Re: UPS freeze computer

From: William Morris (
Date: Mon Nov 05 2001 - 09:31:27 GMT

On Fri, Nov 02, 2001 at 03:30:00PM +0000, Mike Ellis wrote:
> Hiya!
> >I frequently find that UPS causes my computer to run *very* slowly
> >for a period and then to recover for a while (eg when UPS hits a
> >breakpoint).  This makes the debugger almost unusable on certain
> >programs - it appears (although this may be coincidence) to be worst
> >on programs that use network sockets.


Thanks for suggestion.

> Just a wild stab in the dark - are you using "step" to miss out things like 
> calls to socket(),  bind() etc,  or are you using "next".  

	No, unfortunately the problem doesn't just appear on stepping,
	but on any activity (eg just running).  I was probably wrong
	to mention sockets - I don't think the problem is restricted
	to such programs.

An example of the problem:

	I just started a simple X client under ups.  The client is
	running with no break points.  It has no background activity
	so it is just waiting for X events.  Mutt is open partially
	hiding the debugger and the program under test and also
	partially hiding my clock (buiciClock).  

	The clock second-hand is advancing in steps of 5-10 seconds
	(without UPS it is every second).  If I push Mutt to the back
	of the window stack, the clock, UPS and X client windows
	remain unrefreshed for 5=10 seconds after which they are
	repainted once (and the clock ticks on by the interval). 

	xload is showing a heavy continuous load implying that UPS is
	busy doing something.

Any help greatfully received.

William Morris

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