Doubt on echo 1 >> /proc/sys/vm/drop_caches

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To: For users of Fedora <fedora-list@xxxxxxxxxx>
Subject: Doubt on echo 1 >> /proc/sys/vm/drop_caches
From: Abhishek Rane <abhishekrane@xxxxxxxxx>
Date: Sat, 22 Dec 2007 00:26:36 +0530
Reply-to: For users of Fedora <fedora-list@xxxxxxxxxx>
User-agent: Thunderbird 2.0.0.9 (X11/20071115)

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 kindahappy but all i know about it is that it drops the caches.I want to knowwhether it is safe to do that?.Also will echo 2 or echo 3 make adifference?..and how can it be useful for a normal user like me whobrowses the net and stuff?

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