<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">I know this, but I want to reclaim dynamically. Say in a shout time, several seconds.<br><br><div></div><div id="divNeteaseMailCard"></div><br><pre><br>在&nbsp;2012-02-16&nbsp;21:21:11，"Manish&nbsp;Katiyar"&nbsp;&lt;mkatiyar@gmail.com&gt;&nbsp;写道：

&gt;2012/2/16&nbsp;黄小伟&nbsp;&lt;jingle2422@163.com&gt;:

&gt;&gt;&nbsp;&nbsp;Hi

&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I&nbsp;encounter&nbsp;a&nbsp;problem&nbsp;recentely.&nbsp;My&nbsp;system&nbsp;supports&nbsp;USB&nbsp;strorage&nbsp;and

&gt;&gt;&nbsp;other&nbsp;network&nbsp;applications.

&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;But&nbsp;after&nbsp;I&nbsp;put&nbsp;a&nbsp;file&nbsp;to&nbsp;usb&nbsp;storage,&nbsp;it&nbsp;will&nbsp;consume&nbsp;some&nbsp;many

&gt;&gt;&nbsp;momory.

&gt;&gt;&nbsp;(buffer&nbsp;+&nbsp;cache).

&gt;&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;And&nbsp;these&nbsp;buffered&nbsp;memory&nbsp;can&nbsp;not&nbsp;be&nbsp;reclaimed(use&nbsp;free&nbsp;command).

&gt;&gt;&nbsp;So&nbsp;I&nbsp;want&nbsp;to&nbsp;know&nbsp;how&nbsp;to&nbsp;reclaim&nbsp;the&nbsp;buffer&nbsp;memory&nbsp;in&nbsp;a&nbsp;short&nbsp;time.

&gt;

&gt;Google&nbsp;for&nbsp;./sys/vm/drop_caches

&gt;

&gt;--&nbsp;

&gt;Thanks&nbsp;-

&gt;Manish

&gt;

&gt;_______________________________________________

&gt;Kernelnewbies&nbsp;mailing&nbsp;list

&gt;Kernelnewbies@kernelnewbies.org

&gt;http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies

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