[pve-devel] [PATCH] qemu-server: add support for unsecure migration (setting in datacenter.cfg)

[Stefan Priebe]

Hi,
Am 28.12.2012 13:09, schrieb Dietmar Maurer:
>> This is just memory openssl speed. There i'm getting 600-700MB/s:
>> The 'numbers' are in 1000s of bytes per second processed.
>> type             16 bytes     64 bytes    256 bytes   1024 bytes   8192
>> bytes
>> aes-128-cbc     648664.33k   688924.90k   695855.45k   700784.64k
>> 704027.06k
>>
>> But scp / ssh just boosts from 42MB/s to 76Mb/s.
>
> if we can get 700MB/s there must be a bug somewhere? Maybe you
> can ask on the ssh mailing lists?

i wasn't able to find more information about the speed of ssh influenced 
by aes-ni. I'm not sure that it will result in so much speed. The 
Problem isn't the encryption it is at a specific point the buffer 
handling in ssh. Which uses HARDCODED pretty small buffers.

So the only solution will be a direct tcp connection. No chance to get 
the patches included?

Greets,
Stefan