lkml.org 
[lkml]   [2007]   [Jun]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH] IO-APIC blacklist


On Sat, 2 Jun 2007, Tear wrote:
>
> I own a Dell OptiPlex GX240 which, when ACPI is disabled
> but IO-APIC is enabled, shows very slow USB performance.
> I thought that this could be related to IO-APIC and
> tried to boot with "noapic" appended to the kernel
> command line. This way the USB transfer speed returned
> to normal values.

Well, it's almost certainly not the IO-APIC per se.

It's more likely to be some irq routing issue, where ACPI fixes up
something. Do you have diffs of 'dmesg' with and without ACPI?

Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-06-02 18:43    [W:0.112 / U:0.600 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site