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Re: [Condor-users] KeyBoard Idle Time infinite
- Date: Mon, 11 Feb 2008 16:48:37 -0600
- From: Todd Tannenbaum <tannenba@xxxxxxxxxxx>
- Subject: Re: [Condor-users] KeyBoard Idle Time infinite
David McBride wrote:
In testing, I found that any keyboard event results in an atime update,
regardless of whether the event was captured by an xterm, a Thunderbird message
window, a Firefox URL bar, or simply a modifier-key captured by the window manager.
Hi David -
The above is great news. I was under the (apparently false) impression
that the atimes on keyboard devices were never updated if the keyboard
is USB. If I am reading you correctly, you are saying that atimes are
indeed updated on ttyS with USB keyboards, and the only remaining
problem is USB mice (which we could potentially do a read on the device
like Preston mentioned).
It's simple to test to see whether it works for yourself:
* In one terminal, run `watch -n0 stat /dev/ttyN` (where N is the the TTY
managed by your session, probably '7' -- check with `w` output.)
* Whilst watching the atime field in the terminal, experiment with different
classes of keyboard input..
With non-USB keyboard, Condor would catch that activity by atime changes
on /dev/keyboard and /dev/mouse, but atimes do not change with USB
devices on an unpatched kernel....