/tags/computer-data-storage/ Recent content in Computer Data Storage on Amit Agarwal Linux Blog Hugo -- gohugo.io en Sun, 24 Apr 2011 02:24:52 +0000 /2011/04/24/vmstat-what-it-is-and-how-to-use/ Sun, 24 Apr 2011 02:24:52 +0000 /2011/04/24/vmstat-what-it-is-and-how-to-use/ <div class="zemanta-img" style="margin: 1em; display: block;"> <p> <figure style="width: 300px" class="wp-caption alignright"><a href="http://commons.wikipedia.org/wiki/File:Paging_386%28pl%29.svg"><img title="Paging on 386 - address translation (polish texts)" src="http://upload.wikimedia.org/wikipedia/commons/thumb/9/90/Paging_386%28pl%29.svg/300px-Paging_386%28pl%29.svg.png" alt="Paging on 386 - address translation (polish texts)" width="300" height="208" /></a><figcaption class="wp-caption-text">Image via Wikipedia</figcaption></figure> </p> </div> <!--[ad#ad-2]--> <p><a class="zem_slink" title="Vmstat" rel="wikipedia" href="http://en.wikipedia.org/wiki/Vmstat">vmstat</a> provides a summary of various functions within the system, including system wide free memory, paging counters, summarized disk activity, <a class="zem_slink" title="System call" rel="wikipedia" href="http://en.wikipedia.org/wiki/System_call">system calls</a> and cpu utilization.</p> <p>The <a class="zem_slink" title="Output" rel="wikipedia" href="http://en.wikipedia.org/wiki/Output">output</a> of vmstat and description of what each field means:</p> <p>The first line of output from vmstat shows a summary since boot,<br> followed by the output over the last 3 seconds for each additional line.</p>