Date: Wed, 21 Sep 2005 18:01:26 +1000 From: Peter Jeremy <PeterJeremy@optushome.com.au> To: "Peter D. Quilty" <pdquilty@adelphia.net> Cc: freebsd-stable@freebsd.org, freebsd-mobile@freebsd.org Subject: Re: High interrupts w/ Cisco 350 card Message-ID: <20050921080126.GK40237@cirb503493.alcatel.com.au> In-Reply-To: <1127259847.1266.101.camel@pdq-laptop> References: <1127259847.1266.101.camel@pdq-laptop>
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On Tue, 2005-Sep-20 19:44:07 -0400, Peter D. Quilty wrote: >I'm running 5.4-RELEASE-p6 on a Toshiba Tecra M2 laptop. My network >card is a Cisco 350 PCMCIA card. I'm experiencing a very high rate of >interrupts during heavy network traffic. Not quite. "vmstat -i" reports 173 interrupts/sec. That's not high. "systat -iostat" shows a ludicrously high interrupt load though. I notice that almost all the hardware on your laptop maps to irq 11 - that's undesirable. Can you convince your BIOS to use different interrupt mappings? > This Cisco card works fine in every other laptop I have. What OS? > I suspect it might be a cardbus problem, but I don't >know how to resolve it or troubleshoot it any further. The PCCard bus is fairly atrocious (basically ISA) but isn't that bad. I can get roughly wire speed from a 10baseT NIC without serious CPU strain on a P-233 laptop. Have you tried anything other that FreeBSD 5.4 on your Tecra? >interrupt total rate ... >irq11: cbb0 cbb1+++ 6773905 173 ... > /0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100 >cpu user|XXXXX > nice| > system|X >interrupt|XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX > idle|XXX ... >cbb0: <ToPIC100 PCI-CardBus Bridge> at device 11.0 on pci2 >cardbus0: <CardBus bus> on cbb0 >pccard0: <16-bit PCCard bus> on cbb0 >cbb1: <ToPIC100 PCI-CardBus Bridge> at device 11.1 on pci2 >cardbus1: <CardBus bus> on cbb1 >pccard1: <16-bit PCCard bus> on cbb1 ... >an0: <Cisco Systems 350 Series Wireless LAN Adapter> at port 0xc000-0xc03f irq 11 function 0 config 5 on pccard0 >an0: got RSSI <-> dBM map >an0: supported rates: 1Mbps 2Mbps 5.5Mbps 11Mbps >an0: Ethernet address: 00:07:0e:b9:2e:d5 -- Peter Jeremy
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