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Date: Fri, 25 Mar 2022 20:44:18 +0800
From: Mingbao Sun <sunmingbao@....com>
To: Sagi Grimberg <sagi@...mberg.me>
Cc: Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
Christoph Hellwig <hch@....de>,
Chaitanya Kulkarni <kch@...dia.com>,
linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
Eric Dumazet <edumazet@...gle.com>,
"David S . Miller" <davem@...emloft.net>,
Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
David Ahern <dsahern@...nel.org>,
Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
tyler.sun@...l.com, ping.gan@...l.com, yanxiu.cai@...l.com,
libin.zhang@...l.com, ao.sun@...l.com
Subject: Re: [PATCH v2 2/3] nvme-tcp: support specifying the
congestion-control
[Combination 2] cubic + switch ECN-marking on
This is a bad scenario.
Since the switch supports ECN-marking, but cubic can not take
advantage of that.
So we can see the bandwidth of each TX node could suddenly drop
several hundreds MB/S due to packet dropping and timeout-retransmission.
And the total bandwidth on the RX node can not reachto the full link
bandwidth (which is about 6 GB/S).
/*
* before loading traffic, clear the counters on the 2 switches.
*/
hound-dirt# clear qos statistics type queuing interface ethernet 1/1/4
hound-dirt# show queuing statistics interface ethernet 1/1/4
Interface ethernet1/1/4
Queue Packets Bytes Dropped-Packets Dropped-Bytes
0 0 0 0 0
1 0 0 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 0 0 0 0
6 0 0 0 0
7 0 0 0 0
hound-dirt#
fox-dirt# clear qos statistics type queuing interface ethernet 1/1/4
fox-dirt# show queuing statistics interface ethernet 1/1/4
Interface ethernet1/1/4
Queue Packets Bytes Dropped-Packets Dropped-Bytes
0 0 0 0 0
1 0 0 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 0 0 0 0
6 0 0 0 0
7 0 0 0 0
fox-dirt#
/*
* logs of RX node.
*/
ogden-dirt:/home/admin/tyler # echo cubic >/proc/sys/net/ipv4/tcp_congestion_control
ogden-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
cubic
ogden-dirt:/home/admin/tyler # date; ./tcp_perf.exe --server-ip 169.254.85.4 --server-port 10001 --msg-len 65536 --conn-num 24 -s -r --data-random --svr-no-wait-all-conn-OK --show-bandwidth-only
Fri Mar 25 08:23:13 EDT 2022
DBG:/mnt/hgfs/src/linux-dev-framework-master/libs/app_utils/src/socket.c(104)-socket_init_2:
bind socket fd 3 to 169.254.85.4:10001 succeed
DBG:perf_frmwk.c(1472)-create_tcp_conns_start_load:
start listen on fd 3
conn [0] local 169.254.85.4:10001 peer 169.254.85.3:59676 created.
rx thread of conn 0 started
conn [1] local 169.254.85.4:10001 peer 169.254.85.3:59678 created.
rx thread of conn 1 started
conn [2] local 169.254.85.4:10001 peer 169.254.85.3:59680 created.
rx thread of conn 2 started
conn [3] local 169.254.85.4:10001 peer 169.254.85.3:59682 created.
rx thread of conn 3 started
conn [4] local 169.254.85.4:10001 peer 169.254.85.3:59684 created.
conn [5] local 169.254.85.4:10001 peer 169.254.85.3:59686 created.
rx thread of conn 4 started
conn [6] local 169.254.85.4:10001 peer 169.254.85.3:59688 created.
rx thread of conn 5 started
rx thread of conn 6 started
conn [7] local 169.254.85.4:10001 peer 169.254.85.3:59690 created.
rx thread of conn 7 started
conn [8] local 169.254.85.4:10001 peer 169.254.85.2:37974 created.
rx thread of conn 8 started
conn [9] local 169.254.85.4:10001 peer 169.254.85.2:37978 created.
rx thread of conn 9 started
conn [10] local 169.254.85.4:10001 peer 169.254.85.2:37980 created.
rx thread of conn 10 started
conn [11] local 169.254.85.4:10001 peer 169.254.85.2:37982 created.
