[root@dct00 ~]# ping tier2-02.ochep.ou.edu
PING tier2-02.ochep.ou.edu (129.15.40.251) 56(84) bytes of data.
64 bytes from tier2-02.ochep.ou.edu (129.15.40.251): icmp_seq=0 ttl=52 time=57.5 ms
64 bytes from tier2-02.ochep.ou.edu (129.15.40.251): icmp_seq=1 ttl=52 time=52.5 ms
64 bytes from tier2-02.ochep.ou.edu (129.15.40.251): icmp_seq=2 ttl=52 time=55.2 ms
64 bytes from tier2-02.ochep.ou.edu (129.15.40.251): icmp_seq=3 ttl=52 time=56.9 ms
64 bytes from tier2-02.ochep.ou.edu (129.15.40.251): icmp_seq=4 ttl=52 time=52.4 ms
[root@dct00 ~]# tracepath tier2-02.ochep.ou.edu
1: dct00.usatlas.bnl.gov (192.12.15.8) 0.164ms pmtu 1500
1: hsrp.usatlas.bnl.gov (192.12.15.24) 2.060ms
2: bnlmr1-bnlsite.es.net (198.124.216.177) 2.072ms
3: aoacr1-bnlmr1.es.net (134.55.217.58) asymm 4 4.111ms
4: chiccr1-aofacr1.es.net (134.55.218.93) asymm 5 30.003ms
5: chislsdn1-chicr1.es.net (134.55.207.34) asymm 6 31.105ms
6: chislmr1-chislsdn1.es.net (134.55.219.81) 29.894ms
7: star-esnet.abilene.iu.edu (198.125.140.230) asymm 8 296.813ms
8: so-4-3-0.0.rtr.kans.net.internet2.edu (64.57.28.36) asymm 9 41.959ms
9: ks-42-tenge4-1-110.r.greatplains.net (164.113.238.194) 40.699ms
10: 164.113.238.210 (164.113.238.210) asymm 8 45.146ms
11: 164.58.245.129 (164.58.245.129) asymm 9 45.150ms
12: 164.58.244.173 (164.58.244.173) asymm 10 50.142ms
13: 164.58.244.165 (164.58.244.165) asymm 10 51.622ms
14: 164.58.244.166 (164.58.244.166) asymm 10 52.512ms
15: 164.58.10.98 (164.58.10.98) asymm 11 52.654ms
16: no reply
17: tier2-02.ochep.ou.edu (129.15.40.251) asymm 13 54.048ms reached
Resume: pmtu 1500 hops 17 back 13
[root@dct00 ~]# iperf -s -w 4MB -i 4 ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 8.00 MByte (WARNING: requested 4.00 MByte) ------------------------------------------------------------ [ 4] local 192.12.15.8 port 5001 connected with 129.15.40.251 port 40103 [ 4] 0.0- 4.0 sec 36.2 MBytes 75.9 Mbits/sec [ 4] 4.0- 8.0 sec 53.5 MBytes 112 Mbits/sec [ 4] 8.0-12.0 sec 31.0 MBytes 65.0 Mbits/sec [ 4] 12.0-16.0 sec 38.3 MBytes 80.4 Mbits/sec [ 4] 16.0-20.0 sec 39.6 MBytes 83.0 Mbits/sec [ 4] 20.0-24.0 sec 33.1 MBytes 69.3 Mbits/sec [ 4] 24.0-28.0 sec 39.7 MBytes 83.3 Mbits/sec [ 4] 28.0-32.0 sec 40.3 MBytes 84.5 Mbits/sec [ 4] 32.0-36.0 sec 53.6 MBytes 112 Mbits/sec [ 4] 36.0-40.0 sec 50.5 MBytes 106 Mbits/sec [ 4] 40.0-44.0 sec 41.2 MBytes 86.5 Mbits/sec [ 4] 44.0-48.0 sec 48.8 MBytes 102 Mbits/sec [ 4] 48.0-52.0 sec 45.8 MBytes 95.9 Mbits/sec [ 4] 52.0-56.0 sec 48.5 MBytes 102 Mbits/sec [ 4] 56.0-60.0 sec 45.7 MBytes 95.9 Mbits/sec [ 4] 0.0-60.1 sec 646 MBytes 90.3 Mbits/sec
