_user": 0.15585994703341635, "cpu_util_system": 35.731875294043533, "sender_has_retransmits": 18446744073709551615, "congestion_used": "cubic", "streams": [{ "id": 1, "bytes": 3345934476, "retransmits": 18446744073709551615, "jitter": 0, "errors": 0, "packets": 0, "start_time": 0, "end_time": 10.00063 }] } iperf 3.13 Also client side is showing retransmit and then speed drops: # iperf3 -c 10.0.0.5 Connecting to host 10.0.0.5, port 5201 [ 5] local 10.0.0.4 port 30668 connected to 10.0.0.5 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 421 MBytes 3.52 Gbits/sec 0 1.61 MBytes [ 5] 1.00-2.00 sec 410 MBytes 3.44 Gbits/sec 107 579 KBytes [ 5] 2.00-3.00 sec 302 MBytes 2.53 Gbits/sec 0 879 KBytes [ 5] 3.00-4.00 sec 299 MBytes 2.51 Gbits/sec 0 886 KBytes [ 5] 4.00-5.00 sec 297 MBytes 2.50 Gbits/sec 0 910 KBytes [ 5] 5.00-6.00 sec 293 MBytes 2.46 Gbits/sec 0 961 KBytes [ 5] 6.00-7.00 sec 293 MBytes 2.46 Gbits/sec 0 982 KBytes [ 5] 7.00-8.00 sec 295 MBytes 2.47 Gbits/sec 2 884 KBytes [ 5] 8.00-9.00 sec 291 MBytes 2.45 Gbits/sec 0 929 KBytes [ 5] 9.00-10.00 sec 292 MBytes 2.45 Gbits/sec 0 973 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 3.12 GBytes 2.68 Gbits/sec 109 sender [ 5] 0.00-10.00 sec 3.12 GBytes 2.68 Gbits/sec receiver ifconfig output: root@schakrabarti-freebsd:/datadrive/sandbox_21_06/src/sys # ifconfig -a lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> hn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8051b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,TSO4,LRO,LINKSTATE> ether 60:45:bd:d4:97:44 inet 172.30.0.4 netmask 0xffffff00 broadcast 172.30.0.255 media: Ethernet 50GBase-KR4 <full-duplex,rxpause,txpause> status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> mce0: flags=8a43<UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8805bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,LRO,LINKSTATE> ether 60:45:bd:d4:97:44 media: Ethernet 50GBase-KR4 <full-duplex,rxpause,txpause> status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> Please help me to solve this issue as it will block FreeBSD on Azure ARM64.