Abhishek Rane wrote: > Hi there, > I have a doubt whenever i do echo 1 >> > /proc/sys/vm/drop_caches it drops the caches..I also see a > "significant" change in the Memory stats of the Gnome system manager.I > feel kinda happy but all i know about it is that it drops the caches.I > want to know whether it is safe to do that?.Also will echo 2 or echo 3 > make a difference?..and how can it be useful for a normal user like me > who browses the net and stuff? > Some pointers on how to use drop_caches: http://www.linuxinsight.com/proc_sys_vm_drop_caches.html It shouldn't really matter whether you do it or not, the kernel should take care of this when you need more memory. Like throw away some of it's file-cache to make room for your programs. And yes, it is safe to do.