Public bug reported:

When I do /usr/bin/time ./a.out, where a.out is a program which just
allocates 512MB, writes to it at random then stops, I get told that the
max resident space is about two gigabytes.  Looking at other programs,
it is consistently given as too large by a factor four.

driver@tractor:/home/nfsworld/aliquot/5748.1428$ uname -a
Linux tractor 2.6.32-33-server #70-Ubuntu SMP Thu Jul 7 22:28:30 UTC 2011 
x86_64 GNU/Linux
driver@tractor:/home/nfsworld/aliquot/5748.1428$ /usr/bin/time -V
GNU time 1.7
driver@tractor:/home/nfsworld/aliquot/5748.1428$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.3 LTS"

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

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https://bugs.launchpad.net/bugs/840944

Title:
  'max resident' output too large by factor 4

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