[Bug 1178140] [NEW] top reports 9999% process CPU utilization

[f3a97]

Public bug reported:

I have set the top sampling interval to 60 seconds (just press "d" in
top, then enter 60).

Monitoring top reports (try also pressing space after setting new
interval, to refresh the top report), I noticed that top is reporting
9999% CPU utilization for a process, which is obviously wrong. This does
not happen with regular top intervals of 3 seconds.

Please find a screenshot attached.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: procps 1:3.2.8-11ubuntu6
ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
Uname: Linux 3.2.0-41-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: amd64
Date: Thu May  9 10:00:39 2013
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: procps
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: procps (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

** Attachment added: "top_screen.png"
   https://bugs.launchpad.net/bugs/1178140/+attachment/3670631/+files/top_screen.png

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https://bugs.launchpad.net/bugs/1178140

Title:
  top reports 9999% process CPU utilization

Status in “procps” package in Ubuntu:
  New

Bug description:
  I have set the top sampling interval to 60 seconds (just press "d" in
  top, then enter 60).

  Monitoring top reports (try also pressing space after setting new
  interval, to refresh the top report), I noticed that top is reporting
  9999% CPU utilization for a process, which is obviously wrong. This
  does not happen with regular top intervals of 3 seconds.

  Please find a screenshot attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: procps 1:3.2.8-11ubuntu6
  ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42
  Uname: Linux 3.2.0-41-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.2
  Architecture: amd64
  Date: Thu May  9 10:00:39 2013
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: procps
  UpgradeStatus: No upgrade log present (probably fresh install)

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