Re: How exactly does timeout work?

[Paul Smith <psmith@netezza.com>]

On Mon, 2007-04-09 at 12:44 -0400, Jeff Moyer wrote:
> Jeff> If you set the timeout to 60 seconds, the automount daemon will
> Jeff> wake up approximately every 15 seconds (4 times per timeout, see
> Jeff> CHECK_RATIO in the daemon) and ask the kernel if it is okay to
> Jeff> expire the mount.
> 
> I guess I should further qualify this.  Asking the kernel means
> issuing an ioctl.  The kernel then checks the access time for the
> mount point and, if it is > timeout seconds ago, it will try to expire
> the mount (by calling out to the daemon).

Perfect; that's what I was looking for.  So, CHECK_RATIO is a constant
regardless of the size of the timeout?  So if I make my timeout 10 hours
it will check every 2.5 hours (unless I change the constant in the
daemon code)?

-- 
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 Paul D. Smith <psmith@netezza.com>                       http://netezza.com
 "Please remain calm--I may be mad, but I am a professional."--Mad Scientist
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