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Почему я не могу выделить столько памяти, сколько в отчетах `free`, сколько свободных?

Следующая программа на C выделяет 10 МБ памяти до тех пор, пока она не будет уничтожена убийцей Out of Memory.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int main() {
  int counter = 0;
  int slice_size = 10*1000*1000;
  char c = 0;

  while (1) {
    char *assigned = malloc(slice_size);
    memset(assigned, c, slice_size);
    counter++;
    printf("Managed to assign %d times %d\n", counter, slice_size);
    usleep(100000)
  }
}

При условии free -m (запускается сразу после запуска программы) сообщает о 6450 МБ свободной памяти

              total       used       free     shared    buffers     cached
Mem:          7583       1595       5988          0          0        462
-/+ buffers/cache:       1132       6450
Swap:            0          0          0

почему этой программе удается назначить только 623 раза по 10 МБ, прежде чем ее убьют?

Managed to assign 1 times 10000000
[..]
Managed to assign 622 times 10000000
Managed to assign 623 times 10000000
Killed

Кажется, что между тем, что я думал, что могу, есть пробел в 220 МБ. malloc и что я мог на самом деле malloc. Это не память ядра: cat /proc/meminfo сразу после запуска программы:

MemTotal:        7765376 kB
MemFree:         6131572 kB
Buffers:             568 kB
Cached:           473472 kB
SwapCached:            0 kB
Active:          1157360 kB
Inactive:         265020 kB
Active(anon):    1157152 kB
Inactive(anon):   207900 kB
Active(file):        208 kB
Inactive(file):    57120 kB
Unevictable:          32 kB
Mlocked:              32 kB
SwapTotal:             0 kB
SwapFree:              0 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:        948992 kB
Mapped:            37272 kB
Shmem:            415980 kB
Slab:              69556 kB
SReclaimable:      29180 kB
SUnreclaim:        40376 kB
KernelStack:        5152 kB
PageTables:        42932 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     3882688 kB
Committed_AS:    5347532 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      393956 kB
VmallocChunk:   34359336444 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      122368 kB
DirectMap2M:     7985152 kB

Некоторые возможные объяснения:

Вывод убийцы OOM:

[ 4153.253325] indicator-cpufr invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
[ 4153.253330] indicator-cpufr cpuset=/ mems_allowed=0
[ 4153.253332] Pid: 9282, comm: indicator-cpufr Tainted: PF          O 3.8.0-34-generic #49-Ubuntu
[ 4153.253334] Call Trace:
[ 4153.253340]  [snip: the usual]
[ 4153.253399] Mem-Info:
[ 4153.253400] Node 0 DMA per-cpu:
[ 4153.253402] CPU    0: hi:    0, btch:   1 usd:   0
[ 4153.253404] CPU    1: hi:    0, btch:   1 usd:   0
[ 4153.253405] CPU    2: hi:    0, btch:   1 usd:   0
[ 4153.253406] CPU    3: hi:    0, btch:   1 usd:   0
[ 4153.253407] Node 0 DMA32 per-cpu:
[ 4153.253409] CPU    0: hi:  186, btch:  31 usd:   0
[ 4153.253411] CPU    1: hi:  186, btch:  31 usd:   0
[ 4153.253412] CPU    2: hi:  186, btch:  31 usd:   0
[ 4153.253413] CPU    3: hi:  186, btch:  31 usd:   0
[ 4153.253414] Node 0 Normal per-cpu:
[ 4153.253416] CPU    0: hi:  186, btch:  31 usd:   0
[ 4153.253417] CPU    1: hi:  186, btch:  31 usd:   0
[ 4153.253418] CPU    2: hi:  186, btch:  31 usd:  16
[ 4153.253420] CPU    3: hi:  186, btch:  31 usd:   0
[ 4153.253424] active_anon:1799845 inactive_anon:59155 isolated_anon:0
[ 4153.253424]  active_file:36 inactive_file:0 isolated_file:0
[ 4153.253424]  unevictable:8 dirty:0 writeback:0 unstable:0
[ 4153.253424]  free:25796 slab_reclaimable:7380 slab_unreclaimable:10392
[ 4153.253424]  mapped:10662 shmem:115550 pagetables:14191 bounce:0
[ 4153.253424]  free_cma:0
[ 4153.253428] Node 0 DMA free:15884kB min:132kB low:164kB high:196kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
[ 4153.253432] lowmem_reserve[]: 0 2761 7776 7776
[ 4153.253435] Node 0 DMA32 free:43900kB min:23952kB low:29940kB high:35928kB active_anon:2571536kB inactive_anon:40804kB active_file:4kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:2827940kB managed:2629680kB mlocked:0kB dirty:0kB writeback:0kB mapped:16236kB shmem:40804kB slab_reclaimable:8kB slab_unreclaimable:76kB kernel_stack:0kB pagetables:5032kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:67 all_unreclaimable? yes
[ 4153.253439] lowmem_reserve[]: 0 0 5014 5014
[ 4153.253442] Node 0 Normal free:43400kB min:43496kB low:54368kB high:65244kB active_anon:4627844kB inactive_anon:195816kB active_file:140kB inactive_file:28kB unevictable:32kB isolated(anon):0kB isolated(file):0kB present:5134752kB managed:5085580kB mlocked:32kB dirty:0kB writeback:0kB mapped:26412kB shmem:421396kB slab_reclaimable:29512kB slab_unreclaimable:41476kB kernel_stack:5224kB pagetables:51732kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:348 all_unreclaimable? yes
[ 4153.253447] lowmem_reserve[]: 0 0 0 0
[ 4153.253450] Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15884kB
[ 4153.253460] Node 0 DMA32: 55*4kB (UEM) 57*8kB (UEM) 11*16kB (UEM) 10*32kB (UEM) 4*64kB (UEM) 2*128kB (E) 4*256kB (UEM) 3*512kB (EM) 3*1024kB (EM) 6*2048kB (UE) 6*4096kB (ER) = 44180kB
[ 4153.253472] Node 0 Normal: 189*4kB (UEM) 300*8kB (UEM) 94*16kB (UEM) 151*32kB (UEM) 138*64kB (E) 102*128kB (EM) 32*256kB (E) 0*512kB 0*1024kB 0*2048kB 1*4096kB (R) = 43668kB
[ 4153.253483] 115782 total pagecache pages
[ 4153.253484] 0 pages in swap cache
[ 4153.253486] Swap cache stats: add 0, delete 0, find 0/0
[ 4153.253486] Free swap  = 0kB
[ 4153.253487] Total swap = 0kB
[ 4153.269100] 2057712 pages RAM
[ 4153.269103] 116530 pages reserved
[ 4153.269104] 1123397 pages shared
[ 4153.269105] 1879649 pages non-shared
[ 4153.269106] [ pid ]   uid  tgid total_vm      rss nr_ptes swapents oom_score_adj name
[ 4153.269115] [  491]     0   491     3818       55      13        0             0 upstart-file-br
[ 4153.269119] [  551]     0   551     4462      204      14        0             0 upstart-udev-br
[ 4153.269121] [  557]     0   557     5437      197      16        0         -1000 udevd
[ 4153.269125] [ 1005]     0  1005     3815       50      12        0             0 upstart-socket-
[ 4153.269128] [ 1178]     0  1178    13064      150      30        0         -1000 sshd