rx thread of conn 11 started
conn [12] local 169.254.85.4:10001 peer 169.254.85.2:37984 created.
rx thread of conn 12 started
conn [13] local 169.254.85.4:10001 peer 169.254.85.2:37986 created.
conn [14] local 169.254.85.4:10001 peer 169.254.85.2:37988 created.
rx thread of conn 13 started
conn [15] local 169.254.85.4:10001 peer 169.254.85.2:37990 created.
rx thread of conn 14 started
rx thread of conn 15 started
[time lasts]: 1
rx_msg_succ_bytes 0x1625d0000 (5,945,229,312)
conn [16] local 169.254.85.4:10001 peer 169.254.85.1:49484 created.
rx thread of conn 16 started
conn [17] local 169.254.85.4:10001 peer 169.254.85.1:49486 created.
rx thread of conn 17 started
conn [18] local 169.254.85.4:10001 peer 169.254.85.1:49490 created.
rx thread of conn 18 started
conn [19] local 169.254.85.4:10001 peer 169.254.85.1:49492 created.
rx thread of conn 19 started
conn [20] local 169.254.85.4:10001 peer 169.254.85.1:49494 created.
rx thread of conn 20 started
conn [21] local 169.254.85.4:10001 peer 169.254.85.1:49496 created.
rx thread of conn 21 started
conn [22] local 169.254.85.4:10001 peer 169.254.85.1:49498 created.
rx thread of conn 22 started
conn [23] local 169.254.85.4:10001 peer 169.254.85.1:49488 created.
24 connection(s) created in total
rx thread of conn 23 started
[time lasts]: 2
rx_msg_succ_bytes 0x153a90000 (5,698,551,808)
[time lasts]: 3
rx_msg_succ_bytes 0x1589a0000 (5,781,454,848)
[time lasts]: 4
rx_msg_succ_bytes 0x156770000 (5,745,606,656)
[time lasts]: 5
rx_msg_succ_bytes 0x155e30000 (5,735,907,328)
[time lasts]: 6
rx_msg_succ_bytes 0x1583f0000 (5,775,491,072)
[time lasts]: 7
rx_msg_succ_bytes 0x159de0000 (5,802,688,512)
[time lasts]: 8
rx_msg_succ_bytes 0x153b00000 (5,699,010,560)
[time lasts]: 9
rx_msg_succ_bytes 0x153a50000 (5,698,289,664)
[time lasts]: 10
rx_msg_succ_bytes 0x1568a0000 (5,746,851,840)
[time lasts]: 11
rx_msg_succ_bytes 0x157bb0000 (5,766,840,320)
[time lasts]: 12
rx_msg_succ_bytes 0x15a2a0000 (5,807,669,248)
[time lasts]: 13
rx_msg_succ_bytes 0x155020000 (5,721,161,728)
[time lasts]: 14
rx_msg_succ_bytes 0x154b40000 (5,716,049,920)
[time lasts]: 15
rx_msg_succ_bytes 0x157610000 (5,760,942,080)
[time lasts]: 16
rx_msg_succ_bytes 0x157cd0000 (5,768,019,968)
[time lasts]: 17
rx_msg_succ_bytes 0x153cf0000 (5,701,042,176)
[time lasts]: 18
rx_msg_succ_bytes 0x151820000 (5,662,441,472)
[time lasts]: 19
rx_msg_succ_bytes 0x153fa0000 (5,703,860,224)
[time lasts]: 20
rx_msg_succ_bytes 0x150af0000 (5,648,613,376)
[time lasts]: 21
rx_msg_succ_bytes 0x152a70000 (5,681,643,520)
[time lasts]: 22
rx_msg_succ_bytes 0x154e10000 (5,718,999,040)
[time lasts]: 23
rx_msg_succ_bytes 0x157d60000 (5,768,609,792)
[time lasts]: 24
rx_msg_succ_bytes 0x1581d0000 (5,773,262,848)
[time lasts]: 25
rx_msg_succ_bytes 0x157240000 (5,756,944,384)
[time lasts]: 26
rx_msg_succ_bytes 0x159e50000 (5,803,147,264)
[time lasts]: 27
rx_msg_succ_bytes 0x1535b0000 (5,693,440,000)
[time lasts]: 28
rx_msg_succ_bytes 0x157390000 (5,758,320,640)
[time lasts]: 29
rx_msg_succ_bytes 0x155620000 (5,727,453,184)
[time lasts]: 30
rx_msg_succ_bytes 0x153c80000 (5,700,583,424)
