Date: Sun, 19 Jan 2003 18:31:01 -0500 From: "Matt Haught" <haughtlists@hotmail.com> To: <freebsd-current@freebsd.org> Subject: new wi0 slowness Message-ID: <OE15xdJXNMZaxSFoH6o0001009e@hotmail.com>
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I have noticed the following with the new wi0. I have the 802.11 connection
between my laptop running XP and my current box running as a hostap. I also
have a IPSec tunnel between the current box and the laptop, but I don't
think this could be causing the problems.
While transferring files from samba on the current box to the laptop I got
the following results:
With the old wi0:
average 5120.3Kb/s
peak 7326.5Kb/s
With top -S
85% interrupt
cpu - 58% swi1: net
21.8% irq10: wi0
With the new wi0:
average 877.0Kb/s
peak 902.4Kb/s
With top -S
11.6% interrupt
cpu - 9% swi1: net
0.88% irq10: wi0
I am also getting hundreds of: "wi0: tx failed, retry limit exceeded" with
the new driver under heavy load. In addition it get many random disconnects
which I would not notice, except AIM gets logged out. I don't think it has
anything to do with the ipsec tunnel as the SAD entries are still there and
it only happen with the new wi kernel. I have tried FAST_IPSEC and it does
work with the new wi0 driver where it would temporarily lock up the machine
with the old one, but I'm not using it since I thought it may be causing a
problem and its ends up that it did not make a difference. I am going to
try it later without IPSec just to be sure.
Under the new driver my card which sold as a D-link DWL-520 2.4GHz Wireless
PCI card is shown as a:
dmesg ....
wi0: <Intersil Prism2.5> mem 0xe6000000-0xe6000fff irq 10 at device 15.0 on
pci0
wi0: 802.11 address: 00:05:5d:fa:0e:b0
wi0: using RF:PRISM2.5 MAC:ISL3874A(Mini-PCI)
wi0: Intersil Firmware: Primary (1.0.7), Station (1.3.6)
wi0: supported rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
....
I can change the media through ifconfig to DS/11Mbps or whatever, but it
does not seem to change anything other then ifconfig will show "media: IEEE
802.11 Wireless Ethernet DS/11Mbps <hostap> (DS/2Mbps <hostap>)" rather then
autoselect. The same slowness is still there. wicontrol shows it as having
a TX rate (actual speed) of 2 no matter what. I can set the (selection) to
anything such as 11, and again no change in the throughput or anything. I
have also changed things with the old driver, and nothing changed with the
throughput, and it also shows the (actual speed) as 2 but I get higher
throughput. It seems to kinda have a mind of its own. Well if you need
anymore info, just drop me a message. I enabled debugging for wi0 as a
earlier post showed, but I had no idea what I was looking at :).
--Matt
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