Re: 70% CPU Usage Due to Hardware Interrupt Conflicts
- From: "Bert Kinney" <bert@xxxxxxxxxx>
- Date: Thu, 28 Jul 2005 20:10:56 -0400
Hi,
I would suggest looking for updated usb drivers from Dell.
http://support.dell.com/support/downloads/index.aspx?c=us&cs=19&l=en&s=dhs
--
Regards,
Bert Kinney MS-MVP Shell/User
http://bertk.mvps.org
TZar wrote:
> The short version:
> My Dell Dimension 8250 with an "as shipped" configuration
> has a Hardware Interrupt issue which constantly keeps the
> CPU 70% utilized (as measured by Windows Task Manager)
> even with no applications/processes actively utilizing
> the CPU (also as measured by Windows Task Manager).
> Device Manager shows no apparent hardware conflicts, but
> a process management tool (Process Manager by
> Sysinternals) shows that the 70% background CPU
> utilization is caused by Hardware Interrupts. The
> details on my devices and associated IRQs are listed
> further down in this post. Can anyone advise as to how
> to resolve the interrupt issue and free up the CPU?
>
> The Long Version:
> For several weeks, I've been trying to debug an issue
> with very slow system performance and constant high CPU
> usage. I have tried everything from multiple anti-virus
> tools, multiple anti-adware tools, system restore, using
> alternate hardware profiles to temporarily disable
> potentially conflicting devices, MSconfig to temporarily
> turn off non-essential services and applications, XP
> recovery console, the MS User Profile Hive clean-up tool,
> Dell Diagnostics, clearing NVRAM, XP repair install, and
> eventually a full XP re-install. Nothing has corrected
> the problem. Prior to the re-install, I was on Service
> Pack 2 and was fully up to date with any XP updates.
>
> With this problem, Windows Task Manager shows conflicting
> results. The overall CPU usage is always over 70% (as
> reflected in the lower status bar, in the "Performance"
> tab, and in the system tray icon of Task Manager),
> however the at the same time Task Manager "Processes" tab
> shows that the system is 99% idle (System Idle Process
> for the CPU is 99%, with no other processes showing any
> CPU usage over 1%).
>
> In addition to the CPU utilization issue, before the XP
> reinstall, I also had a "blue screen"
> Driver_IRQL_Not_Less_or_Equal stop error.
>
> I recently found a tool (Process Manager by Sysinternals)
> which is similar to Windows Task Manager, which
> identifies the hidden CPU usage. It identifies that the
> 70% CPU usage is being consumed by Hardware Interrupts.
>
> To simplify the debugging, for the XP re-install, I
> disconnected any peripherals (e.g. printer, DSL Modem,
> wireless router) that did not come with the original
> configuration. I also disconnected the Dazzle Mojave
> device, but left the associated card in the slot. These
> were part of a standard Dell "Movie Studio Premium"
> package.
>
> After the re-install, although several devices share the
> same IRQs, Device Manager shows no apparent hardware
> conflicts (other than a missing driver for the Multimedia
> controller resulting from having the Dazzle Mojave device
> unplugged).
>
> I have a Dell Dimension 8250 with the following PCI
> devices which could be causing the Hardware Interrupt
> conflict:
>
> IRQ 10:
> - Multimedia Controller (supporting the Mojave Dazzle
> Device which came with the Dell "Movie Studio Premium"
> package)
>
> IRQ 11:
> - Intel 82801BA/BAM SMBus Controller 2443
>
> IRQ 16:
> - 64MB DDR NVidia GeForce4 MX 420 w/ TV Out (Dell)
> - VIA USB 2.0 Enhanced Host Controller
>
> IRQ 17:
> - Conexant HSF v.92 56 RTAD Speakerphone PCI Modem
> - VIA Rev5 or later USB Universal Host Controller
>
> IRQ 18:
> - Intel Pro/100M Network Connection
> - Santa Cruz (Voyetra Turtle Beach sound card)
> - VIA Rev5 or later USB Universal Host Controller
> - VIA Rev5 or later USB Universal Host Controller
>
> IRQ 19:
> - Texas Instruments OHCI Compliant IEEE 1394 Host
> Controller (also supporting the Mojave Dazzle Device
> which came with the "Movie Studio Premium" package)
> - VIA Rev5 or later USB Universal Host Controller
> - VIA USB 2.0 Enhanced Host Controller
>
> The entire configuration that I am working with for the
> debugging is "as shipped" originally. The only exception
> is that I unplugged the external Dazzle Mojave device
> when doing the XP re-install, and tried to add it in
> later. After the re-install, with the Dazzle Mojave
> device disconnected, I got rid of the
> Driver_IRQL_Not_Less_or_Equal stop error, but I still had
> the CPU utilization issue. When I reconnected the Dazzle
> Mojave device, I get a Driver_IRQL_Not_Less_or_Equal stop
> error back. I also used the latest driver for this
> device from the Dell website for the Movie Studio
> package.
>
> I've used alternate hardware profiles to selectively
> disable potentially offending devices through Device
> Manager,. The only thing that stops the CPU consumption
> is systematically disabling the USB Root Hubs first, and
> then disabling the USB controllers. That stops the CPU
> consumption; however it renders my USB ports inoperable,
> and upon re-boot the system hangs.
>
> One final note: my BIOS is upgraded to the most recent
> version. BIOS setup shows different IRQs for the PCI
> devices than the IRQs shown in Device Manager.
>
> My gut tells me that the problem is with the components
> of the Dell "Movie Studio Premium" package. I've
> systematically disabled, via Device Manager, all the
> components associated with it but I still have the CPU
> utilization issue. I will probably try to uninstall them
> via Device Manager and/or try removing the card from the
> slot next to see if that resolves it.
>
> Before taking this final step, any recommendations or
> advice would be greatly appreciated. This debugging
> process has been an excellent learning tool for me to
> find obscure techniques in an attempt to resolve it, but
> I'm ready for it to be over!!
>
> Any help would be greatly appreciated!
>
> Thanks!
.
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