Re: SCP VS rsync+ssh

From: Dave Hall <dave-slg_at_no.spam.please>
Date: Mon Jun 30 2008 - 15:57:18 CST

On Mon, Jun 30, 2008 at 03:27:02PM -0600, rob wrote:
> >From the stuff I had done moving 40->60gb pcap files scp seemed to fault
> and leave me hanging whereas rsynch via ssh didn't fail and if it does
> it picks up where it left off next time. Just wondering if there is some
> interaction with the IP stack thats different

Ah, yeah, that's a lot of data. I think I have an idea what's likely
happening.

The disc on the target probably can't write data as fast as data can
come over the network. rsync is probably more intellegent about
buffering compared to scp which is basically cp over SSH. If you watch
the kernel's buffer size, it will probably max out just before the
transfer dies.
Received on Mon Jun 30 15:57:20 2008

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