[ 4153.269131] [ 1193]   102  1193     6278      389      16        0             0 dbus-daemon
[ 4153.269133] [ 1232]     0  1232    20853      207      45        0             0 modem-manager
[ 4153.269135] [ 1238]     0  1238     4944      218      13        0             0 bluetoothd
[ 4153.269138] [ 1241]   101  1241    61866      160      23        0             0 rsyslogd
[ 4153.269140] [ 1324]     0  1324     3958       41      13        0             0 getty
[ 4153.269143] [ 1332]     0  1332     3958       43      13        0             0 getty
[ 4153.269145] [ 1340]     0  1340     3958       41      14        0             0 getty
[ 4153.269148] [ 1341]     0  1341     3958       41      13        0             0 getty
[ 4153.269150] [ 1344]     0  1344     3958       41      13        0             0 getty
[ 4153.269153] [ 1386]     0  1386     1128       73       7        0             0 acpid
[ 4153.269155] [ 1387]     0  1387     4782       42      13        0             0 atd
[ 4153.269158] [ 1388]     0  1388     5332       62      16        0             0 cron
[ 4153.269160] [ 1390]   107  1390     8120      113      22        0             0 avahi-daemon
[ 4153.269162] [ 1391]   107  1391     8056       64      21        0             0 avahi-daemon
[ 4153.269166] [ 1398]     0  1398     4788       58      15        0             0 irqbalance
[ 4153.269168] [ 1414]     0  1414    68879      208      37        0             0 lightdm
[ 4153.269170] [ 1418]     0  1418    17608      170      38        0             0 cups-browsed
[ 4153.269173] [ 1449]     0  1449    62804      474      52        0             0 NetworkManager
[ 4153.269175] [ 1557]   115  1557   137486    15239      75        0             0 mysqld
[ 4153.269178] [ 1597]     0  1597    49116      571      35        0             0 polkitd
[ 4153.269180] [ 1608]     0  1608    18162      383      39        0             0 cupsd
[ 4153.269183] [ 1881]   105  1881    71731      348      71        0             0 whoopsie
[ 4153.269185] [ 2037]   103  2037    54203      412      42        0             0 colord
[ 4153.269188] [ 2100]     0  2100   102571     1105     131        0             0 libvirtd
[ 4153.269190] [ 2154]     0  2154     9049       93      24        0             0 bumblebeed
[ 4153.269193] [ 2159]     0  2159    66152      194      29        0             0 accounts-daemon
[ 4153.269196] [ 2186]     0  2186   522940      276      58        0             0 console-kit-dae
[ 4153.269198] [ 2380]     0  2380     8010      159      20        0             0 wpa_supplicant
[ 4153.269201] [ 2392]     0  2392    55684      358      43        0             0 upowerd
[ 4153.269203] [ 2545]   117  2545     6521       63      17        0             0 dnsmasq
[ 4153.269206] [ 2570]     0  2570     5672      204      15        0             0 openvpn
[ 4153.269208] [ 2605]     0  2605     5669      203      16        0             0 openvpn
[ 4153.269211] [ 2631]     0  2631     5672      204      15        0             0 openvpn
[ 4153.269213] [ 2657]     0  2657     5672      203      16        0             0 openvpn
[ 4153.269215] [ 2673]     0  2673     5672      205      15        0             0 openvpn
[ 4153.269218] [ 2690]     0  2690     5672      207      16        0             0 openvpn
[ 4153.269220] [ 2708]     0  2708     5638      178      16        0             0 openvpn
[ 4153.269222] [ 2733]     0  2733     5669      206      16        0             0 openvpn
[ 4153.269225] [ 2763]     0  2763     5672      208      16        0             0 openvpn
[ 4153.269227] [ 2784]     0  2784     5672      207      16        0             0 openvpn
[ 4153.269230] [ 2958]   111  2958    42230       61      19        0             0 rtkit-daemon
[ 4153.269232] [ 3065]     0  3065    20401      648      44        0             0 apache2
[ 4153.269235] [ 3206]     0  3206    67222     1719      33        0             0 fail2ban-server
