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 ESMTP id 29FA56B0047 for ; Wed, 30 Nov 2011 12:10:55 -0500 (EST) Received: by faaa26 with SMTP id a26so940445faa.14 for ; Wed, 30 Nov 2011 09:10:52 -0800 (PST) MIME-Version: 1.0 Date: Wed, 30 Nov 2011 11:10:51 -0600 Message-ID: Subject: memory zone_stat_item all stats 0 From: sheng qiu Content-Type: multipart/alternative; boundary=f46d040fa000691eea04b2f6d17b Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm --f46d040fa000691eea04b2f6d17b Content-Type: text/plain; charset=ISO-8859-1 hi all, i have a question, i looked at my zone information through /proc/zoneinfor, i see that one zone has all the zone_stat_item equal 0. i just do not understand why? and where inside the kernel, it did this stats for each zone? here's the output of that zone: Node 0, zone Non-volatile pages free 209598 min 1097 low 1371 high 1645 scanned 0 spanned 1310720 present 1292800 nr_free_pages 209598 nr_inactive_anon 0 nr_active_anon 0 nr_inactive_file 0 nr_active_file 0 nr_unevictable 0 nr_mlock 0 nr_anon_pages 0 nr_mapped 0 nr_file_pages 0 nr_dirty 0 nr_writeback 0 nr_slab_reclaimable 0 nr_slab_unreclaimable 0 nr_page_table_pages 0 nr_kernel_stack 0 nr_unstable 0 nr_bounce 0 nr_vmscan_write 0 nr_writeback_temp 0 nr_isolated_anon 0 nr_isolated_file 0 nr_shmem 0 protection: (0, 0, 0, 0, 0) pagesets cpu: 0 count: 64 high: 186 batch: 31 vm stats threshold: 42 cpu: 1 count: 23 high: 186 batch: 31 vm stats threshold: 42 cpu: 2 count: 0 high: 186 batch: 31 vm stats threshold: 42 cpu: 3 count: 30 high: 186 batch: 31 vm stats threshold: 42 all_unreclaimable: 0 prev_priority: 12 start_pfn: 1048576 inactive_ratio: 6 Thanks, Sheng -- Sheng Qiu Texas A & M University Room 302 Wisenbaker email: herbert1984106@gmail.com College Station, TX 77843-3259 --f46d040fa000691eea04b2f6d17b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable hi all,

i have a question, i looked at my zone information through /= proc/zoneinfor,=A0 i see that one zone has all the zone_stat_item equal 0.= =A0 i just do not understand why? and where inside the kernel, it did this = stats for each zone?
here's the output of that zone:
Node 0, zone Non-volatile
=A0 pag= es free=A0=A0=A0=A0 209598
=A0=A0=A0=A0=A0=A0=A0 min=A0=A0=A0=A0=A0 1097=
=A0=A0=A0=A0=A0=A0=A0 low=A0=A0=A0=A0=A0 1371
=A0=A0=A0=A0=A0=A0=A0 = high=A0=A0=A0=A0 1645
=A0=A0=A0=A0=A0=A0=A0 scanned=A0 0
=A0=A0=A0=A0= =A0=A0=A0 spanned=A0 1310720
=A0=A0=A0=A0=A0=A0=A0 present=A0 1292800 =A0=A0=A0 nr_free_pages 209598
=A0=A0=A0 nr_inactive_anon 0
=A0=A0=A0= nr_active_anon 0
=A0=A0=A0 nr_inactive_file 0
=A0=A0=A0 nr_active_fi= le 0
=A0=A0=A0 nr_unevictable 0
=A0=A0=A0 nr_mlock=A0=A0=A0=A0 0
= =A0=A0=A0 nr_anon_pages 0
=A0=A0=A0 nr_mapped=A0=A0=A0 0
=A0=A0=A0 nr= _file_pages 0
=A0=A0=A0 nr_dirty=A0=A0=A0=A0 0
=A0=A0=A0 nr_writeback 0
=A0=A0=A0 n= r_slab_reclaimable 0
=A0=A0=A0 nr_slab_unreclaimable 0
=A0=A0=A0 nr_p= age_table_pages 0
=A0=A0=A0 nr_kernel_stack 0
=A0=A0=A0 nr_unstable= =A0 0
=A0=A0=A0 nr_bounce=A0=A0=A0 0
=A0=A0=A0 nr_vmscan_write 0
=A0=A0=A0 nr_writeback_temp 0
=A0=A0=A0 nr_isolated_anon 0
=A0=A0=A0 = nr_isolated_file 0
=A0=A0=A0 nr_shmem=A0=A0=A0=A0 0
=A0=A0=A0=A0=A0= =A0=A0 protection: (0, 0, 0, 0, 0)
=A0 pagesets
=A0=A0=A0 cpu: 0
= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 count: 64
=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0 high:=A0 186
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 batch: 31
=A0 vm stats threshold= : 42
=A0=A0=A0 cpu: 1
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 count: = 23
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 high:=A0 186
=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0 batch: 31
=A0 vm stats threshold: 42
=A0= =A0=A0 cpu: 2
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 count: 0
=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 high:=A0 186
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 batch: 31
=A0 vm stats threshold= : 42
=A0=A0=A0 cpu: 3
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 count: = 30
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 high:=A0 186
=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0 batch: 31
=A0 vm stats threshold: 42
=A0 = all_unreclaimable: 0
=A0 prev_priority:=A0=A0=A0=A0 12
=A0 start_pfn:=A0=A0=A0=A0=A0=A0=A0=A0 1048576
=A0 inactive_ratio:=A0=A0= =A0 6

Thanks,
Sheng

--
Sheng Qiu
Texa= s A & M University
Room 302 Wisenbaker=A0 =A0
email: herbert1984106@gmail.com
College Station, TX 77843-3259
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