nanog mailing list archives
Re: Traceroute versus other performance measurement
From: Joel Jaeggli <joelja () darkwing uoregon edu>
Date: Wed, 29 Nov 2000 10:47:31 -0800 (PST)
On Wed, 29 Nov 2000, Daniel Senie wrote: <SNIP>
All the theory sounds great. Now, you've got a customer using the utility to test a circuit between two boxes, and calls to complain that he's only seeing 1/2 of the expected bandwidth, because Pathchar tells him he's getting X, and we said we provisioned 2X. Perhaps it's just a customer education issue.
At the expense of using all their bandwidth ttcp should provide some reasonable measure of performance under those circumstances.
I think you're making assumptions about how load is shared on parallel links. Often this is done by hashing the IP address or mac address of the packets as a way to ensure there will be no packet reordering issues on the parallel links. You can send traffic until you clog one of the two pipes, but will never cause spill to the other link.
-- -------------------------------------------------------------------------- Joel Jaeggli joelja () darkwing uoregon edu Academic User Services consult () gladstone uoregon edu PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E -------------------------------------------------------------------------- It is clear that the arm of criticism cannot replace the criticism of arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of the right, 1843.
Current thread:
- Re: Traceroute versus other performance measurement, (continued)
- Re: Traceroute versus other performance measurement grisha (Nov 29)
- Re: Traceroute versus other performance measurement Daniel Senie (Nov 29)
- Re: Traceroute versus other performance measurement Bruce A. Mah (Nov 29)
- Re: Traceroute versus other performance measurement Valdis . Kletnieks (Nov 29)
- Re: Traceroute versus other performance measurement Quark Physics (Nov 29)
- Re: Traceroute versus other performance measurement Andrew Brown (Nov 29)
- RE: Traceroute versus other performance measurement Mark Borchers (Nov 29)
- Re: Traceroute versus other performance measurement Marshall Eubanks (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement Daniel Senie (Nov 29)
- Re: Traceroute versus other performance measurement Joel Jaeggli (Nov 29)
- Re: Traceroute versus other performance measurement Daniel Senie (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement David Charlap (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement Kai Schlichting (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement smd (Nov 29)
- Re: Traceroute versus other performance measurement Alan Hannan (Nov 30)