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List:       kde-usability
Subject:    Re: improved Crash Dialog needed
From:       Michael Pye <mp () fuckmicrosoft ! com>
Date:       2002-08-24 9:12:14
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On Saturday 24 August 2002 10:07 am, Ryan Cumming wrote:

> Okay, here's my plan:
> We start a tiny, non-KDE daemon. This daemon would be sort of a watchdog, 
> waking up every few seconds to make sure the computer is all right. This 
> would involve checking if any process has obviously "run away" to the point 
> of making the computer unresponsive. "Run away" could be defined as a 
process 
> using an unreasonable amount of memory and/or CPU time, when other programs 
> are obviously contending for those resources. 
> 
> If the computer isn't okay, we pop up a dialog. This dialog would give the 
> user the option of terminating the application, or ignoring the potential 
> problem. See http://completely.kicks-ass.org/watchdog-mockup.png for an idea 
> of what that dialog could look like.
> 
> This is one case where the devil is definitely in the details. The daemon, 
> dialog, and X-server would be susceptible to the same resource drain that is 
> affecting the rest of the computer. One solution would be for the daemon to 
> run at a realtime priority, with all of its memory mlock()'ed in place. When 
> it encountered a potential trouble process, it would immediately SIGPAUSE 
it. 
> This should (temporarily) relieve the resource contention that the process 
> was causing, allowing the computer to become at least somewhat responsive 
> again.
> 
> At this point the daemon would launch the dialog process with an elevated 
> priority (nice level of -19). Depending on the result of the dialog process, 
> the realtime daemon will either SIGCONT the process and allow it to 
continue, 
> or SIGKILL in to oblivion.
> 
> Comments?

How often would gcc trigger this? Particularly if I am working at the same 
time...
-- 
MP
_______________________________________________________________
Linux gremlin 2.4.19-gentoo-r7 i686 AuthenticAMD
 10:10am  up 32 min,  1 user,  load average: 0.04, 0.06, 0.07

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