[ 4153.269237] [ 3246]     0  3246     3958       41      13        0             0 getty
[ 4153.269240] [ 3632]     0  3632     2561      578       9        0             0 dhclient
[ 4153.269243] [ 3675] 65534  3675     7226       63      19        0             0 dnsmasq
[ 4153.269245] [ 4033]     0  4033    90143      492      43        0             0 udisksd
[ 4153.269248] [ 6118]    33  6118    20279      577      42        0             0 apache2
[ 4153.269251] [ 6122]    33  6122    92642      644      72        0             0 apache2
[ 4153.269253] [ 6123]    33  6123    92642      644      72        0             0 apache2
[ 4153.269256] [ 7392]     0  7392     5436      199      15        0         -1000 udevd
[ 4153.269260] [ 8939]     0  8939    70211    12800     123        0             0 Xorg
[ 4153.269262] [ 9029]     0  9029    41431      220      50        0             0 lightdm
[ 4153.269264] [ 9128]  1000  9128    73124      192      38        0             0 gnome-keyring-d
[ 4153.269267] [ 9138]  1000  9138   105814      690      98        0             0 gnome-session
[ 4153.269269] [ 9190]  1000  9190     3154       80       9        0             0 ssh-agent
[ 4153.269272] [ 9191]  1000  9191     4092       54      12        0             0 gpg-agent
[ 4153.269274] [ 9194]  1000  9194     6117       65      17        0             0 dbus-launch
[ 4153.269277] [ 9195]  1000  9195     6571      472      17        0             0 dbus-daemon
[ 4153.269279] [ 9205]  1000  9205    84354      137      32        0             0 at-spi-bus-laun
[ 4153.269281] [ 9209]  1000  9209     6030      120      17        0             0 dbus-daemon
[ 4153.269284] [ 9212]  1000  9212    31181      150      30        0             0 at-spi2-registr
[ 4153.269286] [ 9230]  1000  9230   205152     1719     167        0             0 gnome-settings-
[ 4153.269289] [ 9233]  1000  9233    90808      598     111        0             0 pulseaudio
[ 4153.269292] [ 9239]  1000  9239    24569      179      47        0             0 gconf-helper
[ 4153.269294] [ 9241]  1000  9241    13472      423      32        0             0 gconfd-2
[ 4153.269296] [ 9243]  1000  9243    48067      151      30        0             0 gvfsd
[ 4153.269299] [ 9247]  1000  9247    84194      141      34        0             0 gvfsd-fuse
[ 4153.269301] [ 9263]  1000  9263   264259    10791     250        0             0 compiz
[ 4153.269303] [ 9269]  1000  9269    44594      201      24        0             0 dconf-service
[ 4153.269305] [ 9276]  1000  9276   165643     4180     169        0             0 blueman-applet
[ 4153.269308] [ 9279]  1000  9279   169464     1549     138        0             0 nm-applet
[ 4153.269310] [ 9280]  1000  9280   238670     4329     217        0             0 nautilus
[ 4153.269312] [ 9281]  1000  9281   121466      617      96        0             0 gnome-fallback-
[ 4153.269315] [ 9282]  1000  9282   135466     3534     126        0             0 indicator-cpufr
[ 4153.269317] [ 9283]  1000  9283   142378    18295     141        0             0 skype
[ 4153.269319] [ 9284]  1000  9284     5065       54      16        0             0 syndaemon
[ 4153.269322] [ 9285]  1000  9285   120883     1019     109        0             0 indicator-multi
[ 4153.269324] [ 9288]  1000  9288   212039     4308     241        0             0 pidgin
[ 4153.269327] [ 9292]  1000  9292    84593      608      91        0             0 polkit-gnome-au
[ 4153.269329] [ 9304]  1000  9304    52477      426      39        0             0 gvfs-udisks2-vo
[ 4153.269332] [ 9312]  1000  9312    70334      154      38        0             0 gvfs-afc-volume
[ 4153.269334] [ 9319]  1000  9319    46798      131      28        0             0 gvfs-mtp-volume
[ 4153.269336] [ 9325]  1000  9325    49839      182      35        0             0 gvfs-gphoto2-vo
[ 4153.269339] [ 9331]  1000  9331   541243    15362     243        0             0 dropbox
