[Bug 1249343] [NEW] Packagekitd eating RAM, CPU

[Antti Haapala]

Public bug reported:

Since updating to saucy, packagekitd seems to eat all my memory, turning
computer sluggish. If I kill it it respawns soon and quickly eats half
the RAM. I have seen even seen VM size > 10G, with resident set sizes of
1-3G, way too much for a computer with 4G of RAM.

I do not know how to debug the issue; however looking at the
/proc/pid/fd shows something even more dubious, there are 578 open file
descriptors to files in /var; all apt-lists and /var/lib/dpkg/status are
opened with 12 filedescriptors? Also, /var/cache/apt/pkgcache.bin seems
to be memmapped quite some many times:

7f3b660c6000-7f3b68494000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
7f3b68c95000-7f3b6b063000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
7f3b6b864000-7f3b6dc32000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
7f3b6dc32000-7f3b70000000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
7f3b744f9000-7f3b768c7000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
7f3b79496000-7f3b7b864000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b7b864000-7f3b7dc32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b7dc32000-7f3b80000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b85c32000-7f3b88000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b8c928000-7f3b8ecf6000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b928c7000-7f3b94c95000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b95496000-7f3b97864000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b97864000-7f3b99c32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3b99c32000-7f3b9c000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3ba08c3000-7f3ba2c91000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3ba6862000-7f3ba8c30000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3ba9431000-7f3bab7ff000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bb02f0000-7f3bb26be000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bb26be000-7f3bb4a8c000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bb4a8c000-7f3bb6e5a000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bbb0cf000-7f3bbd49d000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bbe342000-7f3bc0710000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bc15b5000-7f3bc3983000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bc4828000-7f3bc6bf6000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
7f3bc7864000-7f3bc9c32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)

----

Description:    Ubuntu 13.10
Release:        13.10

packagekit:
  Installed: 0.8.10-2ubuntu2
  Candidate: 0.8.10-2ubuntu2
  Version table:
 *** 0.8.10-2ubuntu2 0
        500 http://se.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
        100 /var/lib/dpkg/status

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

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https://bugs.launchpad.net/bugs/1249343

Title:
  Packagekitd eating RAM, CPU

Status in “packagekit” package in Ubuntu:
  New

Bug description:
  Since updating to saucy, packagekitd seems to eat all my memory,
  turning computer sluggish. If I kill it it respawns soon and quickly
  eats half the RAM. I have seen even seen VM size > 10G, with resident
  set sizes of 1-3G, way too much for a computer with 4G of RAM.

  I do not know how to debug the issue; however looking at the
  /proc/pid/fd shows something even more dubious, there are 578 open
  file descriptors to files in /var; all apt-lists and
  /var/lib/dpkg/status are opened with 12 filedescriptors? Also,
  /var/cache/apt/pkgcache.bin seems to be memmapped quite some many
  times:

  7f3b660c6000-7f3b68494000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
  7f3b68c95000-7f3b6b063000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
  7f3b6b864000-7f3b6dc32000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
  7f3b6dc32000-7f3b70000000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
  7f3b744f9000-7f3b768c7000 rw-p 00000000 fc:08 1246201                    /var/cache/apt/pkgcache.bin
  7f3b79496000-7f3b7b864000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b7b864000-7f3b7dc32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b7dc32000-7f3b80000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b85c32000-7f3b88000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b8c928000-7f3b8ecf6000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b928c7000-7f3b94c95000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b95496000-7f3b97864000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b97864000-7f3b99c32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3b99c32000-7f3b9c000000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3ba08c3000-7f3ba2c91000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3ba6862000-7f3ba8c30000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3ba9431000-7f3bab7ff000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bb02f0000-7f3bb26be000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bb26be000-7f3bb4a8c000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bb4a8c000-7f3bb6e5a000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bbb0cf000-7f3bbd49d000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bbe342000-7f3bc0710000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bc15b5000-7f3bc3983000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bc4828000-7f3bc6bf6000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)
  7f3bc7864000-7f3bc9c32000 rw-p 00000000 fc:08 1245278                    /var/cache/apt/pkgcache.bin (deleted)

  ----

  Description:    Ubuntu 13.10
  Release:        13.10

  packagekit:
    Installed: 0.8.10-2ubuntu2
    Candidate: 0.8.10-2ubuntu2
    Version table:
   *** 0.8.10-2ubuntu2 0
          500 http://se.archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
          100 /var/lib/dpkg/status

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