[openib-general] Disabling IRQ #201 message

[Robert Pearson]

I'm debugging some code that is reading files in /sys/class/infiniband/.
Other than that the HCA isn't doing anything at all. The dropped
interrupt occurs whether or not I am doing anything. I can reboot the
machine and just let it sit there and the message will occur after a
while. After the message, files which require interacting with the HCA
e.g. /sys/class/infiniband/mthca0/ports/1/state become unreadable. Read
calls block for a long time and finally timeout with an EOF indication.

> -----Original Message-----
> From: Roland Dreier [mailto:roland at topspin.com]
> Sent: Tuesday, February 01, 2005 6:31 PM
> To: Robert Pearson
> Cc: openib-general at openib.org
> Subject: Re: [openib-general] Disabling IRQ #201 message
> 
>     Robert> Am running current version of openib on a 2.6.11-rc1
>     Robert> kernel on a NewIsis dual Opteron system. Every 15-20
>     Robert> minutes the following occurs. Have others seen this
>     Robert> behavior? Is the system misconfigured?
> 
> Do the drivers work other than this messsage?
> 
> It seems occasionally an interrupt occurs but the driver is not
> finding an events in any of the event queues.  I've never seen this
> but on the other hand I've not done much testing on the
> Opteron/AMD-8131 platform.
> 
>  - R.