Re: bandwith measurement

[Hervey Allen <hervey at oregon.uoregon.edu>]

At 05:13 PM 7/3/01 +0300, Sematimba Noah K wrote:

> > >> again, use patchar
>
>It happens to come with a strong warning that it is ALPHA and not yet
>ready for use in the README. It also comes with no instructions whatsoever
>about command line arguments to use with it. Simply typing pathchar
>elicits a number of question marks from the program. Any suggestions on
>how it is used?

Not that this is all that meaningful, but here is what output from pathchar 
looks like. This was from a Linux box going from my work (internal net at 
turbolinux.com) to psg.com on Feb. 9th.

- Hervey

***** Output follows *****


[root at hallen util]# ./pathchar psg.com
pathchar to psg.com (147.28.0.62)
  can't find path mtu - using 1500 bytes.
  doing 32 probes at each of 45 sizes (64 to 1500 by 32)
  0 localhost
  |    35 Mb/s,   148 us (641 us)
  1 172.16.4.1 (172.16.4.1)
  |   9.7 Mb/s,   -34 us (1.81 ms),  15% dropped
  2 munch-it.us.tlan (172.23.1.4)
  |    40 Mb/s,   34 us (2.18 ms),  15% dropped
  3 38.170.88.254 (38.170.88.254)
  |   1.4 Mb/s,   777 us (12.3 ms),  15% dropped
  4 192.168.254.2 (192.168.254.2)
  |    48 Mb/s,   64 us (12.6 ms),  15% dropped
  5 fw-gw.turbolinux.com (38.170.88.1)
  |   ?? b/s,   -615 us (8.75 ms),  5% dropped
  6 38.168.88.65 (38.168.88.65)
  |    13 Mb/s,   1.57 ms (12.8 ms),  +q 1.77 ms (2.90 KB) *2,  9%
dropped
  7 ip1.ci2.sanfrancisco.ca.us.psi.net (38.146.152.1)
  |    13 Mb/s,   608 us (15.0 ms),  +q 3.13 ms (4.93 KB) *2,  8% dropped
  8 rc1.nw.us.psi.net (38.1.23.193)
  |   3968 Mb/s,   109 us (15.2 ms),  +q 2.70 ms (1.3 MB),  23% dropped
  9 nw.peering.tier1.us.psi.net (154.13.2.106)
  |    45 Mb/s,   40.4 ms (96.3 ms),  +q 8.88 ms (49.4 KB),  7% dropped
10 204.6.118.198 (204.6.118.198)
  |    27 Mb/s,   -11234 us (74.2 ms),  +q 2.20 ms (7.51 KB),  7% dropped
11 p4-6-0-0.r03.sttlwa01.us.bb.verio.net (129.250.3.90)
  |   ?? b/s,   1.55 ms (77.3 ms),  7% dropped
12 p4-4-0.r02.sttlwa01.us.bb.verio.net (129.250.2.229)
  |    12 Mb/s,   -1173 us (75.9 ms),  +q 1.93 ms (2.80 KB) *2,  6%
dropped
13 et-3-0.o00.sttlwa01.us.bb.verio.net (129.250.31.130)
  |    667 Kb/s,   3.27 ms (100 ms),  3% dropped
14 psg.o00.sttlwa01.us.bb.verio.net (129.250.16.238)
  |   8.7 Mb/s,   -1744 us (98.4 ms),  +q 2.67 ms (2.89 KB) *2,  4%
dropped
15 psg.com (147.28.0.62)
15 hops, rtt 67.4 ms (98.4 ms), bottleneck  667 Kb/s, pipe 8418 bytes


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