Date: Thu, 22 Sep 2005 07:13:29 -0400 From: "Peter D. Quilty" <pdquilty@adelphia.net> To: Peter Jeremy <PeterJeremy@optushome.com.au> Cc: freebsd-stable@freebsd.org, freebsd-mobile@freebsd.org Subject: Re: High interrupts w/ Cisco 350 card Message-ID: <1127387609.1092.2.camel@pdq-laptop> In-Reply-To: <20050921080126.GK40237@cirb503493.alcatel.com.au> References: <1127259847.1266.101.camel@pdq-laptop> <20050921080126.GK40237@cirb503493.alcatel.com.au>
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On Wed, 2005-09-21 at 18:01 +1000, Peter Jeremy wrote: > 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? No, the PCI bus is hardcoded to use only irqs 10 & 11. The video card uses 10 and everything else shares 11. > > This Cisco card works fine in every other laptop I have. > > What OS? All are running FreeBSD 5.4-RELEASE. > > 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? No, I haven't. It is my primary laptop and I would prefer not to have to load another OS merely for testing. > >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 > ...
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