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Message-ID: <20220325221129.00003cfc@tom.com>
Date: Fri, 25 Mar 2022 22:11:29 +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 3] dctcp + switch ECN-marking off
This is a wrong usage of dctcp.
Since the ECN-marking required by dctcp is disabled on the switch.
The condition of the bandwidth is about as bad as [Combination 2].
Since packet dropping occured.
/*
* before loading traffic, disable ECN-marking and clear the
* counters on the 2 switches.
*/
hound-dirt# configure terminal
hound-dirt(config)# wred LOSSLESS_ECN_5
hound-dirt(config-wred)# no random-detect ecn
hound-dirt(config-wred)# end
hound-dirt#
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# configure terminal
fox-dirt(config)# wred LOSSLESS_ECN_5
fox-dirt(config-wred)# no random-detect ecn
fox-dirt(config-wred)# end
fox-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 2 128 0 0
1 2 196 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 dctcp >/proc/sys/net/ipv4/tcp_congestion_control
ogden-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
dctcp
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 09:53:47 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 169.254.85.3:59692 created.
rx thread of conn 0 started
conn [1] local 169.254.85.4:10001 peer 169.254.85.3:59694 created.
rx thread of conn 1 started
conn [2] local 169.254.85.4:10001 peer 169.254.85.3:59696 created.
rx thread of conn 2 started
conn [3] local 169.254.85.4:10001 peer 169.254.85.3:59698 created.
rx thread of conn 3 started
conn [4] local 169.254.85.4:10001 peer 169.254.85.3:59700 created.
conn [5] local 169.254.85.4:10001 peer 169.254.85.3:59702 created.
rx thread of conn 4 started
conn [6] local 169.254.85.4:10001 peer 169.254.85.3:59706 created.
rx thread of conn 5 started
conn [7] local 169.254.85.4:10001 peer 169.254.85.3:59708 created.
rx thread of conn 6 started
rx thread of conn 7 started
conn [8] local 169.254.85.4:10001 peer 169.254.85.2:37992 created.
rx thread of conn 8 started
conn [9] local 169.254.85.4:10001 peer 169.254.85.2:37994 created.
rx thread of conn 9 started
conn [10] local 169.254.85.4:10001 peer 169.254.85.2:37996 created.
rx thread of conn 10 started
conn [11] local 169.254.85.4:10001 peer 169.254.85.2:37998 created.
rx thread of conn 11 started
conn [12] local 169.254.85.4:10001 peer 169.254.85.2:38000 created.
rx thread of conn 12 started
conn [13] local 169.254.85.4:10001 peer 169.254.85.2:38002 created.
rx thread of conn 13 started
conn [14] local 169.254.85.4:10001 peer 169.254.85.2:38004 created.
conn [15] local 169.254.85.4:10001 peer 169.254.85.2:38006 created.
rx thread of conn 14 started
rx thread of conn 15 started
[time lasts]: 1
rx_msg_succ_bytes 0x15b4f0000 (5,826,871,296)
conn [16] local 169.254.85.4:10001 peer 169.254.85.1:49500 created.
rx thread of conn 16 started
conn [17] local 169.254.85.4:10001 peer 169.254.85.1:49502 created.
rx thread of conn 17 started
conn [18] local 169.254.85.4:10001 peer 169.254.85.1:49504 created.
rx thread of conn 18 started
conn [19] local 169.254.85.4:10001 peer 169.254.85.1:49506 created.
rx thread of conn 19 started
conn [20] local 169.254.85.4:10001 peer 169.254.85.1:49508 created.
rx thread of conn 20 started
conn [21] local 169.254.85.4:10001 peer 169.254.85.1:49510 created.
rx thread of conn 21 started
conn [22] local 169.254.85.4:10001 peer 169.254.85.1:49512 created.
rx thread of conn 22 started
conn [23] local 169.254.85.4:10001 peer 169.254.85.1:49514 created.
