<br><br><br><div class="gmail_quote">On Tue, May 24, 2011 at 8:50 AM, John W. Linville <span dir="ltr"><<a href="mailto:linville@tuxdriver.com">linville@tuxdriver.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im">On Tue, May 24, 2011 at 02:46:59PM +0000, Dave Taht wrote:<br>
> yesterday I finally got a chance to move a few dozen meters out of the lab<br>
> and test the latest build of uberwrt "capetown" and debloat-testing.<br>
><br>
> I'd hoped with the debloating techniques in place in capetown - reduced<br>
> buffers (4), reduced sw retries (2), hw retries (2, or so I thought) I'd<br>
> actually see some packet loss.<br>
><br>
> and what I saw instead, was pings that would take as long as 1.6 seconds to<br>
> complete, and zero packet loss until I moved completely out of range of the<br>
> router.<br>
><br>
> I never thought it would be so hard to lose a packet in my life!<br>
><br>
> Is there some system tunable, somewhere, in the linux wireless stack that<br>
> I've missed, in getting packets to actually fail in 10s of ms?<br>
<br>
</div>Not one of which I am aware. That sort of thing is going to depend<br>
quite a bit on the hardware itself, and it's driver. Maybe some<br>
ath9k folk can comment?<br>
<br></blockquote><div><br>I finally got out from under enough to have a chance to look at this problem with debugfs<br>
<br>
root@io:/sys/kernel/debug# cat ./ieee80211/phy0/netdev:wlan2/stations/ce:3d:c7:b0:ae:78/tx_retry_count<br>
291<br>
<br>
My assumption is that this is not the value for retries, but the total number of times a given station has had to retry.<br>
<br>Is there anything useful that I can poke around in down here?<br><br>(I'd actually gone into this to see if I could pull more info out on the ag71xx issue on the other thread)<br><br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
John<br>
<font color="#888888">--<br>
John W. Linville Someday the world will need a hero, and you<br>
<a href="mailto:linville@tuxdriver.com">linville@tuxdriver.com</a> might be all we have. Be ready.<br>
</font></blockquote></div><br><br clear="all"><br>-- <br>Dave Täht<br>SKYPE: davetaht<br>US Tel: 1-239-829-5608<br><a href="http://the-edge.blogspot.com" target="_blank">http://the-edge.blogspot.com</a> <br>