On 30/04/05, K. Shantanu <[EMAIL PROTECTED]> wrote:
> * Binand Sethumadhavan <[EMAIL PROTECTED]> [050430 05:46]:
> > I need to solve the problem of transferring about 250 MB of data
> > across the Atlantic every few minutes.
> 
> I too had a similar problem except the files needed to be transferred every
> few hours I got it solved using rsync and even had wget (which is scriptable)
> doing it. Maybe they can help you out. Even though I use download accelerators
> in Windows I am not too comfortable with them.

Rsync and Wget are not download accelerators. Rsync is a
synchronisation tool, and is really slow for pure file transfers. Wget
does not multithread. For example, I can download a 250 MB file in
30-odd seconds using Axel with 20 threads (and a heavily tuned Apache
at the server side), whereas wget takes about 8 minutes.

I am now inclined to blame NFS now for my problems (my setup downloads
onto an NFS mounted volume). I haven't seen many download corruptions
when I try to download to the local disk. Perhaps it is a bug in the
lseek() implementation on the NFS client (Linux) or server (EMC
Celerra). Trying to figure out which is a big pain, since the
corruption is very random and not at all consistently reproducible :(

Binand


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