24 connection(s) created in total
rx thread of conn 23 started
[time lasts]: 2
rx_msg_succ_bytes 0x159db0000 (5,802,491,904)
[time lasts]: 3
rx_msg_succ_bytes 0x15a770000 (5,812,715,520)
[time lasts]: 4
rx_msg_succ_bytes 0x159680000 (5,794,955,264)
[time lasts]: 5
rx_msg_succ_bytes 0x15b130000 (5,822,939,136)
[time lasts]: 6
rx_msg_succ_bytes 0x1574b0000 (5,759,500,288)
[time lasts]: 7
rx_msg_succ_bytes 0x159850000 (5,796,855,808)
[time lasts]: 8
rx_msg_succ_bytes 0x15ae60000 (5,819,990,016)
[time lasts]: 9
rx_msg_succ_bytes 0x15be90000 (5,836,963,840)
[time lasts]: 10
rx_msg_succ_bytes 0x158ef0000 (5,787,025,408)
[time lasts]: 11
rx_msg_succ_bytes 0x15ad30000 (5,818,744,832)
[time lasts]: 12
rx_msg_succ_bytes 0x159ee0000 (5,803,737,088)
[time lasts]: 13
rx_msg_succ_bytes 0x15bc00000 (5,834,276,864)
[time lasts]: 14
rx_msg_succ_bytes 0x1589d0000 (5,781,651,456)
[time lasts]: 15
rx_msg_succ_bytes 0x157f60000 (5,770,706,944)
[time lasts]: 16
rx_msg_succ_bytes 0x15a290000 (5,807,603,712)
[time lasts]: 17
rx_msg_succ_bytes 0x1582f0000 (5,774,442,496)
[time lasts]: 18
rx_msg_succ_bytes 0x15b3e0000 (5,825,757,184)
[time lasts]: 19
rx_msg_succ_bytes 0x15abc0000 (5,817,237,504)
[time lasts]: 20
rx_msg_succ_bytes 0x159010000 (5,788,205,056)
[time lasts]: 21
rx_msg_succ_bytes 0x15c080000 (5,838,995,456)
[time lasts]: 22
rx_msg_succ_bytes 0x159410000 (5,792,399,360)
[time lasts]: 23
rx_msg_succ_bytes 0x158fc0000 (5,787,877,376)
[time lasts]: 24
rx_msg_succ_bytes 0x1531c0000 (5,689,311,232)
[time lasts]: 25
rx_msg_succ_bytes 0x158520000 (5,776,736,256)
[time lasts]: 26
rx_msg_succ_bytes 0x15a720000 (5,812,387,840)
[time lasts]: 27
rx_msg_succ_bytes 0x157980000 (5,764,546,560)
[time lasts]: 28
rx_msg_succ_bytes 0x159660000 (5,794,824,192)
[time lasts]: 29
rx_msg_succ_bytes 0x157d30000 (5,768,413,184)
[time lasts]: 30
rx_msg_succ_bytes 0x15a890000 (5,813,895,168)
[time lasts]: 31
rx_msg_succ_bytes 0x159630000 (5,794,627,584)
[time lasts]: 32
rx_msg_succ_bytes 0x15cff0000 (5,855,182,848)
[time lasts]: 33
rx_msg_succ_bytes 0x15d700000 (5,862,588,416)
[time lasts]: 34
rx_msg_succ_bytes 0x158100000 (5,772,410,880)
[time lasts]: 35
rx_msg_succ_bytes 0x15ccf0000 (5,852,037,120)
[time lasts]: 36
rx_msg_succ_bytes 0x15b790000 (5,829,623,808)
[time lasts]: 37
rx_msg_succ_bytes 0x159570000 (5,793,841,152)
[time lasts]: 38
rx_msg_succ_bytes 0x15c070000 (5,838,929,920)
[time lasts]: 39
rx_msg_succ_bytes 0x158380000 (5,775,032,320)
[time lasts]: 40
rx_msg_succ_bytes 0x155d40000 (5,734,924,288)
[time lasts]: 41
rx_msg_succ_bytes 0x15af50000 (5,820,973,056)
[time lasts]: 42
rx_msg_succ_bytes 0x157c20000 (5,767,299,072)
[time lasts]: 43
rx_msg_succ_bytes 0x158530000 (5,776,801,792)
[time lasts]: 44
rx_msg_succ_bytes 0x15b2f0000 (5,824,774,144)
[time lasts]: 45
rx_msg_succ_bytes 0x15a660000 (5,811,601,408)
