Experiment Data when Tulip driver are compiled as modules in the kernel
experiment 2:

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < ncurses-5.2.tar.gz
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.23 real seconds = 5069.56 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.62, calls/sec = 633.70
ttcp-t: 0.0user 0.0sys 0:03real 0% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.24 real seconds = 5063.46 KB/sec +++
ttcp-r: 6956 I/O calls, msec/call = 0.48, calls/sec = 2149.75
ttcp-r: 0.0user 0.2sys 0:03real 9% 0i+0d 0maxrss 0+2pf 0+0csw



experiment 2:


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < ncurses-5.2.tar.gz
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.43 real seconds = 4781.05 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.71, calls/sec = 597.63
ttcp-t: 0.0user 0.1sys 0:03real 4% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.43 real seconds = 4776.18 KB/sec +++
ttcp-r: 6965 I/O calls, msec/call = 0.50, calls/sec = 2030.40
ttcp-r: 0.0user 0.2sys 0:03real 5% 0i+0d 0maxrss 0+2pf 0+0csw


experiment 2:


[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar.gz
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 28338216 bytes in 5.74 real seconds = 4817.11 KB/sec +++
ttcp-t: 3460 I/O calls, msec/call = 1.70, calls/sec = 602.27
ttcp-t: 0.0user 0.1sys 0:05real 3% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 28338216 bytes in 5.75 real seconds = 4813.63 KB/sec +++
ttcp-r: 11833 I/O calls, msec/call = 0.50, calls/sec = 2058.23
ttcp-r: 0.0user 0.2sys 0:05real 4% 0i+0d 0maxrss 0+2pf 0+0csw


experiment 2
[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar.gz
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 28338216 bytes in 5.44 real seconds = 5083.01 KB/sec +++
ttcp-t: 3460 I/O calls, msec/call = 1.61, calls/sec = 635.51
ttcp-t: 0.0user 0.1sys 0:05real 3% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 28338216 bytes in 5.45 real seconds = 5079.36 KB/sec +++
ttcp-r: 11748 I/O calls, msec/call = 0.47, calls/sec = 2156.26
ttcp-r: 0.0user 0.3sys 0:05real 6% 0i+0d 0maxrss 0+2pf 0+0csw




RE do experiment 2. dublin, prague, madrid runs kernel 2.4.10 with tulip driver
compiled as module.


experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.42 real seconds = 4787.79 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.71, calls/sec = 598.47
ttcp-t: 0.0user 0.0sys 0:03real 0% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.43 real seconds = 4779.23 KB/sec +++
ttcp-r: 6967 I/O calls, msec/call = 0.50, calls/sec = 2032.28
ttcp-r: 0.0user 0.4sys 0:03real 14% 0i+0d 0maxrss 0+2pf 0+0csw



experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.23 real seconds = 5072.74 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.61, calls/sec = 634.09
ttcp-t: 0.0user 0.0sys 0:03real 1% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.24 real seconds = 5064.24 KB/sec +++
ttcp-r: 6953 I/O calls, msec/call = 0.48, calls/sec = 2149.15
ttcp-r: 0.0user 0.3sys 0:03real 12% 0i+0d 0maxrss 0+2pf 0+0csw


experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.22 real seconds = 5086.84 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.61, calls/sec = 635.86
ttcp-t: 0.0user 0.0sys 0:03real 0% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.22 real seconds = 5084.59 KB/sec +++
ttcp-r: 6960 I/O calls, msec/call = 0.47, calls/sec = 2159.96
ttcp-r: 0.0user 0.0sys 0:03real 2% 0i+0d 0maxrss 0+2pf 0+0csw



experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 3.23 real seconds = 5070.57 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 1.62, calls/sec = 633.82
ttcp-t: 0.0user 0.0sys 0:03real 0% 0i+0d 0maxrss 0+2pf 0+0csw

