Date: Sun, 19 Jan 2003 19:46:11 -0800 From: "Sam Leffler" <sam@errno.com> To: "Matt Haught" <haughtlists@hotmail.com>, <freebsd-current@FreeBSD.ORG> Subject: Re: new wi0 slowness Message-ID: <308001c2c036$79773e20$5a557f42@errno.com> References: <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. > Ignore IPsec; in fact don't configure it. I just changed the default setting of kern.wi_txerate to 0 to suppress printing tx error messages; do likewise: sysctl kern.wi_txerate=0 This is the way the old driver worked. > 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 :). > You've said nothing about how your interface is configured except that it's running in hostap mode; start by giving the output of ifconfig wi0. The output of netstat -i might indicate the error rate on your Dlink card (tx errors show up as output errors). Finally, you may want to try different station firmware in your Dlink card. I run 1.4.9 in my Senao (Prism 2.5) cards with good success. I don't recall whether there were issues with 1.3.6 (I know some of the intermediate versions had problems especially in hostap mode). You can get 1.4.9 firmware at http://www.netgate.com/support/prism_firmware/. Sam To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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