[time lasts]: 46
rx_msg_succ_bytes 0x158840000 (5,780,013,056)
[time lasts]: 47
rx_msg_succ_bytes 0x1585e0000 (5,777,522,688)
[time lasts]: 48
rx_msg_succ_bytes 0x158070000 (5,771,821,056)
[time lasts]: 49
rx_msg_succ_bytes 0x156ce0000 (5,751,308,288)
[time lasts]: 50
rx_msg_succ_bytes 0x158ed0000 (5,786,894,336)
[time lasts]: 51
rx_msg_succ_bytes 0x15a580000 (5,810,683,904)
[time lasts]: 52
rx_msg_succ_bytes 0x15adc0000 (5,819,334,656)
[time lasts]: 53
rx_msg_succ_bytes 0x1589d0000 (5,781,651,456)
[time lasts]: 54
rx_msg_succ_bytes 0x15b410000 (5,825,953,792)
[time lasts]: 55
rx_msg_succ_bytes 0x158890000 (5,780,340,736)
[time lasts]: 56
rx_msg_succ_bytes 0x153660000 (5,694,160,896)
[time lasts]: 57
rx_msg_succ_bytes 0x15a7a0000 (5,812,912,128)
[time lasts]: 58
rx_msg_succ_bytes 0x158ce0000 (5,784,862,720)
[time lasts]: 59
rx_msg_succ_bytes 0x157720000 (5,762,056,192)
[time lasts]: 60
rx_msg_succ_bytes 0x158d80000 (5,785,518,080)
[time lasts]: 61
rx_msg_succ_bytes 0x158440000 (5,775,818,752)
[time lasts]: 62
rx_msg_succ_bytes 0x157430000 (5,758,976,000)
[time lasts]: 63
rx_msg_succ_bytes 0x159c60000 (5,801,115,648)
[time lasts]: 64
rx_msg_succ_bytes 0x15a440000 (5,809,373,184)
^Ccaught signal 2
/*
* logs of TX node 1.
*/
provo-dirt:/home/admin/tyler # echo dctcp >/proc/sys/net/ipv4/tcp_congestion_control
provo-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
dctcp
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 09:53:52 EDT 2022
conn [0] local 169.254.85.1:49500 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.1:49502 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.1:49504 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.1:49506 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.1:49508 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.1:49510 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.1:49512 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.1:49514 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 0x82fd0000 (2,197,618,688)
[time lasts]: 2
tx_succ_bytes 0x7dbe0000 (2,109,603,840)
[time lasts]: 3
tx_succ_bytes 0x82120000 (2,182,217,728)
[time lasts]: 4
tx_succ_bytes 0x75890000 (1,971,912,704)
[time lasts]: 5
tx_succ_bytes 0x67040000 (1,728,315,392)
[time lasts]: 6
tx_succ_bytes 0x754d0000 (1,967,980,544)
[time lasts]: 7
tx_succ_bytes 0x74be0000 (1,958,608,896)
[time lasts]: 8
tx_succ_bytes 0x79670000 (2,036,793,344)
[time lasts]: 9
tx_succ_bytes 0x7fb00000 (2,142,240,768)
[time lasts]: 10
tx_succ_bytes 0x730d0000 (1,930,231,808)
[time lasts]: 11
tx_succ_bytes 0x6f9b0000 (1,872,429,056)
[time lasts]: 12
tx_succ_bytes 0x58d60000 (1,490,419,712)
[time lasts]: 13
tx_succ_bytes 0x72b40000 (1,924,399,104)
[time lasts]: 14
tx_succ_bytes 0x5f190000 (1,595,473,920)
[time lasts]: 15
tx_succ_bytes 0x66590000 (1,717,108,736)