[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 3.44 real seconds = 4764.81 KB/sec +++
ttcp-r: 6959 I/O calls, msec/call = 0.51, calls/sec = 2023.82
ttcp-r: 0.0user 0.1sys 0:03real 4% 0i+0d 0maxrss 0+2pf 0+0csw


experiment 2

USING very larg amount of traffic: 124MB


experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 23.98 real seconds = 5084.83 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 1.61, calls/sec = 635.61
ttcp-t: 0.0user 0.7sys 0:23real 3% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 24.18 real seconds = 5041.02 KB/sec +++
ttcp-r: 51792 I/O calls, msec/call = 0.48, calls/sec = 2141.62
ttcp-r: 0.0user 1.7sys 0:24real 7% 0i+0d 0maxrss 0+2pf 0+0csw



experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 24.17 real seconds = 5044.24 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 1.62, calls/sec = 630.54
ttcp-t: 0.0user 0.8sys 0:24real 3% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 24.17 real seconds = 5043.17 KB/sec +++
ttcp-r: 51789 I/O calls, msec/call = 0.48, calls/sec = 2142.41
ttcp-r: 0.0user 2.1sys 0:24real 9% 0i+0d 0maxrss 0+2pf 0+0csw


experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 24.18 real seconds = 5042.22 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 1.62, calls/sec = 630.29
ttcp-t: 0.0user 0.5sys 0:24real 2% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 24.39 real seconds = 4998.50 KB/sec +++
ttcp-r: 51767 I/O calls, msec/call = 0.48, calls/sec = 2122.53
ttcp-r: 0.0user 1.6sys 0:24real 6% 0i+0d 0maxrss 0+2pf 0+0csw


From the above experiments of experiment 2. we can see that the speed of
routed connection is stable. about 5000KB/sec NORMAL


NOW reboot dublin to kernel 2.4.10 with Tulip driver directly compiled in it

 

Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11549.29 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1443.66
ttcp-t: 0.0user 0.1sys 0:01real 7% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11476.33 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8116.93
ttcp-r: 0.0user 0.2sys 0:01real 20% 0i+0d 0maxrss 0+1pf 0+0csw



Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11529.73 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.22
ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11478.58 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8118.52
ttcp-r: 0.0user 0.0sys 0:01real 5% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11536.11 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1442.01
ttcp-t: 0.0user 0.0sys 0:01real 0% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11474.88 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8115.90
ttcp-r: 0.0user 0.3sys 0:01real 22% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11535.76 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.97
ttcp-t: 0.0user 0.0sys 0:01real 0% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11479.03 KB/sec +++
ttcp-r: 11590 I/O calls, msec/call = 0.13, calls/sec = 8120.24
ttcp-r: 0.0user 0.0sys 0:01real 6% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11524.24 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1440.53
ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11479.54 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8119.20
ttcp-r: 0.0user 0.2sys 0:01real 16% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2.

USING very large amount of traffic: 124MB

re-do experiments for a few times

experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11497.34 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.19
ttcp-t: 0.0user 0.8sys 0:10real 7% 0i+0d 0maxrss 0+2pf 0+0csw

[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11488.55 KB/sec +++
ttcp-r: 86210 I/O calls, msec/call = 0.13, calls/sec = 8124.26
ttcp-r: 0.0user 1.3sys 0:10real 12% 0i+0d 0maxrss 0+2pf 0+0csw



Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.61 real seconds = 11494.47 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1436.83
ttcp-t: 0.0user 0.8sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11485.59 KB/sec +++
ttcp-r: 86212 I/O calls, msec/call = 0.13, calls/sec = 8122.35
ttcp-r: 0.0user 1.3sys 0:10real 13% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11497.35 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.19
ttcp-t: 0.0user 0.8sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11488.09 KB/sec +++
ttcp-r: 86214 I/O calls, msec/call = 0.13, calls/sec = 8124.31
ttcp-r: 0.0user 1.2sys 0:10real 12% 0i+0d 0maxrss 0+1pf 0+0csw



Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11496.64 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.10
ttcp-t: 0.0user 0.8sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11487.90 KB/sec +++
ttcp-r: 86213 I/O calls, msec/call = 0.13, calls/sec = 8124.08
ttcp-r: 0.0user 1.3sys 0:10real 13% 0i+0d 0maxrss 0+1pf 0+0csw





From the above experiments on experiment 2, we achieve a full throughput
on routed connection. 11500KB/sec. This is what we expect.