[time lasts]: 31
rx_msg_succ_bytes 0x154cb0000 (5,717,557,248)
[time lasts]: 32
rx_msg_succ_bytes 0x153ea0000 (5,702,811,648)
[time lasts]: 33
rx_msg_succ_bytes 0x1577f0000 (5,762,908,160)
[time lasts]: 34
rx_msg_succ_bytes 0x158090000 (5,771,952,128)
[time lasts]: 35
rx_msg_succ_bytes 0x154040000 (5,704,515,584)
[time lasts]: 36
rx_msg_succ_bytes 0x1577f0000 (5,762,908,160)
[time lasts]: 37
rx_msg_succ_bytes 0x154900000 (5,713,690,624)
[time lasts]: 38
rx_msg_succ_bytes 0x155750000 (5,728,698,368)
[time lasts]: 39
rx_msg_succ_bytes 0x154ca0000 (5,717,491,712)
[time lasts]: 40
rx_msg_succ_bytes 0x158110000 (5,772,476,416)
[time lasts]: 41
rx_msg_succ_bytes 0x155c90000 (5,734,203,392)
[time lasts]: 42
rx_msg_succ_bytes 0x1563a0000 (5,741,608,960)
[time lasts]: 43
rx_msg_succ_bytes 0x1566e0000 (5,745,016,832)
[time lasts]: 44
rx_msg_succ_bytes 0x158d20000 (5,785,124,864)
[time lasts]: 45
rx_msg_succ_bytes 0x156c70000 (5,750,849,536)
[time lasts]: 46
rx_msg_succ_bytes 0x1536c0000 (5,694,554,112)
[time lasts]: 47
rx_msg_succ_bytes 0x15b030000 (5,821,890,560)
[time lasts]: 48
rx_msg_succ_bytes 0x156ac0000 (5,749,080,064)
[time lasts]: 49
rx_msg_succ_bytes 0x151950000 (5,663,686,656)
[time lasts]: 50
rx_msg_succ_bytes 0x156f80000 (5,754,060,800)
[time lasts]: 51
rx_msg_succ_bytes 0x158250000 (5,773,787,136)
[time lasts]: 52
rx_msg_succ_bytes 0x156830000 (5,746,393,088)
[time lasts]: 53
rx_msg_succ_bytes 0x157470000 (5,759,238,144)
[time lasts]: 54
rx_msg_succ_bytes 0x1557a0000 (5,729,026,048)
[time lasts]: 55
rx_msg_succ_bytes 0x156270000 (5,740,363,776)
[time lasts]: 56
rx_msg_succ_bytes 0x158da0000 (5,785,649,152)
[time lasts]: 57
rx_msg_succ_bytes 0x158980000 (5,781,323,776)
[time lasts]: 58
rx_msg_succ_bytes 0x154fe0000 (5,720,899,584)
[time lasts]: 59
rx_msg_succ_bytes 0x155530000 (5,726,470,144)
[time lasts]: 60
rx_msg_succ_bytes 0x156da0000 (5,752,094,720)
[time lasts]: 61
rx_msg_succ_bytes 0x155f70000 (5,737,218,048)
[time lasts]: 62
rx_msg_succ_bytes 0x154500000 (5,709,496,320)
[time lasts]: 63
rx_msg_succ_bytes 0x157c50000 (5,767,495,680)
[time lasts]: 64
rx_msg_succ_bytes 0x1550b0000 (5,721,751,552)
[time lasts]: 65
rx_msg_succ_bytes 0x1586c0000 (5,778,440,192)
^Ccaught signal 2
/*
* logs of TX node 1.
*/
provo-dirt:/home/admin/tyler # echo cubic >/proc/sys/net/ipv4/tcp_congestion_control
provo-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
cubic
provo-dirt:/home/admin/tyler # date; ./tcp_perf.exe --server-ip 169.254.85.4 --server-port 10001 --msg-len 65536 --conn-num 8 -c -t --data-random --show-bandwidth-only
Fri Mar 25 08:23:18 EDT 2022
conn [0] local 169.254.85.1:49484 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.1:49486 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.1:49488 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.1:49490 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.1:49492 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.1:49494 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.1:49496 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.1:49498 peer 169.254.85.4:10001 created.