[ 4153.269341] [ 9369]  1000  9369    68153      175      34        0             0 gvfsd-trash
[ 4153.269344] [ 9395]  1000  9395    13434      115      30        0             0 obex-data-serve
[ 4153.269346] [ 9416]  1000  9416    87300      609      97        0             0 notify-osd
[ 4153.269349] [ 9423]  1000  9423   125419      740     104        0             0 bamfdaemon
[ 4153.269352] [ 9484]  1000  9484    66501      146      32        0             0 gvfsd-burn
[ 4153.269355] [ 9488]  1000  9488     1111       25       8        0             0 sh
[ 4153.269357] [ 9489]  1000  9489    84483      744      92        0             0 gtk-window-deco
[ 4153.269359] [ 9492]  1000  9492   166134     3518     161        0             0 unity-panel-ser
[ 4153.269362] [ 9494]  1000  9494   172370     1883      47        0             0 hud-service
[ 4153.269364] [ 9514]  1000  9514   118985      360      81        0             0 indicator-bluet
[ 4153.269366] [ 9516]  1000  9516    95283      313      74        0             0 indicator-sync-
[ 4153.269369] [ 9518]  1000  9518   151967      543     114        0             0 indicator-datet
[ 4153.269371] [ 9523]  1000  9523   115774      714     116        0             0 indicator-print
[ 4153.269374] [ 9525]  1000  9525   135487      411      87        0             0 indicator-sessi
[ 4153.269376] [ 9527]  1000  9527   133932      418      78        0             0 indicator-messa
[ 4153.269378] [ 9534]  1000  9534   133075      373      80        0             0 indicator-appli
[ 4153.269381] [ 9535]  1000  9535   144953      509     100        0             0 indicator-sound
[ 4153.269383] [ 9635]  1000  9635   151805     2306     138        0             0 gnome-terminal
[ 4153.269386] [ 9642]  1000  9642   139764     2118      68        0             0 unity-applicati
[ 4153.269388] [ 9644]  1000  9644   167547      365      57        0             0 unity-files-dae
[ 4153.269391] [ 9661]  1000  9661     3709       41      13        0             0 gnome-pty-helpe
[ 4153.269393] [ 9662]  1000  9662     6237     1105      18        0             0 bash
[ 4153.269396] [ 9829]  1000  9829   146945     2246     105        0             0 unity-scope-gdr
[ 4153.269398] [ 9840]  1000  9840     6237     1105      17        0             0 bash
[ 4153.269401] [ 9843]  1000  9843     3493       38      13        0             0 optirun
[ 4153.269403] [ 9844]     0  9844    35523     6859      67        0             0 Xorg
[ 4153.269405] [ 9845]  1000  9845    43951     1981      49        0             0 screenclone
[ 4153.269408] [ 9860]  1000  9860    86292      623      93        0             0 gnome-screensav
[ 4153.269410] [ 9865]  1000  9865   724592    24172     310        0             0 chromium-browse
[ 4153.269413] [ 9871]  1000  9871    81867     1833     123        0             0 chromium-browse
[ 4153.269415] [ 9872]  1000  9872     3708       45      11        0             0 chrome-sandbox
[ 4153.269418] [ 9873]  1000  9873    86530     1711     139        0             0 chromium-browse
[ 4153.269420] [ 9874]     0  9874     5436      199      15        0         -1000 udevd
[ 4153.269423] [ 9878]  1000  9878   104963     1718     118        0             0 chromium-browse
[ 4153.269425] [ 9907]  1000  9907   292116    11200     205        0           300 chromium-browse
[ 4153.269428] [ 9918]  1000  9918   293926    13286     215        0           300 chromium-browse
[ 4153.269430] [ 9924]  1000  9924   287562     6096     191        0           300 chromium-browse
[ 4153.269433] [ 9941]  1000  9941   285277     3527     181        0           300 chromium-browse
[ 4153.269435] [ 9975]  1000  9975   289462     9824     206        0           300 chromium-browse
[ 4153.269438] [ 9982]  1000  9982   285419     3768     182        0           300 chromium-browse
[ 4153.269440] [ 9994]  1000  9994   286039     4968     187        0           300 chromium-browse