We can conclude that:

If 3Com card is not significantly faster than Tulip chip
( NOTE: with Tulip driver directly compiled to kernel 2.4.10. the order
of eth? is changed. eth0:tulip1     eth1:tulip2     eth2:3Com )
with NIC driver directly compiled in kernel, the routing speed improves
significantly (about 2:1)

To remove the possibility that the improvement of routing speed is caused 3Com
card, we configure the NIC card so that the NIC cards involved in routing are
2 tulip chips.

Do the experiments of experiment 2 again:

experiment 2

[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11530.66 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.33
ttcp-t: 0.0user 0.0sys 0:01real 0% 0i+0d 0maxrss 0+2pf 0+0csw

[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11474.57 KB/sec +++
ttcp-r: 11590 I/O calls, msec/call = 0.13, calls/sec = 8117.08
ttcp-r: 0.0user 0.1sys 0:01real 12% 0i+0d 0maxrss 0+1pf 0+0csw


experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11531.83 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.48
ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11478.03 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8118.13
ttcp-r: 0.0user 0.1sys 0:01real 9% 0i+0d 0maxrss 0+1pf 0+0csw



Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11528.91 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.11
ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw

[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11481.41 KB/sec +++
ttcp-r: 11588 I/O calls, msec/call = 0.13, calls/sec = 8120.52
ttcp-r: 0.0user 0.1sys 0:01real 10% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t -s 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 1.42 real seconds = 11535.87 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.71, calls/sec = 1441.98
ttcp-t: 0.0user 0.0sys 0:01real 4% 0i+0d 0maxrss 0+2pf 0+0csw

[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 16777216 bytes in 1.43 real seconds = 11480.12 KB/sec +++
ttcp-r: 11587 I/O calls, msec/call = 0.13, calls/sec = 8118.90
ttcp-r: 0.0user 0.1sys 0:01real 7% 0i+0d 0maxrss 0+1pf 0+0csw



Experiment 2

USING very large amount of traffic: 124MB


experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.61 real seconds = 11494.03 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1436.78
ttcp-t: 0.0user 0.8sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11487.71 KB/sec +++
ttcp-r: 86212 I/O calls, msec/call = 0.13, calls/sec = 8123.85
ttcp-r: 0.0user 1.3sys 0:10real 13% 0i+0d 0maxrss 0+1pf 0+0csw


Experiment 2

[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11495.83 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.00
ttcp-t: 0.0user 0.9sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11488.64 KB/sec +++
ttcp-r: 86204 I/O calls, msec/call = 0.13, calls/sec = 8123.75
ttcp-r: 0.0user 1.2sys 0:10real 12% 0i+0d 0maxrss 0+2pf 0+0csw



Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11497.26 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.18
ttcp-t: 0.0user 0.8sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11488.69 KB/sec +++
ttcp-r: 86206 I/O calls, msec/call = 0.13, calls/sec = 8123.97
ttcp-r: 0.0user 1.3sys 0:10real 13% 0i+0d 0maxrss 0+2pf 0+0csw


Experiment 2


[lin@madrid lin]$ ttcp/ttcp -t 192.168.2.2 < linux-2.4.10.tar
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.2.2
ttcp-t: socket
ttcp-t: connect
ttcp-t: 124835840 bytes in 10.60 real seconds = 11495.93 KB/sec +++
ttcp-t: 15239 I/O calls, msec/call = 0.71, calls/sec = 1437.01
ttcp-t: 0.0user 0.9sys 0:10real 8% 0i+0d 0maxrss 0+2pf 0+0csw


[lin@prague ttcp]$ ttcp -r -s
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp
ttcp-r: socket
ttcp-r: accept from 192.168.1.2
ttcp-r: 124835840 bytes in 10.61 real seconds = 11488.18 KB/sec +++
ttcp-r: 86212 I/O calls, msec/call = 0.13, calls/sec = 8124.18
ttcp-r: 0.0user 1.2sys 0:10real 11% 0i+0d 0maxrss 0+1pf 0+0csw



From the above experiments we do see that the speed is still about 11500KB/sec

So the improvement is not significantly because of NIC speed difference between
3Com card and tulip chips

So, we can draw the conclusion:

With NIC card driver directly compiled into kernel, the routing speed improve
a lot, compared the case that NIC card driver compiled and loaded as module.