On Fri, Jul 22, 2005 at 09:12:05AM -0400, Robert K Coffman Jr - Info From Data 
Corporation wrote:
> >I don't think that the crypto stuff is _that_ hard on the CPU.
> 
> My slowest LEAF machine is P75 and I notice no difference when backing up
> packages over SCP between that and other more capable machines.  Of course
> that is over a broadband (cable) connection, I'm sure I could measure a
> difference if I were on a LAN.

My experience with copying (image) files with scp indicate that these
speeds might be normal:

I had bering and bering-uclibc running on a pentium 133 PC. I also
regularly copied images of 2 1680KB floppy disks to another computer
over 100Mbit lan and I recall (not sure) speeds of about 400
KB/s. This is a bit faster than the earlier mentioned 64MB in 5 min ~=
220 KB/s.

I now have bering-uclibc running on a pentium2 266 and get speeds of
500-600 KB/s. This relatively small increase might also be due to the
fact that the dropbear ssh server is optimized for size and not for
speed. Copied from the dropbear option.h configuration:

/* Set this if you want to use the DROPBEAR_SMALL_CODE option. This can save
several kB in binary size, however will make the symmetrical ciphers (AES, DES
etc) slower (perhaps by 50%). Recommended for most small systems. */
#define DROPBEAR_SMALL_CODE

Jaap


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