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Background high-speed tcp Transfer Tests Web 100TCP Tuning  

Transfer Tests

From: HEP@UCL, London, UK pc43@hep.ucl.ac.uk

To:

SLAC, California, USA evagore.slac.stanford.edu
Date: 1st August 2001  

Transfer tests using iperf with 'readvars' web100 monitoring. Tests were conducted with 30 second transfers for various buffer sizes.


Settings

 

 

Buffer Size (kb) Test Number Transfer Rate (Mbits/sec) Recoveries (Delta) Timeouts (Delta) PktsOut (Delta) DataPktsOut (Delta) %DataPktsOut AckPktsOut (Delta) TimeoutsAfterFR (Delta) PktsRetrans (Delta) %PktsRetrans DupAcksIn (Delta) DSACKDups (Delta) SACKsRcvd (Delta) DataBytesOut (Delta) BytesRetrans (Delta) %BytesRetrans SumRTT (Delta) CountRTT (Delta) AveragRTT Ave Dynamic Buffer (kB)
4 1 0.45 0 0 1285 1284 0.9992218 1 0 0 0 0 0 0 1753088 0 0.0000000 92010 655 140.4732824 8  
8 1 0.79 0 0 2244 2243 0.9995544 1 0 0 0 0 0 0 3063808 0 0.0000000 219440 1463 149.9931647 14.52451509  
16 1 1.60 0 0 4329 4328 0.9997690 1 0 0 0 0 0 0 5911728 0 0.0000000 356570 2426 146.9785655 27.9609375  
32 1 3.10 0 0 8429 8428 0.9998814 1 0 0 0 0 0 0 11515056 0 0.0000000 615780 4237 145.3339627 54.53582974  
64 1 6.20 0 0 17104 17103 0.9999415 1 0 0 0 0 0 0 23368880 0 0.0000000 1104060 7880 140.1091371 107.6864224  
96 1 9.20 0 0 25335 25334 0.9999605 1 0 0 0 1 2 3 34616496 0 0.0000000 1617930 11564 139.9109305 158.7168642  
128 1 12.20 0 0 33773 33772 0.9999704 1 0 0 0 0 0 0 46145536 0 0.0000000 2107250 14977 140.6990719 212.420528  
192 1 14.80 1 0 38957 38951 0.9998460 1 0 5 0.000128347 238 241 29630 55926784 6744 0.0001206 2712720 19357 140.1415509 255.7176724  
256 1 8.50 1 0 22353 22342 0.9995079 1 0 10 0.000447367 139 66 4983 32350208 14480 0.0004476 1608460 11525 139.5626898 146.9162177  
256 2 13.60 1 0 35448 35446 0.9999436 1 0 1 2.82103E-05 246 247 30628 51322880 1448 0.0000282 2527000 18083 139.7445114    
256 3 11.60 2 0 30210 30197 0.9995697 1 0 12 0.000397219 498 369 67043 43655168 16880 0.0003867 2136830 15279 139.854048    
384 1 12.30 2 0 32262 32250 0.9996280 1 0 11 0.000340958 680 665 101876 46691504 15928 0.0003411 2276190 16294 139.6949797 211.2435345  
384 2 14.50 2 0 38121 38018 0.9972981 1 0 102 0.002675691 647 546 147591 55017472 139760 0.0025403 2700650 19282 140.0606784    
384 3 17.10 2 0 45565 45455 0.9975859 1 0 109 0.002392187 651 78 149691 64782336 148904 0.0022985 3104440 22052 140.7781607    
512 1 14.80 3 0 39320 39150 0.9956765 1 0 169 0.004298067 1086 1006 270595 56636592 231816 0.0040930 2741160 19571 140.0623371 272.6802263  
512 2 9.10 1 1 24065 24057 0.9996676 1 1 7 0.000290879 609 24 185473 34832384 10136 0.0002910 1699910 12150 139.9102881  
512 3 25.90 1 0 67604 67505 0.9985356 1 0 98 0.001449618 558 548 81488 97746944 141904 0.0014517 4807470 34089 141.0270175  
640 1 0.54 0 0 2268 2267 0.9995591 1 0 0 0 0 0 0 3282096 0 0.0000000 238400 1614 147.7075589 9.8984375
768 1 54.00 0 0 2440 2439 0.9995902 1 0 0 0 0 0 0 3530752 0 0.0000000 248050 1675 148.0895522 9.8984375
1024 1 0.55 0 0 2785 2784 0.9996409 1 0 0 0 0 0 0 4030464 0 0.0000000 278690 1902 146.5247108 9.8984375
1024 2 0.55 0 0 2785 2784 0.9996409 1 0 0 0 0 0 0 4030464 0 0.0000000 292330 1994 146.6048144  

 

 

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© 2001-2003, Yee-Ting Li, email: ytl@hep.ucl.ac.uk, Tel: +44 (0) 20 7679 1376, Fax: +44 (0) 20 7679 7145
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