[Xymon] wrong memory report with free command from procps-ng

[Dominique Frise]

Hi,


Using Xymon 4.3.19, we noticed that all our RHEL 7 systems are reporting wrong values.

These systems now use free from procps-ng 3.3.10 whose output has changed.


-- free output on RHEL 5/6 ---

[bb at prdexp ~]$ free

             total       used       free     shared    buffers     cached
Mem:      65916528   63391732    2524796    1376104    1484472   47773272
-/+ buffers/cache:   14133988   51782540
Swap:     16777212     180816   16596396


--- free output on RHEL 7 ---

[bb at hns ~]$ free
              total        used        free      shared  buff/cache   available
Mem:        8011888      318844     3365516       98788     4327528     7275020
Swap:       8388604           0     8388604



The "-/+ buffers/cache:" has disappeared, the "used" is now calculated as total - free - buffers - cache, and there is an "available" column which is an "Estimation of how much memory is available for starting new applications, without swapping".

The man page details all that.


Dominique

University of Lausanne





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