Re: how to set network io priority for a process?
On Wed, Aug 01, 2007 at 01:03:52PM -0300, Henrique de Moraes Holschuh wrote:
> On Wed, 01 Aug 2007, Douglas Allan Tutty wrote:
> > But not rsync, which I use whenever I can for large downloads due to
> > errors creeping in for some reason over my noisy phone line and freqent
> > line drops (and susequent redials by pppd).
>
> Why do you allow for damaged packets at all?
>
> I used analog async ITU-T V42 modems for a *long* time (fortunately, I was
> able to move away before V9x hit the market). You really want an error-free
> channel without compression for regular Internet over PPP domestic use, and
> any modem still on the market should be able to deliver that to you just
> fine. Just configure it for error correction without compression, and have
> a proper error-free short and well-shielded serial connection to it if it is
> an external modem.
>
Its an external 3Com Courier modem, that's not the problem. I don't
know _where_ the errors happen, but the more times the download is
interrupted the more frequently there are issues somewhere in the iso.
Not a problem if I can find an rsync server with the file, but a royal
pain with plain ftp. I _once_ had to download three defective copies of
an ISO (took a couple of weeks) and use that gnu tool that creates a
single good file out of three bad ones.
It has never been a problem when downloading packages via aptitude, even
if I have to interrupt it. However, under sarge, I found that gftp
would die out and not resume properly, corrupting the file, and that
sometimes wget will also corrupt the file.
For all I know, the errors are happening upstream of my ISP's modem.
I'm using porchlight which gives me unlimited for 9.99 per month. This
never happened when I lived outside of Parry Sound, farther away from
the telephone exchange, but paid $24.95 per month.
Doug.
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