[root@dct00 ~]# iperf -c tier2-02.ochep.ou.edu -w 4MB -t 60 -i 4 -p 64000 ------------------------------------------------------------ Client connecting to tier2-02.ochep.ou.edu, TCP port 64000 TCP window size: 8.00 MByte (WARNING: requested 4.00 MByte) ------------------------------------------------------------ [ 3] local 192.12.15.8 port 58818 connected with 129.15.40.251 port 64000 [ 3] 0.0- 4.0 sec 18.7 MBytes 39.3 Mbits/sec [ 3] 4.0- 8.0 sec 15.9 MBytes 33.4 Mbits/sec [ 3] 8.0-12.0 sec 56.4 MBytes 118 Mbits/sec [ 3] 12.0-16.0 sec 58.5 MBytes 123 Mbits/sec [ 3] 16.0-20.0 sec 48.4 MBytes 102 Mbits/sec [ 3] 20.0-24.0 sec 44.1 MBytes 92.4 Mbits/sec [ 3] 24.0-28.0 sec 50.4 MBytes 106 Mbits/sec [ 3] 28.0-32.0 sec 52.3 MBytes 110 Mbits/sec [ 3] 32.0-36.0 sec 38.3 MBytes 80.3 Mbits/sec [ 3] 36.0-40.0 sec 6.03 MBytes 12.6 Mbits/sec [ 3] 40.0-44.0 sec 24.2 MBytes 50.7 Mbits/sec [ 3] 44.0-48.0 sec 58.3 MBytes 122 Mbits/sec [ 3] 48.0-52.0 sec 56.6 MBytes 119 Mbits/sec [ 3] 52.0-56.0 sec 50.6 MBytes 106 Mbits/sec [ 3] 56.0-60.0 sec 58.3 MBytes 122 Mbits/sec [ 3] 0.0-60.1 sec 637 MBytes 88.9 Mbits/sec
[root@dct00 ~]# iperf -s -w 4MB -i 4 ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 8.00 MByte (WARNING: requested 4.00 MByte) ------------------------------------------------------------ [ 4] local 192.12.15.8 port 5001 connected with 129.15.40.251 port 40462 [ 4] 0.0- 4.0 sec 103 MBytes 215 Mbits/sec [ 4] 4.0- 8.0 sec 128 MBytes 269 Mbits/sec [ 4] 8.0-12.0 sec 129 MBytes 271 Mbits/sec [ 4] 12.0-16.0 sec 119 MBytes 250 Mbits/sec [ 4] 16.0-20.0 sec 113 MBytes 237 Mbits/sec [ 4] 20.0-24.0 sec 94.0 MBytes 197 Mbits/sec [ 4] 24.0-28.0 sec 91.4 MBytes 192 Mbits/sec [ 4] 28.0-32.0 sec 86.2 MBytes 181 Mbits/sec [ 4] 32.0-36.0 sec 87.9 MBytes 184 Mbits/sec [ 4] 36.0-40.0 sec 27.5 MBytes 57.6 Mbits/sec [ 4] 40.0-44.0 sec 20.4 MBytes 42.9 Mbits/sec [ 4] 44.0-48.0 sec 23.4 MBytes 49.2 Mbits/sec [ 4] 48.0-52.0 sec 59.8 MBytes 125 Mbits/sec [ 4] 52.0-56.0 sec 100 MBytes 210 Mbits/sec [ 4] 56.0-60.0 sec 83.1 MBytes 174 Mbits/sec [ 4] 0.0-60.2 sec 1.24 GBytes 177 Mbits/secAfter we tuned the network, the performance does not have too much improvement.
[root@dct00 ~]# iperf -s -w 16MB -i 4 ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 32.0 MByte (WARNING: requested 16.0 MByte) ------------------------------------------------------------ [ 4] local 192.12.15.8 port 5001 connected with 129.15.40.247 port 43121 [ 4] 0.0- 4.0 sec 5.12 MBytes 10.7 Mbits/sec [ 4] 4.0- 8.0 sec 51.7 MBytes 109 Mbits/sec [ 4] 8.0-12.0 sec 70.3 MBytes 147 Mbits/sec [ 4] 12.0-16.0 sec 69.9 MBytes 147 Mbits/sec [ 4] 16.0-20.0 sec 61.6 MBytes 129 Mbits/sec [ 4] 20.0-24.0 sec 63.3 MBytes 133 Mbits/sec [ 4] 24.0-28.0 sec 70.7 MBytes 148 Mbits/sec [ 4] 28.0-32.0 sec 112 MBytes 236 Mbits/sec [ 4] 32.0-36.0 sec 110 MBytes 230 Mbits/sec [ 4] 36.0-40.0 sec 61.0 MBytes 128 Mbits/sec [ 4] 40.0-44.0 sec 71.7 MBytes 150 Mbits/sec [ 4] 44.0-48.0 sec 60.6 MBytes 127 Mbits/sec [ 4] 48.0-52.0 sec 46.8 MBytes 98.2 Mbits/sec [ 4] 52.0-56.0 sec 50.1 MBytes 105 Mbits/sec [ 4] 56.0-60.0 sec 56.2 MBytes 118 Mbits/sec [ 4] 0.0-60.5 sec 971 MBytes 135 Mbits/secWe tested the network performance from BNL to OU:
