[FFmpeg-devel] [PATCH] sftp: support reading config from ~/.ssh/config

Nicolas George george at nsup.org
Wed Mar 11 13:38:27 CET 2015

Le primidi 21 ventôse, an CCXXIII, Reimar Döffinger a écrit :
> Of course, it's just a pointless waste of server CPU time for already
> compressed files.

Possibly not just CPU time, user time too: on my box (rather fast for that
kind of thing), the speed drops from 2500 Mo/s (based on used CPU time,
actual speed 500 Mo/s due to other limits) to 31 Mo/s. You can see the
difference on gigabit ethernet under good circumstances.

On a less powerful CPU (Atom 1.8 GHz), the figures are 4 Mo/s vs. 15 Mo/s. I
know ADSL links where it would make a difference, and it may also make a
difference for remotely reading a high-bitrate Blu-ray.

But still, I do not consider it an issue, as I still think users enabling
compression for SSH (nit: for SSH, not just "interactive SSH", i.e. scp and
SFTP too) should know what they are doing.


  Nicolas George
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