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The Tuesday 2007-04-17 at 11:15 +0200, Clayton wrote:
> I traced the problem.... a failing IDE hard drive. Here's a little
> info to close off this thread.
>
> From the look of it, it was coincidental that Ruby was involved. Ruby
> seemed to be involved because whatever script it was handling was
> attempting read or write into the bad area. The result... the system
> paused briefly while it tried to sort out the read/write error.
Makes sense... after we know it :-)
There is an applet that might have helped. You know those kinds of applets
that show a cpu usage graph? But there is one type of "busy" that doesn't
usually show, and it is the percent of time the cpu is waiting for I/O.
Typicals are "user, system, nice, idle", but IOwait is usually neglected.
The gnome cpu monitor does show it, in black over black, and I always
change it to some dark color that I can see: thus I know when my system
becomes unresponsive but cpu is low that disk usage is high; ie, that the
cpu is waiting for the disk.
In your case it could have shown something.
- --
Cheers,
Carlos E. R.
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