[root@dct00 ~]# iperf -c 129.15.40.247 -w 16MB -i 4 -t 60 -p 64000 ------------------------------------------------------------ Client connecting to 129.15.40.247, TCP port 64000 TCP window size: 32.0 MByte (WARNING: requested 16.0 MByte) ------------------------------------------------------------ [ 3] local 192.12.15.8 port 58821 connected with 129.15.40.247 port 64000 [ 3] 0.0- 4.0 sec 31.4 MBytes 65.9 Mbits/sec [ 3] 4.0- 8.0 sec 0.00 Bytes 0.00 bits/sec [ 3] 8.0-12.0 sec 0.00 Bytes 0.00 bits/sec [ 3] 12.0-16.0 sec 56.5 MBytes 119 Mbits/sec [ 3] 16.0-20.0 sec 90.8 MBytes 191 Mbits/sec [ 3] 20.0-24.0 sec 82.3 MBytes 173 Mbits/sec [ 3] 24.0-28.0 sec 89.5 MBytes 188 Mbits/sec [ 3] 28.0-32.0 sec 98.7 MBytes 207 Mbits/sec [ 3] 32.0-36.0 sec 90.0 MBytes 189 Mbits/sec [ 3] 36.0-40.0 sec 40.2 MBytes 84.2 Mbits/sec [ 3] 40.0-44.0 sec 40.2 MBytes 84.3 Mbits/sec [ 3] 44.0-48.0 sec 135 MBytes 282 Mbits/sec [ 3] 48.0-52.0 sec 126 MBytes 265 Mbits/sec [ 3] 52.0-56.0 sec 143 MBytes 299 Mbits/sec [ 3] 56.0-60.0 sec 118 MBytes 248 Mbits/sec [ 3] 0.0-60.2 sec 1.11 GBytes 159 Mbits/secThen we increased the number of TCP streams to see whether the performance increased: We first tried five TCP streams, and then we tried 10 TCP streams.
[root@dct00 ~]# iperf -s -w 2MB -i 4 ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 4.00 MByte (WARNING: requested 2.00 MByte) ------------------------------------------------------------ [root@dct00 ~]# iperf -s -w 2MB -i 4 | grep -i SUM [SUM] 0.0- 4.0 sec 184 MBytes 387 Mbits/sec [SUM] 4.0- 8.0 sec 228 MBytes 477 Mbits/sec [SUM] 8.0-12.0 sec 223 MBytes 468 Mbits/sec [SUM] 12.0-16.0 sec 297 MBytes 623 Mbits/sec [SUM] 16.0-20.0 sec 359 MBytes 753 Mbits/sec [SUM] 20.0-24.0 sec 334 MBytes 699 Mbits/sec [SUM] 24.0-28.0 sec 286 MBytes 599 Mbits/sec [SUM] 28.0-32.0 sec 329 MBytes 691 Mbits/sec [SUM] 32.0-36.0 sec 340 MBytes 714 Mbits/sec [SUM] 36.0-40.0 sec 429 MBytes 899 Mbits/sec [SUM] 40.0-44.0 sec 325 MBytes 681 Mbits/sec [SUM] 44.0-48.0 sec 376 MBytes 789 Mbits/sec [SUM] 48.0-52.0 sec 361 MBytes 756 Mbits/sec [SUM] 52.0-56.0 sec 420 MBytes 880 Mbits/sec [SUM] 56.0-60.0 sec 364 MBytes 763 Mbits/sec [SUM] 0.0-60.4 sec 4.77 GBytes 678 Mbits/secThen we used 10 TCP streams. The performance reached the wire speed of local network card.
[root@dct00 ~]# iperf -s -w 2MB -i 4 | grep -i SUM [SUM] 0.0- 4.0 sec 322 MBytes 676 Mbits/sec [SUM] 4.0- 8.0 sec 334 MBytes 701 Mbits/sec [SUM] 8.0-12.0 sec 444 MBytes 932 Mbits/sec [SUM] 12.0-16.0 sec 427 MBytes 894 Mbits/sec [SUM] 16.0-20.0 sec 346 MBytes 725 Mbits/sec [SUM] 20.0-24.0 sec 351 MBytes 736 Mbits/sec [SUM] 24.0-28.0 sec 428 MBytes 897 Mbits/sec [SUM] 28.0-32.0 sec 441 MBytes 925 Mbits/sec [SUM] 32.0-36.0 sec 428 MBytes 897 Mbits/sec [SUM] 36.0-40.0 sec 426 MBytes 893 Mbits/sec [SUM] 40.0-44.0 sec 446 MBytes 936 Mbits/sec [SUM] 44.0-48.0 sec 406 MBytes 851 Mbits/sec [SUM] 48.0-52.0 sec 437 MBytes 917 Mbits/sec [SUM] 52.0-56.0 sec 409 MBytes 857 Mbits/sec [SUM] 56.0-60.0 sec 444 MBytes 932 Mbits/sec [SUM] 0.0-60.9 sec 6.02 GBytes 848 Mbits/secThen we tested the network performance from BNL to OU. We started with five TCP streams. Here are the results with five TCP streams.
