Date: Sun, 6 Apr 2003 18:51:31 -0400 (EDT) From: Andre Guibert de Bruet <andy@siliconlandmark.com> To: current@freebsd.org Subject: usb scheduling overruns under system load Message-ID: <20030406172853.X92580@alpha.siliconlandmark.com>
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Hi,
I've just installed -current on another one of my machines and have been
seeing "usb0: 1 scheduling overruns" messages printed to the console over
and over under load. As the load increases, so does the frequency of the
messages. After a bit of experimenting, I've found that large amounts of
network traffic (I used ftp) and bzip2'ing a large dump cause the message
to be printed roughly ten times a second.
This computer had been running -stable for a few months prior and did not
exhibit this behavior. It's a dual Athlon MP 2000+ running on an Asus
A7M-266D with an onboard AMD-brand OHCI USB controller. The only USB
devices that are connected are a Microsoft Internet Keyboard Pro and an
IntelliMouse Optical (1.0A). Unplugging both devices doesn't fix the
problem.
pciconf -lv thinks the following of the controller:
ohci0@pci2:0:0: class=3D0x0c0310 card=3D0x80441043 chip=3D0x74491022 rev=3D=
0x07 hdr=3D0x00
vendor =3D 'Advanced Micro Devices (AMD)'
device =3D 'AMD-768 USB Controller'
class =3D serial bus
subclass =3D USB
usbdevs shows:
addr 1: OHCI root hub, AMD
addr 2: product 0x001c, Microsoft
addr 3: Microsoft IntelliMouse=AE Optical, Microsoft
The kernel config file and dmesg can be found at:
http://siliconlandmark.com/staff/andre/files/BLING
http://siliconlandmark.com/staff/andre/files/BLING.dmesg
uname -a:
FreeBSD bling.properkernel.com 5.0-CURRENT FreeBSD 5.0-CURRENT #1: Sun Apr =
6 16:47:32 EDT 2003 root@bling.properkernel.com:/usr/src/sys/i386/comp=
ile/BLING i386
Any ideas?
Regards,
> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/ >
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