WinSCP mega-slowness

Martin Hepworth maxsec at gmail.com
Mon Feb 20 11:16:28 PST 2006


Hate to do a me too, but I gotta agree.

I did the same file transfer using cygwin's scp and winscp and cygwin was
about 10x faster.....


On 2/20/06, Xn Nooby <xnooby at gmail.com> wrote:
>
> For about a year I have noticed that whenever my Windows boxes talk to my
> Unix boxes, they communicate at about 1/10 normal speed. I copy lots
> (300GB)
> of large files back and forth between machines as I try different OS's,
> and
> I always see this.
>
> Specifically, if I copy from FreeBSD to FreeBSD, files transfer at 11 megs
> per second.  Between FreeBSD and Linux, at about 8 megs per
> second.  Between
> FreeBSD and Windows, about 1 megabyte per second.  This is on identical
> hardware.  I've told other people about this, and they usually say I must
> be
> doing something wrong, but recently a friend of mine upgraded a Windows
> box
> to SP2, and now they are getting this same slowness.  When I copy from
> Windows to WIndows (XP or W2k), I get 11 megs per second.
>
> My machines are two P4's with gigabit NICs, and I'm using WinSCP and
> (somtimes) pscp.exe on WIndows to talk to sshd on FreeBSD.  It's always a
> shock when I have to copy my data to WIndows, and it takes 30 hours
> instead
> of 3.
>
> Does anyone else ever see this slowness when copying files between FreeBSD
> and Windows?
>
> Is Windows maybe capping the transfer speed when it talks to Unix?
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