8 connection(s) created in total
tx thread of conn 0 started
tx thread of conn 1 started
tx thread of conn 2 started
tx thread of conn 3 started
tx thread of conn 4 started
tx thread of conn 5 started
tx thread of conn 6 started
tx thread of conn 7 started
[time lasts]: 1
tx_succ_bytes 0x76930000 (1,989,345,280)
[time lasts]: 2
tx_succ_bytes 0x639f0000 (1,671,364,608)
[time lasts]: 3
tx_succ_bytes 0x7e1d0000 (2,115,829,760)
[time lasts]: 4
tx_succ_bytes 0x770b0000 (1,997,209,600)
[time lasts]: 5
tx_succ_bytes 0x68900000 (1,754,267,648)
[time lasts]: 6
tx_succ_bytes 0x53dd0000 (1,406,992,384)
[time lasts]: 7
tx_succ_bytes 0x6eab0000 (1,856,700,416)
[time lasts]: 8
tx_succ_bytes 0x4c200000 (1,277,165,568)
[time lasts]: 9
tx_succ_bytes 0x6eab0000 (1,856,700,416)
[time lasts]: 10
tx_succ_bytes 0x793e0000 (2,034,106,368)
[time lasts]: 11
tx_succ_bytes 0x5b7a0000 (1,534,722,048)
[time lasts]: 12
tx_succ_bytes 0x6c220000 (1,814,167,552)
[time lasts]: 13
tx_succ_bytes 0x65660000 (1,701,183,488)
[time lasts]: 14
tx_succ_bytes 0x77860000 (2,005,270,528)
[time lasts]: 15
tx_succ_bytes 0x6eff0000 (1,862,205,440)
[time lasts]: 16
tx_succ_bytes 0x65330000 (1,697,841,152)
[time lasts]: 17
tx_succ_bytes 0x73600000 (1,935,671,296)
[time lasts]: 18
tx_succ_bytes 0x7cf30000 (2,096,300,032)
[time lasts]: 19
tx_succ_bytes 0x838d0000 (2,207,055,872)
[time lasts]: 20
tx_succ_bytes 0x8ea90000 (2,393,440,256)
[time lasts]: 21
tx_succ_bytes 0x5ef50000 (1,593,114,624)
[time lasts]: 22
tx_succ_bytes 0x693e0000 (1,765,670,912)
[time lasts]: 23
tx_succ_bytes 0x64390000 (1,681,457,152)
[time lasts]: 24
tx_succ_bytes 0x69400000 (1,765,801,984)
[time lasts]: 25
tx_succ_bytes 0x69fb0000 (1,778,057,216)
[time lasts]: 26
tx_succ_bytes 0x710a0000 (1,896,480,768)
[time lasts]: 27
tx_succ_bytes 0x70170000 (1,880,555,520)
[time lasts]: 28
tx_succ_bytes 0x7ed30000 (2,127,757,312)
[time lasts]: 29
tx_succ_bytes 0x70830000 (1,887,633,408)
[time lasts]: 30
tx_succ_bytes 0x6fcb0000 (1,875,574,784)
[time lasts]: 31
tx_succ_bytes 0x6dc30000 (1,841,496,064)
[time lasts]: 32
tx_succ_bytes 0x7f060000 (2,131,099,648)
[time lasts]: 33
tx_succ_bytes 0x79760000 (2,037,776,384)
[time lasts]: 34
tx_succ_bytes 0x78f30000 (2,029,191,168)
[time lasts]: 35
tx_succ_bytes 0x621a0000 (1,645,871,104)
[time lasts]: 36
tx_succ_bytes 0x7a5d0000 (2,052,915,200)
[time lasts]: 37
tx_succ_bytes 0x7fb80000 (2,142,765,056)
