Re: [Condor-users] KeyBoard Idle Time infinite

[Todd Tannenbaum <tannenba@xxxxxxxxxxx>]

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.
[snip]

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).


Thanks David,
Todd


> 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....

> Cheers,
> David