Re: 2.6.21-rt9 - IRQ23 consuming a steady 2.7% of CPU

From: Mark Knecht
Date: Sun Jun 10 2007 - 13:38:18 EST

On 6/10/07, Ingo Molnar <mingo@xxxxxxx> wrote:

* Mark Knecht <markknecht@xxxxxxxxx> wrote:

> 23: 1739277 IO-APIC-fasteoi ohci_hcd:usb2, eth0

> 00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)

ok, that's forcedeth. Does that behavior go away if you revert the
change below, via patch -p0 -R ?

but in general, -rt will track IRQ cpu usage accurately, while mainline
does not measure it at all when in idle. So a frequent IRQ on mainline
might be using up similar amounts of of CPU time as well, but it's not


GMail is being kranky. Can you please send the patch as a zipped attachment?

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