isp(4) timeout

Marcel Moolenaar marcel at
Thu Jun 30 17:23:02 UTC 2011

On Jun 30, 2011, at 3:25 AM, Anton Shterenlikht wrote:

> I see in my logs:
> isp0: Polled Mailbox Command (0x54) Timeout (500000us) (started @ isp_plogx:2122)
> isp0: Mailbox Command 'EXECUTE IOCB A64' failed (TIMEOUT)

This is most likely caused by a loss of interrupt
handling. Be it masked interrupts or the inability
to have the interrupt thread running.

I have some important improvements in the pipeline
that significantly improve stability. I'm doing a
final test and then I'll commit. It may address the
issue as a side-effect.


Marcel Moolenaar
marcel at

More information about the freebsd-current mailing list