[root@dct00 ~]# iperf -c 129.15.40.247 -w 2MB -i 4 -t 60 -p 64000 -P 5 | grep -i SUM [SUM] 0.0- 4.0 sec 142 MBytes 298 Mbits/sec [SUM] 4.0- 8.0 sec 147 MBytes 308 Mbits/sec [SUM] 8.0-12.0 sec 167 MBytes 351 Mbits/sec [SUM] 12.0-16.0 sec 169 MBytes 353 Mbits/sec [SUM] 16.0-20.0 sec 108 MBytes 227 Mbits/sec [SUM] 20.0-24.0 sec 167 MBytes 350 Mbits/sec [SUM] 24.0-28.0 sec 193 MBytes 404 Mbits/sec [SUM] 28.0-32.0 sec 176 MBytes 368 Mbits/sec [SUM] 32.0-36.0 sec 176 MBytes 370 Mbits/sec [SUM] 36.0-40.0 sec 184 MBytes 387 Mbits/sec [SUM] 40.0-44.0 sec 180 MBytes 378 Mbits/sec [SUM] 44.0-48.0 sec 168 MBytes 352 Mbits/sec [SUM] 48.0-52.0 sec 175 MBytes 367 Mbits/sec [SUM] 52.0-56.0 sec 176 MBytes 369 Mbits/sec [SUM] 0.0-60.2 sec 2.45 GBytes 349 Mbits/sec [root@dct00 ~]#Then we tested with 10 TCP streams. We did not see any performance improvement.
[root@dct00 ~]# iperf -c 129.15.40.247 -w 2MB -i 4 -t 60 -p 64000 -P 10 | grep -i SUM [SUM] 0.0- 4.0 sec 172 MBytes 360 Mbits/sec [SUM] 4.0- 8.0 sec 170 MBytes 358 Mbits/sec [SUM] 8.0-12.0 sec 146 MBytes 307 Mbits/sec [SUM] 12.0-16.0 sec 66.9 MBytes 140 Mbits/sec [SUM] 16.0-20.0 sec 130 MBytes 273 Mbits/sec [SUM] 20.0-24.0 sec 133 MBytes 279 Mbits/sec [SUM] 24.0-28.0 sec 172 MBytes 361 Mbits/sec [SUM] 28.0-32.0 sec 177 MBytes 370 Mbits/sec [SUM] 32.0-36.0 sec 213 MBytes 446 Mbits/sec [SUM] 36.0-40.0 sec 204 MBytes 427 Mbits/sec [SUM] 40.0-44.0 sec 174 MBytes 366 Mbits/sec [SUM] 44.0-48.0 sec 172 MBytes 361 Mbits/sec [SUM] 48.0-52.0 sec 174 MBytes 364 Mbits/sec [SUM] 52.0-56.0 sec 195 MBytes 410 Mbits/sec [SUM] 56.0-60.0 sec 186 MBytes 390 Mbits/sec [SUM] 0.0-60.5 sec 2.43 GBytes 344 Mbits/sec [root@dct00 ~]#
[root@dct00 ~]# iperf -c 129.15.40.247 -w 2MB -i 4 -t 60 -p 64000 -P 20 | grep -i SUM [SUM] 0.0- 4.0 sec 247 MBytes 519 Mbits/sec [SUM] 4.0- 8.0 sec 205 MBytes 430 Mbits/sec [SUM] 8.0-12.0 sec 191 MBytes 401 Mbits/sec [SUM] 12.0-16.0 sec 171 MBytes 359 Mbits/sec [SUM] 16.0-20.0 sec 161 MBytes 337 Mbits/sec [SUM] 20.0-24.0 sec 186 MBytes 391 Mbits/sec [SUM] 24.0-28.0 sec 223 MBytes 468 Mbits/sec [SUM] 28.0-32.0 sec 216 MBytes 454 Mbits/sec [SUM] 32.0-36.0 sec 174 MBytes 365 Mbits/sec [SUM] 36.0-40.0 sec 212 MBytes 445 Mbits/sec [SUM] 40.0-44.0 sec 221 MBytes 464 Mbits/sec [SUM] 44.0-48.0 sec 224 MBytes 469 Mbits/sec [SUM] 48.0-52.0 sec 141 MBytes 295 Mbits/sec [SUM] 52.0-56.0 sec 151 MBytes 317 Mbits/sec [SUM] 0.0-60.7 sec 2.82 GBytes 399 Mbits/sec
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