At 11:58 PM 7/18/2010, Jeremy Chadwick wrote:
So I believe this indicates the message only gets printed during swapin,
not swapout. Meaning it's happening during an I/O read from da0.
Yes, and from my existing ssh sessions, it would _seem_ no disk IO
was completing. ie I tried a killall -9 watchdogd which would need
to load killall from the disk, read whatever its linked against.
However, after hitting enter it was just blocking on trying to read.
So I would describe it as if the entire system was waiting from that
"swapper Indefinite wait" to finish, or I could not read anything
from drives associated with that controller.
So what's hz? Well, I want to assume it's kern.hz, which defaults to
1000. 1000*20 = 20000, so the timeout would be 20000/1000 = 20 seconds.
That's a pretty long time to be waiting for an I/O read to return.
I think the messages were printing to the serial console faster than
that, but I could be wrong. If it happens again, I will time it
---Mike
--------------------------------------------------------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, m...@sentex.net
Providing Internet since 1994 www.sentex.net
Cambridge, Ontario Canada www.sentex.net/mike
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