Hejsan Per,
> --- spec ---
> SSH2.0.13 -- Solaris 2.7 -- SPARC 220R -- Extreme24 (switch)
>
> Hi,
>
> I Sent a 50MB file (from host a to host b) with scp and got ~185kb/s
> over a 100Mbit switched full duplex LAN.
>
> Is that good or bad?
Very bad indeed!
SSH2 uses the Triple-DES cipher by default, if I'm not entirely mistaken.
Try "scp -c blowfish ..."
If you get ~1000 kB/s on ftp on a 100 Mbit switched LAN, that's bad too
and you should look into the causes of your networking problems.
In a similar setup, I would see maybe ~5-6 MB on unencrypted local
traffic (on hosts on the same LAN).
I tested scp'ing the Linux kernel (24 MB gzipped) to localhost on our
E220R (450 MHz CPU). It encrypted the package using 3DES on SSH1 at
less than 1000 kB/s, using IDEA at 1700 kB/s, and Blowfish at close
to 4000 kB/s. Doesn't explain why you only got <200 kB/s, however.
Then again, I have very little experience on SSH2.
> Compression doesn't help.
That's normal. If you've read my recent postings on the list, you have
repeatedly heard that compression is an extra burden on the CPU that
can only help on really slow lines.
mvh,
--
Atro Tossavainen (Mr.) / The Institute of Biotechnology at
Systems Analyst, Techno-Amish & / the University of Helsinki, Finland,
+358-9-19158939 UNIX Dinosaur / employs me, but my opinions are my own.
< URL : http : / / www . iki . fi / atro . tossavainen / >
