在 2012年2月16日 下午9:33，黄小伟 <jingle2422@xxxxxxx> 写道： > I know this, but I want to reclaim dynamically. Say in a shout time, several > seconds. http://www.kernel.org/doc/Documentation/sysctl/vm.txt drop_caches Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free. To free pagecache: echo 1 > /proc/sys/vm/drop_caches To free dentries and inodes: echo 2 > /proc/sys/vm/drop_caches To free pagecache, dentries and inodes: echo 3 > /proc/sys/vm/drop_caches As this is a non-destructive operation and dirty objects are not freeable, the user should run `sync' first. So the left thing, you could write down scripts or codes to do the action above while detecting the operation of the device. > > > > 在 2012-02-16 21:21:11，"Manish Katiyar" <mkatiyar@xxxxxxxxx> 写道： >>2012/2/16 黄小伟 <jingle2422@xxxxxxx>: >>> Hi >>> I encounter a problem recentely. My system supports USB strorage and >>> other network applications. >>> But after I put a file to usb storage, it will consume some many >>> momory. >>> (buffer + cache). >>> And these buffered memory can not be reclaimed(use free command). >>> So I want to know how to reclaim the buffer memory in a short time. >> >>Google for ./sys/vm/drop_caches >> >>-- >>Thanks - >>Manish >> >>_______________________________________________ >>Kernelnewbies mailing list >>Kernelnewbies@xxxxxxxxxxxxxxxxx >>http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Best Regards Lin _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
