0

When PSIZE is available, does atop use it to make the MEM figure more useful, or does the MEM figure in atop always reflect RSIZE (RSS)?

The manpage seems unhelpful.

MEM

The occupation percentage of this process related to the available capacity for this resource on system level.

1 Answer 1

0

I tested on atop-2.3.0-8.fc27.x86_64.

RSIZE, not PSIZE, is used when sorting by memory usage (use the M key), and for the MEM column.

RSIZE   PSIZE   MEM
311.0M  260.2M  4%
303.3M  288.1M  4%
217.6M  123.1M  3%

More detailed output:

  PID    TID  MINFLT  MAJFLT  VSTEXT  VSLIBS   VDATA  VSTACK   VSIZE   RSIZE   PSIZE   VGROW   RGROW  SWAPSZ  RUID      EUID       MEM  CMD

 1782      -    2413       0     16K  96480K  361.5M    288K    3.8G  311.0M  260.2M  10772K   9448K      0K  alan  alan        4%  gnome-shell
 1455      -       0       0    280K  30860K  340.8M    132K    1.0G  303.3M  288.1M      0K      0K      0K  root  root        4%  packagekitd
13561      -   41988      34    196K  143.2M  298.0M    136K    2.2G  217.6M  123.1M  255.3M  139.0M      0K  alan  alan        3%  Web Content
13333      -   25219       0    196K  119.6M  277.9M    144K    2.1G  190.9M  111.9M      0K   3560K      0K  alan  alan        2%  Web Content

https://www.atoptool.nl/screenshots.php

The memory percentage (column MEM) shows the resident memory occupation by this process, because that is what matters when your system starts swapping.

https://www.atoptool.nl/download/case_leakage.pdf

The memory details (subcommand 'm') show the current RSS per process in the column RSIZE and (as a percentage of the total memory installed) in the column MEM.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .