On Tue, 25 Jan 2011 07:58:28 +0100 Jochen Schulz <m...@well-adjusted.de> wrote:
> Celejar: > > On Mon, 24 Jan 2011 22:33:28 +0100 > > Jochen Schulz <m...@well-adjusted.de> wrote: > > > >> Celejar: > >>> > >>> I understand that you're technically adding traffic and processor > >>> overhead; the question is how much? > >> > >> My 1.66GHz atom D510 can encrypt/decrypt AES with ~20MByte/s on a single > >> core. Typically, my wifi reaches only 10% of that throughput. > >> Additionally, encryption is usually done by the network adapter in > >> hardware, as far as I know. The host CPU shouldn't be stressed by that. > > > > Thanks. What's the CPU usage like while doing AES on 20Mb? > > A single core get's used 100% by the kworker thread. But actually it's > not 20MB/s, but 25MB/s while reading (decrypting) and 35MB/s while > writing (encrypting). I just tested it again. So does that mean that your wireless throughput with encryption enabled is CPU-bound, and that you'd be getting better throughput with a more powerful CPU (or without encryption)? Celejar -- foffl.sourceforge.net - Feeds OFFLine, an offline RSS/Atom aggregator mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110125145546.05cca16f.cele...@gmail.com