[time lasts]: 38
tx_succ_bytes 0x73ed0000 (1,944,911,872)
[time lasts]: 39
tx_succ_bytes 0x6fb20000 (1,873,936,384)
[time lasts]: 40
tx_succ_bytes 0x72110000 (1,913,716,736)
[time lasts]: 41
tx_succ_bytes 0x59240000 (1,495,531,520)
[time lasts]: 42
tx_succ_bytes 0x55e30000 (1,440,940,032)
[time lasts]: 43
tx_succ_bytes 0x69e20000 (1,776,418,816)
[time lasts]: 44
tx_succ_bytes 0x849a0000 (2,224,685,056)
[time lasts]: 45
tx_succ_bytes 0x7a930000 (2,056,454,144)
[time lasts]: 46
tx_succ_bytes 0x79230000 (2,032,336,896)
[time lasts]: 47
tx_succ_bytes 0x6d690000 (1,835,597,824)
[time lasts]: 48
tx_succ_bytes 0x77c60000 (2,009,464,832)
[time lasts]: 49
tx_succ_bytes 0x5c670000 (1,550,254,080)
[time lasts]: 50
tx_succ_bytes 0x6a210000 (1,780,547,584)
[time lasts]: 51
tx_succ_bytes 0x64ef0000 (1,693,384,704)
[time lasts]: 52
tx_succ_bytes 0x810a0000 (2,164,916,224)
[time lasts]: 53
tx_succ_bytes 0x7a4f0000 (2,051,997,696)
[time lasts]: 54
tx_succ_bytes 0x70ac0000 (1,890,320,384)
[time lasts]: 55
tx_succ_bytes 0x92260000 (2,451,963,904)
[time lasts]: 56
tx_succ_bytes 0x5d500000 (1,565,523,968)
[time lasts]: 57
tx_succ_bytes 0x59030000 (1,493,368,832)
[time lasts]: 58
tx_succ_bytes 0x7ad60000 (2,060,845,056)
[time lasts]: 59
tx_succ_bytes 0x765a0000 (1,985,609,728)
[time lasts]: 60
tx_succ_bytes 0x6c1e0000 (1,813,905,408)
[time lasts]: 61
tx_succ_bytes 0x6eeb0000 (1,860,894,720)
[time lasts]: 62
tx_succ_bytes 0x6ab50000 (1,790,246,912)
[time lasts]: 63
tx_succ_bytes 0x64cf0000 (1,691,287,552)
/*
* logs of TX node 2.
*/
sandy-dirt:/home/admin/tyler # echo cubic >/proc/sys/net/ipv4/tcp_congestion_control
sandy-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
cubic
sandy-dirt:/home/admin/tyler # date; ./tcp_perf.exe --server-ip 169.254.85.4 --server-port 10001 --msg-len 65536 --conn-num 8 -c -t --data-random --show-bandwidth-only
Fri Mar 25 08:23:16 EDT 2022
conn [0] local 169.254.85.2:37974 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.2:37978 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.2:37980 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.2:37982 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.2:37984 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.2:37986 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.2:37988 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.2:37990 peer 169.254.85.4:10001 created.
