[Bug 1635501] [NEW] In top, sorting by USED doesn't sort properly.

[Olathe]

Public bug reported:

1) Description:    Ubuntu 16.04.1 LTS
   Release:        16.04

2) procps:
     Installed: 2:3.3.10-4ubuntu2
     Candidate: 2:3.3.10-4ubuntu2
     Version table:
    *** 2:3.3.10-4ubuntu2 500
           500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
           100 /var/lib/dpkg/status

3) Sorting by `USED` in `top` will produce a list of programs that are
sorted in descending order of total memory use.

4) Sorting by `USED` in `top` will produce a list of programs that are
seemingly randomly sorted.

====

Procedure:

1) Run `top`.
2) Press uppercase F.
3) Press up arrow or down arrow until you get to USED.
4) Press space to get USED to show up on the main screen.
5) Press lowercase s to sort by USED.
6) Press lowercase q to go back to the main screen.
7) Note that the sorting isn't done properly.

Example output:

2  PID  PPID S %MEM   USED    RES   SWAP    SHR    VIRT COMMAND
 18783  1645 S  9.3 263736 189680  74056  58776 1297844 chrome
  1511  1509 S  0.2  98772   3468  95304      0  712504 FAHClient
 18856 18796 S  6.5 160712 132384  28328  19356 1109696 chrome
 18816 18783 S  2.8 102516  57248  45268  17976 1117556 chrome
 18851 18796 S  5.2 137308 106624  30684  25080  894612 chrome
  1167  1148 S  2.3  82984  46836  36148   7416  433728 Xorg

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: procps 2:3.3.10-4ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Oct 20 23:18:42 2016
EcryptfsInUse: Yes
SourcePackage: procps
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1635501

Title:
  In top, sorting by USED doesn't sort properly.

Status in procps package in Ubuntu:
  New

Bug description:
  1) Description:    Ubuntu 16.04.1 LTS
     Release:        16.04

  2) procps:
       Installed: 2:3.3.10-4ubuntu2
       Candidate: 2:3.3.10-4ubuntu2
       Version table:
      *** 2:3.3.10-4ubuntu2 500
             500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
             100 /var/lib/dpkg/status

  3) Sorting by `USED` in `top` will produce a list of programs that are
  sorted in descending order of total memory use.

  4) Sorting by `USED` in `top` will produce a list of programs that are
  seemingly randomly sorted.

  ====

  Procedure:

  1) Run `top`.
  2) Press uppercase F.
  3) Press up arrow or down arrow until you get to USED.
  4) Press space to get USED to show up on the main screen.
  5) Press lowercase s to sort by USED.
  6) Press lowercase q to go back to the main screen.
  7) Note that the sorting isn't done properly.

  Example output:

  2  PID  PPID S %MEM   USED    RES   SWAP    SHR    VIRT COMMAND
   18783  1645 S  9.3 263736 189680  74056  58776 1297844 chrome
    1511  1509 S  0.2  98772   3468  95304      0  712504 FAHClient
   18856 18796 S  6.5 160712 132384  28328  19356 1109696 chrome
   18816 18783 S  2.8 102516  57248  45268  17976 1117556 chrome
   18851 18796 S  5.2 137308 106624  30684  25080  894612 chrome
    1167  1148 S  2.3  82984  46836  36148   7416  433728 Xorg

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: procps 2:3.3.10-4ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
  Uname: Linux 4.4.0-38-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Thu Oct 20 23:18:42 2016
  EcryptfsInUse: Yes
  SourcePackage: procps
  UpgradeStatus: No upgrade log present (probably fresh install)

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