On Wed, Jul 31, 2013 at 04:02:29PM -0400, Mike Audia wrote:
> I believe 30 sec is the default for the checkpoint interval.  Is this 
> adjustable?

It doesn't look like it.  It looks like it's implemented with raw '30's
in the code.

                delay = HZ * 30;
...
                    (now < cur->start_time || now - cur->start_time <
30)) {

If you want more frequent forced commits you could always syncfs()
regularly from userspace, I suppose.

- z
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