[time lasts]: 16
tx_succ_bytes 0x72bc0000 (1,924,923,392)
[time lasts]: 17
tx_succ_bytes 0x69460000 (1,766,195,200)
[time lasts]: 18
tx_succ_bytes 0x7a8c0000 (2,055,995,392)
[time lasts]: 19
tx_succ_bytes 0x630c0000 (1,661,730,816)
[time lasts]: 20
tx_succ_bytes 0x608c0000 (1,619,787,776)
[time lasts]: 21
tx_succ_bytes 0x64680000 (1,684,537,344)
[time lasts]: 22
tx_succ_bytes 0x5d250000 (1,562,705,920)
[time lasts]: 23
tx_succ_bytes 0x7ba60000 (2,074,476,544)
[time lasts]: 24
tx_succ_bytes 0x76120000 (1,980,891,136)
[time lasts]: 25
tx_succ_bytes 0x5a2a0000 (1,512,701,952)
[time lasts]: 26
tx_succ_bytes 0x6e550000 (1,851,064,320)
[time lasts]: 27
tx_succ_bytes 0x60650000 (1,617,231,872)
[time lasts]: 28
tx_succ_bytes 0x78cb0000 (2,026,569,728)
[time lasts]: 29
tx_succ_bytes 0x71c80000 (1,908,932,608)
[time lasts]: 30
tx_succ_bytes 0x66190000 (1,712,914,432)
[time lasts]: 31
tx_succ_bytes 0x6c760000 (1,819,672,576)
[time lasts]: 32
tx_succ_bytes 0x77b20000 (2,008,154,112)
[time lasts]: 33
tx_succ_bytes 0x6eab0000 (1,856,700,416)
[time lasts]: 34
tx_succ_bytes 0x85160000 (2,232,811,520)
[time lasts]: 35
tx_succ_bytes 0x71f70000 (1,912,012,800)
[time lasts]: 36
tx_succ_bytes 0x6ec30000 (1,858,273,280)
[time lasts]: 37
tx_succ_bytes 0x7b1d0000 (2,065,498,112)
[time lasts]: 38
tx_succ_bytes 0x74eb0000 (1,961,558,016)
[time lasts]: 39
tx_succ_bytes 0x72eb0000 (1,928,003,584)
[time lasts]: 40
tx_succ_bytes 0x76700000 (1,987,051,520)
[time lasts]: 41
tx_succ_bytes 0x721a0000 (1,914,306,560)
[time lasts]: 42
tx_succ_bytes 0x69500000 (1,766,850,560)
[time lasts]: 43
tx_succ_bytes 0x70fe0000 (1,895,694,336)
[time lasts]: 44
tx_succ_bytes 0x7e640000 (2,120,482,816)
[time lasts]: 45
tx_succ_bytes 0x6a090000 (1,778,974,720)
[time lasts]: 46
tx_succ_bytes 0x6e2b0000 (1,848,311,808)
[time lasts]: 47
tx_succ_bytes 0x5e0f0000 (1,578,041,344)
[time lasts]: 48
tx_succ_bytes 0x670f0000 (1,729,036,288)
[time lasts]: 49
tx_succ_bytes 0x77390000 (2,000,224,256)
[time lasts]: 50
tx_succ_bytes 0x77360000 (2,000,027,648)
[time lasts]: 51
tx_succ_bytes 0x7c040000 (2,080,636,928)
[time lasts]: 52
tx_succ_bytes 0x678c0000 (1,737,228,288)
[time lasts]: 53
tx_succ_bytes 0x69720000 (1,769,078,784)
[time lasts]: 54
tx_succ_bytes 0x683a0000 (1,748,631,552)
[time lasts]: 55
tx_succ_bytes 0x769d0000 (1,990,000,640)
[time lasts]: 56
tx_succ_bytes 0x77270000 (1,999,044,608)
[time lasts]: 57
tx_succ_bytes 0x671a0000 (1,729,757,184)
[time lasts]: 58
tx_succ_bytes 0x6c4a0000 (1,816,788,992)
[time lasts]: 59
tx_succ_bytes 0x7c370000 (2,083,979,264)
[time lasts]: 60
tx_succ_bytes 0x82a00000 (2,191,523,840)
[time lasts]: 61
tx_succ_bytes 0x6f980000 (1,872,232,448)
[time lasts]: 62
tx_succ_bytes 0x75d50000 (1,976,893,440)
[time lasts]: 63
tx_succ_bytes 0x75a20000 (1,973,551,104)
/*
* logs of TX node 2.
