http://wiki.lli.be/index.php?action=history&feed=atom&title=Swappiness 2026-05-14T13:46:13Z Historique des versions pour cette page sur le wiki MediaWiki 1.45.3 http://wiki.lli.be/index.php?title=Swappiness&diff=246&oldid=prev 2023-03-25T14:09:34Z

<p>Page créée avec « get current setting get sysctl kernel.ostype $ sysctl -a $ sysctl -a | grep kernel $ sysctl -a | more ie swappiness &lt;nowiki&gt;https://www.howtogeek.com/449691/what-is-swapiness-on-linux-and-how-to-change-it/&lt;/nowiki&gt; cat /proc/sys/vm/swappiness sudo sysctl vm.swappiness=0 or sudo sh -c ‘echo 0 &gt; /proc/sys/vm/swappiness’ persistent old /etc/sysctl.conf &lt;nowiki&gt;#&lt;/nowiki&gt; backup sudo cp -p /etc/sysctl.conf /etc/sysctl.conf.`date +%Y%m%d-%H:%M` s... »</p> <p><b>Nouvelle page</b></p><div>get current setting<br /> <br /> get<br /> <br /> sysctl kernel.ostype<br /> <br /> $ sysctl -a<br /> <br /> $ sysctl -a | grep kernel<br /> <br /> $ sysctl -a | more<br /> <br /> ie swappiness<br /> <br /> &lt;nowiki&gt;https://www.howtogeek.com/449691/what-is-swapiness-on-linux-and-how-to-change-it/&lt;/nowiki&gt;<br /> <br /> cat /proc/sys/vm/swappiness<br /> <br /> sudo sysctl vm.swappiness=0<br /> <br /> or<br /> <br /> sudo sh -c ‘echo 0 &gt; /proc/sys/vm/swappiness’<br /> <br /> persistent<br /> <br /> old<br /> <br /> /etc/sysctl.conf<br /> <br /> &lt;nowiki&gt;#&lt;/nowiki&gt; backup <br /> <br /> sudo cp -p /etc/sysctl.conf /etc/sysctl.conf.`date +%Y%m%d-%H:%M`<br /> <br /> sudo sh -c &#039;echo &quot;&quot; &gt;&gt; /etc/sysctl.conf&#039;<br /> <br /> &lt;nowiki&gt;#&lt;/nowiki&gt;or <br /> <br /> sudo vi /etc/sysctl.conf <br /> <br />    # add `vm.swappiness = 0`<br /> <br /> &lt;nowiki&gt;##&lt;/nowiki&gt; apply configu <br /> <br /> sysctl -p<br /> <br /> automatiquement<br /> <br /> sudo sh -c &#039;echo &quot;&quot; &gt;&gt; /etc/sysctl.conf&#039;<br /> <br /> sudo sh -c &#039;echo &quot;#Set swappiness to 0 to avoid swapping `date +%Y%m%d-%H:%M`&quot; &gt;&gt; /etc/sysctl.conf&#039;<br /> <br /> sudo sh -c &#039;echo &quot;vm.swappiness = 0&quot; &gt;&gt; /etc/sysctl.conf&#039;<br /> <br /> new (.d)<br /> <br /> sysctl how to configure<br /> <br /> &lt;nowiki&gt;https://www.cyberciti.biz/faq/reload-sysctl-conf-on-linux-using-&lt;/nowiki&gt; sysctl/<br /> <br /> /etc/sysctl.d/<br /> <br /> cat /etc/sysctl.d/99-swappiness.conf<br /> <br /> vm.swappiness=10<br /> <br /> How to reload sysctl.conf variables on Linux<br /> <br /> Type the following command to reload settings from config files without rebooting the box:<br /> <br /> sysctl --system<br /> <br /> The settings are read from all of the following system configuration files:<br /> <br /> /run/sysctl.d/*.conf<br /> <br /> /etc/sysctl.d/*.conf<br /> <br /> /usr/local/lib/sysctl.d/*.conf<br /> <br /> /usr/lib/sysctl.d/*.conf<br /> <br /> /lib/sysctl.d/*.conf<br /> <br /> /etc/sysctl.conf<br /> <br /> note<br /> <br /> /etc/sysctl.conf<br /> <br /> vm.swappiness = 1<br /> <br /> vm.dirty_background_ratio = 3<br /> <br /> vm.dirty_ratio = 80<br /> <br /> vm.dirty_expire_centisecs = 500<br /> <br /> vm.dirty_writeback_centisecs = 100<br /> <br /> kernel.shmmax = 4398046511104<br /> <br /> kernel.shmall = 1073741824<br /> <br /> kernel.shmmni = 4096<br /> <br /> sysctl -p<br /> <br /> sysctl -p /etc/sysctl.d/99-swappiness.conf<br /> <br /> 32 bits = 32768 2^16<br /> <br /> 64 bits = 4194304 2^22<br /> <br /> max pid<br /> <br /> bash fork cannot allocate memory<br /> <br /> temporary<br /> <br /> cat /proc/sys/kernel/pid_max<br /> <br /> echo 32768 &gt; /proc/sys/kernel/pid_max<br /> <br /> permanent<br /> <br /> /etc/sysctl.conf or /etc/sysctl.d/98-pid_max.conf<br /> <br /> kernel.pid_max = 4194304<br /> [[Catégorie:Linux]]</div>

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