Re: [RFC] mac80211: soft scan vs latency

[Stanislaw Gruszka <sgruszka@redhat.com>]

On Mon, Jan 14, 2013 at 03:55:58PM +0100, Stanislaw Gruszka wrote:
> Except latency, patch perhaps also improve throughput, since we spend
> more time on-channel while scanning. But I'm not quite sure, since
> overall scanning time is bigger. I did not test influence of the patch
> on throughput.
> 
> I tested patch by doing:
> 
> while true; do iw dev wlan0 scan; sleep 3; done > /dev/null

I can see slight throughput improvement with patch, measured by scp:

Upload to periodical scanning machine:
scp -B Fedora-18-Beta-i686-Live-Desktop.iso stasiu@192.168.1.105:~/

Unpatched: 3.9MB/s   03:15    
Patched:   4.3MB/s   02:58

Download from periodical scanning machine:
scp -B stasiu@192.168.1.105:~/Fedora-18-Beta-i686-Live-Desktop.iso .

Unpatched: 5.5MB/s   02:17
Patched:   6.2MB/s   02:02

Stanislaw