USB Drive Controller Failure and Shared IRQ

Matthew Carpenter matt
Fri Feb 18 19:45:14 PST 2005


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This may be.  I would imagine that copying from the SATA controller to
the USB controller for backup would be rather intensive (I know it is).

I'm not sure what the solution for that is.  Perhaps relocating the PCI
cards would shake this up a bit.  The Mobo doesn't have anything I can
see offhand.

Michael Hipp wrote:
| Matthew Carpenter wrote:
|
|> I thought it must be the USB controller built into the board.  So I
|> bought another one and plugged 'er in.  Same results.  I just ordered a
|> replacement Mobo and this morning I notice that IRQ 10 is being shared
|> by (this information came from the BIOS boot-screen, not Linux):
|> *) The USB controller on the Mobo
|> *) The new USB controller (PCI)
|> *) The SATA RAID Controller.
|>
|> Could this be causing my issues?  I would think that issues caused by
|> shared-IRQ would occur next to immediately, and have far worse effects.
|
|
| Back when I was being tortured every day by satellite Internet, my sat
| modems connected via USB. It was well known to cause problems if the USB
| ports were sharing IRQs with anything else. It was blamed on the fact
| that the sat modems could pump quite a stream of data thereby generating
| lots of interrupts and presumably the hardware/software just couldn't
| deal with it.
|
| I'd say it's certainly a possibility.
|
| Michael
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|
|
|

- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

Enterprise Information Systems
* Network Server Appliances
* Security Consulting, Incident Handling & Forensics
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