Re: SCP file transfer speed

[mlelstv%serpens.de@localhost (Michael van Elst)]

stephanwib%googlemail.com@localhost (Stephan) writes:

>When I copy large files through scp to a NetBSD box, I get transfer
>speeds of only 7 MB/s on a 100 MBit connection. This should be around
>11 MB/s. I´ve seen this on different x86/amd64 hardware with NetBSD 5,
>6 and 7-BETA. The NICs are largely wm, fxp and bnx.

scp speed most often is limited by the CPU doing the encoding (or worse:
compression).

You could try something like:

scp -oCiphers=arcfour ....

On a modern computer that's more than 4 times as fast as the default
AES cipher. If you don't trust arcfour, maybe blowfish-cbc is good
enough for you and still about 3 times as fast.


-- 
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."