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<p>Hi,</p>
<p><br>
</p>
<p>Using Xymon 4.3.19, we noticed that all our RHEL 7 systems are reporting wrong values.</p>
<p>These systems now use free from procps-ng 3.3.10 whose output has changed.</p>
<p><br>
</p>
<p>-- free output on RHEL 5/6 ---</p>
<p><span style="font-family:'Courier New',monospace; font-size:9pt">[bb@prdexp ~]$ free<br style="">
</span></p>
<p><span style="font-family:'Courier New',monospace; font-size:9pt"> total used free shared buffers cached<br style="">
Mem: 65916528 63391732 2524796 1376104 1484472 47773272<br style="">
-/+ buffers/cache: 14133988 51782540<br style="">
Swap: 16777212 180816 16596396</span></p>
<p><br>
</p>
<p>--- free output on RHEL 7 ---</p>
<p><span style="font-family:'Courier New',monospace; font-size:9pt">[bb@hns ~]$ free</span><br style="font-family:'Courier New',monospace; font-size:9pt">
<span style="font-family:'Courier New',monospace; font-size:9pt"> total used free shared buff/cache available</span><br style="font-family:'Courier New',monospace; font-size:9pt">
<span style="font-family:'Courier New',monospace; font-size:9pt">Mem: 8011888 318844 3365516 98788 4327528 7275020</span><br style="font-family:'Courier New',monospace; font-size:9pt">
<span style="font-family:'Courier New',monospace; font-size:9pt">Swap: 8388604 0 8388604</span></p>
<p><br>
</p>
<p><br>
</p>
<p>The "<span style="font-family:'Courier New',monospace; font-size:9pt">-/+ buffers/cache</span>:" has disappeared, the "<span style="font-family:'Courier New',monospace; font-size:9pt">used</span>" is now calculated as total - free - buffers - cache, and
there is an "<span style="font-family:'Courier New',monospace; font-size:9pt">available</span>" column which is an "Estimation of how much memory is available for starting new applications, without swapping".
<br>
</p>
<p>The man page details all that.</p>
<p><br>
</p>
<p>Dominique</p>
<p>University of Lausanne<br>
</p>
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</p>
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