8 connection(s) created in total
tx thread of conn 0 started
tx thread of conn 1 started
tx thread of conn 2 started
tx thread of conn 3 started
tx thread of conn 4 started
tx thread of conn 5 started
tx thread of conn 6 started
tx thread of conn 7 started
[time lasts]: 1
tx_succ_bytes 0x87790000 (2,272,854,016)
[time lasts]: 2
tx_succ_bytes 0x62f50000 (1,660,223,488)
[time lasts]: 3
tx_succ_bytes 0x70030000 (1,879,244,800)
[time lasts]: 4
tx_succ_bytes 0x5b990000 (1,536,753,664)
[time lasts]: 5
tx_succ_bytes 0x64210000 (1,679,884,288)
[time lasts]: 6
tx_succ_bytes 0x6a0a0000 (1,779,040,256)
[time lasts]: 7
tx_succ_bytes 0x75720000 (1,970,405,376)
[time lasts]: 8
tx_succ_bytes 0x7d980000 (2,107,113,472)
[time lasts]: 9
tx_succ_bytes 0x8d070000 (2,366,046,208)
[time lasts]: 10
tx_succ_bytes 0x74030000 (1,946,353,664)
[time lasts]: 11
tx_succ_bytes 0x71f20000 (1,911,685,120)
[time lasts]: 12
tx_succ_bytes 0x7f900000 (2,140,143,616)
[time lasts]: 13
tx_succ_bytes 0x6f690000 (1,869,152,256)
[time lasts]: 14
tx_succ_bytes 0x8edd0000 (2,396,848,128)
[time lasts]: 15
tx_succ_bytes 0x80c30000 (2,160,263,168)
[time lasts]: 16
tx_succ_bytes 0x79a40000 (2,040,791,040)
[time lasts]: 17
tx_succ_bytes 0x82120000 (2,182,217,728)
[time lasts]: 18
tx_succ_bytes 0x69e30000 (1,776,484,352)
[time lasts]: 19
tx_succ_bytes 0x64c80000 (1,690,828,800)
[time lasts]: 20
tx_succ_bytes 0x6e430000 (1,849,884,672)
[time lasts]: 21
tx_succ_bytes 0x6b110000 (1,796,276,224)
[time lasts]: 22
tx_succ_bytes 0x753c0000 (1,966,866,432)
[time lasts]: 23
tx_succ_bytes 0x80c30000 (2,160,263,168)
[time lasts]: 24
tx_succ_bytes 0x7c700000 (2,087,714,816)
[time lasts]: 25
tx_succ_bytes 0x72ec0000 (1,928,069,120)
[time lasts]: 26
tx_succ_bytes 0x84d20000 (2,228,355,072)
[time lasts]: 27
tx_succ_bytes 0x70f60000 (1,895,170,048)
[time lasts]: 28
tx_succ_bytes 0x613c0000 (1,631,322,112)
[time lasts]: 29
tx_succ_bytes 0x7cf00000 (2,096,103,424)
[time lasts]: 30
tx_succ_bytes 0x61270000 (1,629,945,856)
[time lasts]: 31
tx_succ_bytes 0x608d0000 (1,619,853,312)
[time lasts]: 32
tx_succ_bytes 0x7cdd0000 (2,094,858,240)
[time lasts]: 33
tx_succ_bytes 0x6e430000 (1,849,884,672)
[time lasts]: 34
tx_succ_bytes 0x5d820000 (1,568,800,768)
[time lasts]: 35
tx_succ_bytes 0x78f40000 (2,029,256,704)
[time lasts]: 36
tx_succ_bytes 0x66c20000 (1,723,990,016)
[time lasts]: 37
tx_succ_bytes 0x7ba60000 (2,074,476,544)
[time lasts]: 38
tx_succ_bytes 0x58600000 (1,482,686,464)
[time lasts]: 39
tx_succ_bytes 0x64710000 (1,685,127,168)
[time lasts]: 40
tx_succ_bytes 0x6e410000 (1,849,753,600)
[time lasts]: 41
tx_succ_bytes 0x65d00000 (1,708,130,304)
[time lasts]: 42
tx_succ_bytes 0x83490000 (2,202,599,424)
[time lasts]: 43
tx_succ_bytes 0x95950000 (2,509,570,048)
[time lasts]: 44
tx_succ_bytes 0x81980000 (2,174,222,336)
[time lasts]: 45
tx_succ_bytes 0x6acb0000 (1,791,688,704)
[time lasts]: 46
tx_succ_bytes 0x73320000 (1,932,656,640)
[time lasts]: 47
tx_succ_bytes 0x70000000 (1,879,048,192)
[time lasts]: 48
tx_succ_bytes 0x73b40000 (1,941,176,320)
[time lasts]: 49
tx_succ_bytes 0x5bdd0000 (1,541,210,112)
[time lasts]: 50
tx_succ_bytes 0x7e980000 (2,123,890,688)
[time lasts]: 51
tx_succ_bytes 0x7cf00000 (2,096,103,424)
[time lasts]: 52
tx_succ_bytes 0x802c0000 (2,150,367,232)
[time lasts]: 53
tx_succ_bytes 0x61540000 (1,632,894,976)
[time lasts]: 54
tx_succ_bytes 0x5f690000 (1,600,716,800)
[time lasts]: 55
tx_succ_bytes 0x6cde0000 (1,826,488,320)
[time lasts]: 56
tx_succ_bytes 0x6af90000 (1,794,703,360)
[time lasts]: 57
tx_succ_bytes 0x9ba10000 (2,611,019,776)
[time lasts]: 58
tx_succ_bytes 0x82ea0000 (2,196,373,504)
[time lasts]: 59
tx_succ_bytes 0x80a30000 (2,158,166,016)
[time lasts]: 60
tx_succ_bytes 0x5d4c0000 (1,565,261,824)
[time lasts]: 61
tx_succ_bytes 0x789e0000 (2,023,620,608)
[time lasts]: 62
tx_succ_bytes 0x65cf0000 (1,708,064,768)
[time lasts]: 63
tx_succ_bytes 0x83050000 (2,198,142,976)
/*
* logs of TX node 3.
