Re: SCP file transfer speed

[Stephan <stephanwib%googlemail.com@localhost>]

That gives me about 9,3 MB/s in my test, contratry to 8,5 MB/s without
specifying the cipher.

I don´t know, however, what ciphers are used if I don´t specify one.

2015-03-20 7:21 GMT+01:00 Michael van Elst <mlelstv%serpens.de@localhost>:
> 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."