*/
sandy-dirt:/home/admin/tyler # echo dctcp >/proc/sys/net/ipv4/tcp_congestion_control
sandy-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
dctcp
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 09:53:51 EDT 2022
conn [0] local 169.254.85.2:37992 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.2:37994 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.2:37996 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.2:37998 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.2:38000 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.2:38002 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.2:38004 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.2:38006 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 0x9acb0000 (2,596,995,072)
[time lasts]: 2
tx_succ_bytes 0x6d5b0000 (1,834,680,320)
[time lasts]: 3
tx_succ_bytes 0x77070000 (1,996,947,456)
[time lasts]: 4
tx_succ_bytes 0x5f3b0000 (1,597,702,144)
[time lasts]: 5
tx_succ_bytes 0x6f690000 (1,869,152,256)
[time lasts]: 6
tx_succ_bytes 0x80690000 (2,154,364,928)
[time lasts]: 7
tx_succ_bytes 0x6c880000 (1,820,852,224)
[time lasts]: 8
tx_succ_bytes 0x6a640000 (1,784,938,496)
[time lasts]: 9
tx_succ_bytes 0x6dc50000 (1,841,627,136)
[time lasts]: 10
tx_succ_bytes 0x694d0000 (1,766,653,952)
[time lasts]: 11
tx_succ_bytes 0x69ee0000 (1,777,205,248)
[time lasts]: 12
tx_succ_bytes 0x6e630000 (1,851,981,824)
[time lasts]: 13
tx_succ_bytes 0x79a50000 (2,040,856,576)
[time lasts]: 14
tx_succ_bytes 0x73f90000 (1,945,698,304)
[time lasts]: 15
tx_succ_bytes 0x79280000 (2,032,664,576)
[time lasts]: 16
tx_succ_bytes 0x743b0000 (1,950,023,680)
[time lasts]: 17
tx_succ_bytes 0x6be00000 (1,809,842,176)
[time lasts]: 18
tx_succ_bytes 0x63d10000 (1,674,641,408)
[time lasts]: 19
tx_succ_bytes 0x69570000 (1,767,309,312)
[time lasts]: 20
tx_succ_bytes 0x87ed0000 (2,280,456,192)
[time lasts]: 21
tx_succ_bytes 0x76730000 (1,987,248,128)
[time lasts]: 22
tx_succ_bytes 0x75fa0000 (1,979,318,272)
[time lasts]: 23
tx_succ_bytes 0x84760000 (2,222,325,760)
[time lasts]: 24
tx_succ_bytes 0x6de60000 (1,843,789,824)
[time lasts]: 25
tx_succ_bytes 0x701b0000 (1,880,817,664)
[time lasts]: 26
tx_succ_bytes 0x7d400000 (2,101,346,304)
[time lasts]: 27
tx_succ_bytes 0x77650000 (2,003,107,840)
[time lasts]: 28
tx_succ_bytes 0x71570000 (1,901,527,040)
[time lasts]: 29
tx_succ_bytes 0x798e0000 (2,039,349,248)
[time lasts]: 30
tx_succ_bytes 0x70490000 (1,883,832,320)
[time lasts]: 31
tx_succ_bytes 0x84820000 (2,223,112,192)
[time lasts]: 32
tx_succ_bytes 0x88690000 (2,288,582,656)
[time lasts]: 33
tx_succ_bytes 0x72a30000 (1,923,284,992)
[time lasts]: 34
tx_succ_bytes 0x79ae0000 (2,041,446,400)
[time lasts]: 35
tx_succ_bytes 0x6fce0000 (1,875,771,392)
[time lasts]: 36
tx_succ_bytes 0x69680000 (1,768,423,424)
[time lasts]: 37
tx_succ_bytes 0x65430000 (1,698,889,728)
[time lasts]: 38
tx_succ_bytes 0x84ff0000 (2,231,304,192)
[time lasts]: 39
tx_succ_bytes 0x7dd10000 (2,110,849,024)
[time lasts]: 40
tx_succ_bytes 0x70480000 (1,883,766,784)
[time lasts]: 41
tx_succ_bytes 0x7b8c0000 (2,072,772,608)
