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Old 06-20-2004, 03:25 PM   #1
Registered: Jul 2001
Distribution: Ubuntu
Posts: 195

Rep: Reputation: 30
nano using >99% of CPU!!!

What was going on???

I used nano earlier during the day and I came back to my computer to find that almost 100% CPU usage, and nothing running. Strangely this did not slow the computer at all, but it was strange. I ran "top" and found nano was responsible, though I had closed the Terminal it was running in earlier (probably why it was unhappy).

I just killed the process, and everything went back to normal.

Is this normal? Is this a bug? How do I find out what it was doing?
Old 06-20-2004, 03:41 PM   #2
Registered: Feb 2002
Location: Grenoble
Distribution: Debian
Posts: 9,571

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Try and leave it again. It shouldn't use so much processor power, especially when idle. So it looks it's a bug.
Old 06-21-2004, 08:15 PM   #3
Registered: Jul 2001
Distribution: Ubuntu
Posts: 195

Original Poster
Rep: Reputation: 30
I've tried reproducing it and I can't I can't see the problem would be with nano though...its such a small simple program, which leads me to think something else must have messed up. Either way, I guess its not worth putting too much time towards.

Old 06-22-2004, 09:52 PM   #4
LQ Newbie
Registered: May 2004
Location: Germany
Distribution: Debian
Posts: 22

Rep: Reputation: 15
I don't know if it's the same issue, but if I use a sudo aptitude in a terminal window and don't exit the program but just close the window, I get the same (aptitude using 100% cpu). That is due to aptitude being a root process that can't be shut down from the terminal window which only has user privileges. I think aptitude then tries to do some I/O without having a terminal and thus starts munching cpu out of frustration.

As I said, it might not be related but it looks the same.
Old 06-22-2004, 11:41 PM   #5
Registered: Jul 2001
Distribution: Ubuntu
Posts: 195

Original Poster
Rep: Reputation: 30
That is exactly it. I can reproduce the problem. So would that be a bug? If so, I'm assuming that is with the terminal rather than nano.

Thanks, its good to know what happened.


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