[nzlug] Slow uploads to Trademe

[Nick Rout]

On Tue, 08 Aug 2006 12:11:11 +1200
Joel van Velden <joel at tpnz.co.nz> wrote:

> On Tue, 2006-08-08 at 08:30 +1200, Hadley Rich wrote:
> > On Tuesday 08 August 2006 10:12, cr wrote:
> > > mtu 512 is the answer in my
> > > case).
> > 
> > Wow, that's small.
> 
> You could take the scientific approach of changing the MTU between 512
> and 1500 (say in increments of 100) and timing how long it takes to send
> an email with an attachment to yourself or something similar.
> 
> My guess is you've got a bad phone line and noise on the line is killing
> off packets. the larger your MTU the more data is in a packet and more
> data has to be resent if a packet gets killed.
> 
> There's nothing wrong with a small MTU, all it will do is reduce a
> little efficiency when downloading at 56k. It may even increase your
> ping times if you're lucky.
> 
> Cheers,
> Joel van Velden

How about just sending pings to the offending server with increasing packet sizes until it fails.