[time lasts]: 42
tx_succ_bytes 0x75a90000 (1,974,009,856)
[time lasts]: 43
tx_succ_bytes 0x83110000 (2,198,929,408)
[time lasts]: 44
tx_succ_bytes 0x739e0000 (1,939,734,528)
[time lasts]: 45
tx_succ_bytes 0x665a0000 (1,717,174,272)
[time lasts]: 46
tx_succ_bytes 0x6f0c0000 (1,863,057,408)
[time lasts]: 47
tx_succ_bytes 0x7b530000 (2,069,037,056)
[time lasts]: 48
tx_succ_bytes 0x850d0000 (2,232,221,696)
[time lasts]: 49
tx_succ_bytes 0x7c6c0000 (2,087,452,672)
[time lasts]: 50
tx_succ_bytes 0x72d60000 (1,926,627,328)
[time lasts]: 51
tx_succ_bytes 0x6f790000 (1,870,200,832)
[time lasts]: 52
tx_succ_bytes 0x65be0000 (1,706,950,656)
[time lasts]: 53
tx_succ_bytes 0x89470000 (2,303,131,648)
[time lasts]: 54
tx_succ_bytes 0x84290000 (2,217,279,488)
[time lasts]: 55
tx_succ_bytes 0x739a0000 (1,939,472,384)
[time lasts]: 56
tx_succ_bytes 0x60fb0000 (1,627,062,272)
[time lasts]: 57
tx_succ_bytes 0x82570000 (2,186,739,712)
[time lasts]: 58
tx_succ_bytes 0x76fb0000 (1,996,161,024)
[time lasts]: 59
tx_succ_bytes 0x71dc0000 (1,910,243,328)
[time lasts]: 60
tx_succ_bytes 0x73fd0000 (1,945,960,448)
[time lasts]: 61
tx_succ_bytes 0x710c0000 (1,896,611,840)
[time lasts]: 62
tx_succ_bytes 0x77ea0000 (2,011,824,128)
[time lasts]: 63
tx_succ_bytes 0x6b9b0000 (1,805,320,192)
/*
* logs of TX node 3.
*/
orem-dirt:/home/admin/tyler # echo dctcp >/proc/sys/net/ipv4/tcp_congestion_control
orem-dirt:/home/admin/tyler # cat /proc/sys/net/ipv4/tcp_congestion_control
dctcp
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 09:53:50 EDT 2022
conn [0] local 169.254.85.3:59692 peer 169.254.85.4:10001 created.
conn [1] local 169.254.85.3:59694 peer 169.254.85.4:10001 created.
conn [2] local 169.254.85.3:59696 peer 169.254.85.4:10001 created.
conn [3] local 169.254.85.3:59698 peer 169.254.85.4:10001 created.
conn [4] local 169.254.85.3:59700 peer 169.254.85.4:10001 created.
conn [5] local 169.254.85.3:59702 peer 169.254.85.4:10001 created.
conn [6] local 169.254.85.3:59706 peer 169.254.85.4:10001 created.
conn [7] local 169.254.85.3:59708 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 0x123670000 (4,888,920,064)
[time lasts]: 2
tx_succ_bytes 0x83950000 (2,207,580,160)
[time lasts]: 3
tx_succ_bytes 0x76440000 (1,984,167,936)
[time lasts]: 4
tx_succ_bytes 0x69280000 (1,764,229,120)
[time lasts]: 5
tx_succ_bytes 0x79240000 (2,032,402,432)
[time lasts]: 6
tx_succ_bytes 0x79ab0000 (2,041,249,792)
[time lasts]: 7
tx_succ_bytes 0x70370000 (1,882,652,672)
[time lasts]: 8
tx_succ_bytes 0x79660000 (2,036,727,808)
[time lasts]: 9
tx_succ_bytes 0x7e170000 (2,115,436,544)
[time lasts]: 10
tx_succ_bytes 0x719f0000 (1,906,245,632)
[time lasts]: 11
tx_succ_bytes 0x69e20000 (1,776,418,816)
[time lasts]: 12
tx_succ_bytes 0x7bbd0000 (2,075,983,872)
[time lasts]: 13
tx_succ_bytes 0x89910000 (2,307,981,312)
[time lasts]: 14
tx_succ_bytes 0x7a750000 (2,054,488,064)
[time lasts]: 15
tx_succ_bytes 0x7c7e0000 (2,088,632,320)
[time lasts]: 16
tx_succ_bytes 0x88b00000 (2,293,235,712)
[time lasts]: 17
tx_succ_bytes 0x71d10000 (1,909,522,432)
