On Wed, 14 Mar 2007 14:15:54 -0400 (EDT), Alan Stern <[EMAIL PROTECTED]> wrote:
> I also don't understand why going to HZ=250 should eliminate the errors. > If they are caused by some strange software interaction with the timer > interrupt handler then they should be 4 times less frequent than with > HZ=1000 -- but still present. It's probably BIOS or ACPI. In theory, SMM should be unfazed by whatever OS does, but in practice perhaps our timer programming does something to it. But usually ACPI code is affected the most when HZ is bumped up, because it runs in kernel mode and thus is a subject to kernel changes. It's rare to see ACPI running periodic tasks, but stranger things happened. There's a mode when ACPI interpreter is disabled, and we only use ACPI tables for IRQ routing. I forgot details, sorry. But it may be something to try. -- Pete ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