*/
orem-dirt:/home/admin/tyler # echo cubic >/proc/sys/net/ipv4/tcp_congestion_control
orem-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
cubic
orem-dirt:/home/admin/tyler # date; ./tcp_perf.exe --server-ip 169.254.85.4 --server-port 10001 --msg-len 65536 --conn-num 8 -c -t --data-random --show-bandwidth-only
Fri Mar 25 08:23:15 EDT 2022
conn [0] local 169.254.85.3:59676 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.3:59678 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.3:59680 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.3:59682 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.3:59684 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.3:59686 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.3:59688 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.3:59690 peer 169.254.85.4:10001 created.
8 connection(s) created in total
tx thread of conn 0 started
tx thread of conn 1 started
tx thread of conn 2 started
tx thread of conn 3 started
tx thread of conn 4 started
tx thread of conn 5 started
tx thread of conn 6 started
tx thread of conn 7 started
[time lasts]: 1
tx_succ_bytes 0x15b6d0000 (5,828,837,376)
[time lasts]: 2
tx_succ_bytes 0xb1590000 (2,975,399,936)
[time lasts]: 3
tx_succ_bytes 0x8e2e0000 (2,385,379,328)
[time lasts]: 4
tx_succ_bytes 0x79cd0000 (2,043,478,016)
[time lasts]: 5
tx_succ_bytes 0x7e280000 (2,116,550,656)
[time lasts]: 6
tx_succ_bytes 0x80dc0000 (2,161,901,568)
[time lasts]: 7
tx_succ_bytes 0x7fa90000 (2,141,782,016)
[time lasts]: 8
tx_succ_bytes 0x8d530000 (2,371,026,944)
[time lasts]: 9
tx_succ_bytes 0x6bf10000 (1,810,956,288)
[time lasts]: 10
tx_succ_bytes 0x7d2c0000 (2,100,035,584)
[time lasts]: 11
tx_succ_bytes 0x6cca0000 (1,825,177,600)
[time lasts]: 12
tx_succ_bytes 0x755f0000 (1,969,160,192)
[time lasts]: 13
tx_succ_bytes 0x78240000 (2,015,625,216)
[time lasts]: 14
tx_succ_bytes 0x7a880000 (2,055,733,248)
[time lasts]: 15
tx_succ_bytes 0x5e980000 (1,587,019,776)
[time lasts]: 16
tx_succ_bytes 0x59fe0000 (1,509,818,368)
[time lasts]: 17
tx_succ_bytes 0x6e370000 (1,849,098,240)
[time lasts]: 18
tx_succ_bytes 0x6db80000 (1,840,775,168)
[time lasts]: 19
tx_succ_bytes 0x72f60000 (1,928,724,480)
[time lasts]: 20
tx_succ_bytes 0x6b7c0000 (1,803,288,576)
[time lasts]: 21
tx_succ_bytes 0x64040000 (1,677,983,744)
[time lasts]: 22
tx_succ_bytes 0x63c80000 (1,674,051,584)
[time lasts]: 23
tx_succ_bytes 0x7abd0000 (2,059,206,656)
[time lasts]: 24
tx_succ_bytes 0x78b60000 (2,025,193,472)
[time lasts]: 25
tx_succ_bytes 0x73c00000 (1,941,962,752)
[time lasts]: 26
tx_succ_bytes 0x779e0000 (2,006,843,392)
[time lasts]: 27
tx_succ_bytes 0x6ba70000 (1,806,106,624)
[time lasts]: 28
tx_succ_bytes 0x73140000 (1,930,690,560)
[time lasts]: 29
tx_succ_bytes 0x79e20000 (2,044,854,272)
[time lasts]: 30
tx_succ_bytes 0x64210000 (1,679,884,288)
[time lasts]: 31
tx_succ_bytes 0x80b70000 (2,159,476,736)
[time lasts]: 32
tx_succ_bytes 0x79450000 (2,034,565,120)
[time lasts]: 33
tx_succ_bytes 0x72e30000 (1,927,479,296)
[time lasts]: 34
tx_succ_bytes 0x664f0000 (1,716,453,376)
[time lasts]: 35
tx_succ_bytes 0x81120000 (2,165,440,512)
[time lasts]: 36
tx_succ_bytes 0x6abd0000 (1,790,771,200)
[time lasts]: 37
tx_succ_bytes 0x88530000 (2,287,140,864)
[time lasts]: 38
tx_succ_bytes 0x5a210000 (1,512,112,128)
[time lasts]: 39
tx_succ_bytes 0x7e4a0000 (2,118,778,880)
[time lasts]: 40
tx_succ_bytes 0x86fe0000 (2,264,793,088)
[time lasts]: 41
tx_succ_bytes 0x73c10000 (1,942,028,288)
[time lasts]: 42
tx_succ_bytes 0x83620000 (2,204,237,824)
[time lasts]: 43
tx_succ_bytes 0x7f900000 (2,140,143,616)
[time lasts]: 44
tx_succ_bytes 0x699c0000 (1,771,831,296)
[time lasts]: 45
tx_succ_bytes 0x5e0d0000 (1,577,910,272)
[time lasts]: 46
tx_succ_bytes 0x66890000 (1,720,254,464)
[time lasts]: 47
tx_succ_bytes 0x75a10000 (1,973,485,568)
[time lasts]: 48
tx_succ_bytes 0x6b3f0000 (1,799,290,880)
[time lasts]: 49
tx_succ_bytes 0x764d0000 (1,984,757,760)
[time lasts]: 50
tx_succ_bytes 0x83320000 (2,201,092,096)
[time lasts]: 51
tx_succ_bytes 0x75ca0000 (1,976,172,544)
[time lasts]: 52
tx_succ_bytes 0x759e0000 (1,973,288,960)
[time lasts]: 53
tx_succ_bytes 0x6b160000 (1,796,603,904)
[time lasts]: 54
tx_succ_bytes 0x74430000 (1,950,547,968)
[time lasts]: 55
tx_succ_bytes 0x7ed90000 (2,128,150,528)
[time lasts]: 56
tx_succ_bytes 0x74ff0000 (1,962,868,736)
[time lasts]: 57
tx_succ_bytes 0x60dd0000 (1,625,096,192)
[time lasts]: 58
tx_succ_bytes 0x5eca0000 (1,590,296,576)
[time lasts]: 59
tx_succ_bytes 0x73890000 (1,938,358,272)
[time lasts]: 60
tx_succ_bytes 0x5e8c0000 (1,586,233,344)
[time lasts]: 61
tx_succ_bytes 0x7d010000 (2,097,217,536)
[time lasts]: 62
tx_succ_bytes 0x76cd0000 (1,993,146,368)
[time lasts]: 63
tx_succ_bytes 0x81620000 (2,170,683,392)
[time lasts]: 64
tx_succ_bytes 0x6b980000 (1,805,123,584)
/*
* counters on the switch.
* we can see, the rate of packet dropping is so high (~5%).
*/
hound-dirt# show queuing statistics interface ethernet 1/1/4
Interface ethernet1/1/4
Queue Packets Bytes Dropped-Packets Dropped-Bytes
0 0 0 0 0
1 9 882 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 21377065 191400217674 1263665 11321730380
6 0 0 0 0
7 0 0 0 0
hound-dirt#
fox-dirt# show queuing statistics interface ethernet 1/1/4
Interface ethernet1/1/4
Queue Packets Bytes Dropped-Packets Dropped-Bytes
0 10 654 0 0
1 6 588 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 21228491 189957815718 1192655 10677602488
6 0 0 0 0
7 0 0 0 0
fox-dirt#
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