On Mon, Oct 29, 2012 at 05:51:37PM -0400, Justin Piszcz wrote:
>
> > What happened afterwards?
> It did eventually complete.
>
> > How much memory do you have in your system?
> 32GB memory/32GB swap
> > Did the system continue, and did the sync command (I presume you ran
> > "sync" from the command line?) finally return to the command prompt?
> In this case I did not run sync, I waited for the processes/dump/etc
> to complete.
OK, well *some* process must have issued a sync system call, since
that was what triggered the soft lockup. If half your memory was
dirtied, then the time it might take to write back 16 gigs would
roughly:
(16 GB * 1024 MB/G) / 100 MB/s = 163 seconds
... which would be enough to trigger the soft lockup error.
- Ted
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