From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id BE08E6B0202 for ; Wed, 12 May 2010 00:54:25 -0400 (EDT) Received: by vws7 with SMTP id 7so1559677vws.14 for ; Tue, 11 May 2010 21:54:23 -0700 (PDT) MIME-Version: 1.0 Date: Tue, 11 May 2010 21:54:23 -0700 Message-ID: Subject: Newbie question about 2.4.21 kernel /proc/meminfo caculation From: Vincent Li Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org To: Linux-MM List-ID: I am running an old kernel 2.4.21, I am curious how each items add up to the MemTotal or any simple addition math in them? for example: # cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 1049841664 1024647168 25194496 0 31010816 163115008 Swap: 2371338240 26906624 2344431616 MemTotal: 1025236 kB MemFree: 24604 kB MemShared: 0 kB Committed: 257936 kB Buffers: 30284 kB Cached: 148412 kB SwapCached: 10880 kB Active: 276704 kB ActiveAnon: 164016 kB ActiveCache: 112688 kB Inact_dirty: 37688 kB Inact_laundry: 15400 kB Inact_clean: 14888 kB Inact_target: 68936 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 1025236 kB LowFree: 24604 kB SwapTotal: 2315760 kB SwapFree: 2289484 kB CommitLimit: 2828376 kB Committed_AS: 257936 kB HugePages_Total: 154 HugePages_Free: 0 Hugepagesize: 4096 kB I found that Inact_target = Inact_dirty + Inact_laundry + Inact_clean, but MemTotal = MemFree + Buffers + Cached + Active + Inact_target + CommitLimted_AS + ? Tried to dig into 2.4.21 kernel source code, have not be able to find those memory data caculations, any pointer would be greatly appreciated! Thanks Vincent Li -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org