[clug] Advice needed: monitoring my ISP's speed

[Simon Cousins]

Hi Cluggers,

I'm sitting behind a corporate Ethernet net feed in Beijing that varies from
100+Kb/sec to 0Kb/sec all day every day.  I suspect the building owners are
not buying enough feed to satisfy all the building's tenants.

I have a Linux host co-located in a local kickass Beijing datacenter, so I
figure I have the hardware necessary to monitor an end-to-end speed test for
a week.  

I'm unsure of the best way to proceed with setting up a test though.  I
recall a handy Linux app that graphed a wide range of performance
characteristics on Ethernet and router ports a few years ago, but the name
escapes me.  I've googled for advice, but amongst the detritus of vendors
hawking internet 'acceleration' and USA-based host testing, I've been
unsuccessful in getting CLUG-quality advice.

Any suggestions gratefully received.  I need hard evidence to force the
landlord to take my complaints seriously (building complex Zope portals
ain't much fun behind 4Kb/sec...)

/src