Re: 2.6.24-rc3-git3: usb hardware interrupts using 25% of CPU time
[email protected] (Tony Breeds)
| Newsgroups | gmane.linux.usb.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Wed, Nov 28, 2007 at 10:33:18PM +0000, Frederik Himpe wrote: > I installed Linux 2.6.24-rc3-git3 on a PPC based Apple Powerbook G4 > system. Now with top I see that over 20% of CPU time is used by hardware > interrupts. Looking at /proc/interrupts, the number in the row > ohci_hcd:usb1 is rising very quickly: Hi Frederik, Thanks for the report. We suspect that this is an accounting problem introduced when powerpc enabled NO_HZ and highres timers. Fortunatley from the testing we've done it doens't actually look like the time is being spent in hardware interupts, just accounted for there. Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! ------------------------------------------------------------------------- SF.Net email is sponsored by: The Future of Linux Business White Paper from Novell. From the desktop to the data center, Linux is going mainstream. Let it simplify your IT future. http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4 _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel