? 2012?2?16? ??9:33???? [off-list ref] ???

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.

? 2012-02-16 21:21:11?"Manish Katiyar" [off-list ref] ???

quoted

2012/2/16 ??? [off-list ref]:

quoted

 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

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Best Regards
Lin