[time lasts]: 18
tx_succ_bytes 0x897a0000 (2,306,473,984)
[time lasts]: 19
tx_succ_bytes 0x78cf0000 (2,026,831,872)
[time lasts]: 20
tx_succ_bytes 0x7cc80000 (2,093,481,984)
[time lasts]: 21
tx_succ_bytes 0x803f0000 (2,151,612,416)
[time lasts]: 22
tx_succ_bytes 0x77170000 (1,997,996,032)
[time lasts]: 23
tx_succ_bytes 0x7bf80000 (2,079,850,496)
[time lasts]: 24
tx_succ_bytes 0x686c0000 (1,751,908,352)
[time lasts]: 25
tx_succ_bytes 0x764b0000 (1,984,626,688)
[time lasts]: 26
tx_succ_bytes 0x78b80000 (2,025,324,544)
[time lasts]: 27
tx_succ_bytes 0x77d40000 (2,010,382,336)
[time lasts]: 28
tx_succ_bytes 0x86830000 (2,256,732,160)
[time lasts]: 29
tx_succ_bytes 0x761b0000 (1,981,480,960)
[time lasts]: 30
tx_succ_bytes 0x6d880000 (1,837,629,440)
[time lasts]: 31
tx_succ_bytes 0x74060000 (1,946,550,272)
[time lasts]: 32
tx_succ_bytes 0x74aa0000 (1,957,298,176)
[time lasts]: 33
tx_succ_bytes 0x61a60000 (1,638,268,928)
[time lasts]: 34
tx_succ_bytes 0x735b0000 (1,935,343,616)
[time lasts]: 35
tx_succ_bytes 0x6f220000 (1,864,499,200)
[time lasts]: 36
tx_succ_bytes 0x73240000 (1,931,739,136)
[time lasts]: 37
tx_succ_bytes 0x755c0000 (1,968,963,584)
[time lasts]: 38
tx_succ_bytes 0x6e0a0000 (1,846,149,120)
[time lasts]: 39
tx_succ_bytes 0x682f0000 (1,747,910,656)
[time lasts]: 40
tx_succ_bytes 0x676b0000 (1,735,065,600)
[time lasts]: 41
tx_succ_bytes 0x71ca0000 (1,909,063,680)
[time lasts]: 42
tx_succ_bytes 0x6d740000 (1,836,318,720)
[time lasts]: 43
tx_succ_bytes 0x6f9d0000 (1,872,560,128)
[time lasts]: 44
tx_succ_bytes 0x6cec0000 (1,827,405,824)
[time lasts]: 45
tx_succ_bytes 0x82ae0000 (2,192,441,344)
[time lasts]: 46
tx_succ_bytes 0x783b0000 (2,017,132,544)
[time lasts]: 47
tx_succ_bytes 0x73300000 (1,932,525,568)
[time lasts]: 48
tx_succ_bytes 0x6e580000 (1,851,260,928)
[time lasts]: 49
tx_succ_bytes 0x77ab0000 (2,007,695,360)
[time lasts]: 50
tx_succ_bytes 0x67a80000 (1,739,063,296)
[time lasts]: 51
tx_succ_bytes 0x7a490000 (2,051,604,480)
[time lasts]: 52
tx_succ_bytes 0x73d00000 (1,943,011,328)
[time lasts]: 53
tx_succ_bytes 0x74110000 (1,947,271,168)
[time lasts]: 54
tx_succ_bytes 0x6d360000 (1,832,255,488)
[time lasts]: 55
tx_succ_bytes 0x730c0000 (1,930,166,272)
[time lasts]: 56
tx_succ_bytes 0x6ed20000 (1,859,256,320)
[time lasts]: 57
tx_succ_bytes 0x73de0000 (1,943,928,832)
[time lasts]: 58
tx_succ_bytes 0x70660000 (1,885,732,864)
[time lasts]: 59
tx_succ_bytes 0x723e0000 (1,916,665,856)
[time lasts]: 60
tx_succ_bytes 0x7a4c0000 (2,051,801,088)
[time lasts]: 61
tx_succ_bytes 0x6d8a0000 (1,837,760,512)
[time lasts]: 62
tx_succ_bytes 0x5f650000 (1,600,454,656)
[time lasts]: 63
tx_succ_bytes 0x74180000 (1,947,729,920)
/*
* 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 18 1218 0 0
1 36 3528 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 21037361 189283361906 953632 8583259654
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 41 2666 0 0
1 28 2744 0 0
2 0 0 0 0
3 0 0 0 0
4 0 0 0 0
5 21026196 189216241992 962777 8667910211
6 0 0 0 0
7 0 0 0 0
fox-dirt#
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