Re: Patch available for shared em interrupts (Re: em, bge, network problems survey.)

From: Ade Lovett <ade@xxxxxxxxxxx>
Date: Sun, 8 Oct 2006 23:29:28 -0700

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On Oct 5, 2006, at 19:34 , Kris Kennaway wrote:

Based on successful testing on a machine with shared em interrupt, the
following patch should work around the problem *in that case*.

This solves the em(4) issue for me on a shared interrupt. Prior to this, the network hang (no watchdog timeouts) was trivially reproducible with an NFS-mounted FreeBSD repository to two builder boxes, and running cvs -q upd on the ports tree at the same time. (the builder boxes also have em(4) interfaces, which I haven't patched, but they're running 7.0-CURRENT). Everything is i386.

[root@foo:/dtbox] 739# vmstat -i
...
irq21: em0 acpi0 965426 857
...

- -aDe

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References:
- em, bge, network problems survey.
  - From: Scott Long
- Re: em, bge, network problems survey.
  - From: Kris Kennaway
- Patch available for shared em interrupts (Re: em, bge, network problems survey.)
  - From: Kris Kennaway

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