[ 4153.269443] [10009]  1000 10009   285297     3561     180        0           300 chromium-browse
[ 4153.269445] [10020]  1000 10020   288356     7152     194        0           300 chromium-browse
[ 4153.269447] [10036]  1000 10036   285329     3694     181        0           300 chromium-browse
[ 4153.269450] [10042]  1000 10042   295582    14686     222        0           300 chromium-browse
[ 4153.269452] [10048]  1000 10048   304408     4847     185        0           300 chromium-browse
[ 4153.269455] [10054]  1000 10054   287456     7668     201        0           300 chromium-browse
[ 4153.269457] [10063]  1000 10063   285511     3861     181        0           300 chromium-browse
[ 4153.269460] [10100]  1000 10100   290115     8803     205        0           300 chromium-browse
[ 4153.269462] [10107]  1000 10107   287209     5890     190        0           300 chromium-browse
[ 4153.269465] [10117]  1000 10117   143002     1878     151        0           100 chromium-browse
[ 4153.269468] [10119]  1000 10119   288513     8254     195        0           300 chromium-browse
[ 4153.269470] [10144]  1000 10144   147206      852     111        0             0 update-notifier
[ 4153.269472] [10214]  1000 10214    91188      201      47        0             0 deja-dup-monito
[ 4153.269476] [10311]  1000 10311     6237     1105      18        0             0 bash
[ 4153.269478] [10511]  1000 10511    69102     1259     115        0             0 vi
[ 4153.269480] [10543]  1000 10543   285919     4047     184        0           300 chromium-browse
[ 4153.269483] [10574]  1000 10574   288083     7169     198        0           300 chromium-browse
[ 4153.269485] [10594]  1000 10594  1499730  1484225    2906        0             0 a.out
[ 4153.269487] Out of memory: Kill process 10594 (a.out) score 765 or sacrifice child
[ 4153.269490] Killed process 10594 (a.out) total-vm:5998920kB, anon-rss:5936892kB, file-rss:8kB
[ 4153.284414] a.out: page allocation failure: order:0, mode:0x280da
[ 4153.284417] Pid: 10594, comm: a.out Tainted: PF          O 3.8.0-34-generic #49-Ubuntu
[ 4153.284418] Call Trace:
[Snip: the usual]
[ 4153.284464] Mem-Info:
[ 4153.284466] Node 0 DMA per-cpu:
[ 4153.284468] CPU    0: hi:    0, btch:   1 usd:   0
[ 4153.284469] CPU    1: hi:    0, btch:   1 usd:   0
[ 4153.284471] CPU    2: hi:    0, btch:   1 usd:   0
[ 4153.284472] CPU    3: hi:    0, btch:   1 usd:   0
[ 4153.284473] Node 0 DMA32 per-cpu:
[ 4153.284475] CPU    0: hi:  186, btch:  31 usd:   0
[ 4153.284476] CPU    1: hi:  186, btch:  31 usd:   0
[ 4153.284478] CPU    2: hi:  186, btch:  31 usd:   0
[ 4153.284479] CPU    3: hi:  186, btch:  31 usd:   0
[ 4153.284480] Node 0 Normal per-cpu:
[ 4153.284481] CPU    0: hi:  186, btch:  31 usd:   0
[ 4153.284483] CPU    1: hi:  186, btch:  31 usd:   0
[ 4153.284484] CPU    2: hi:  186, btch:  31 usd:   0
[ 4153.284485] CPU    3: hi:  186, btch:  31 usd:   0
[ 4153.284489] active_anon:1799974 inactive_anon:59155 isolated_anon:0
[ 4153.284489]  active_file:0 inactive_file:0 isolated_file:0
[ 4153.284489]  unevictable:8 dirty:0 writeback:0 unstable:0
[ 4153.284489]  free:25776 slab_reclaimable:7380 slab_unreclaimable:10392
[ 4153.284489]  mapped:10662 shmem:115550 pagetables:14191 bounce:0
[ 4153.284489]  free_cma:0
[ 4153.284493] Node 0 DMA free:15884kB min:132kB low:164kB high:196kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15644kB managed:15900kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
[ 4153.284498] lowmem_reserve[]: 0 2761 7776 7776
[ 4153.284501] Node 0 DMA32 free:43860kB min:23952kB low:29940kB high:35928kB active_anon:2571536kB inactive_anon:40804kB active_file:4kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:2827940kB managed:2629680kB mlocked:0kB dirty:0kB writeback:0kB mapped:16236kB shmem:40804kB slab_reclaimable:8kB slab_unreclaimable:76kB kernel_stack:0kB pagetables:5032kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[ 4153.284506] lowmem_reserve[]: 0 0 5014 5014
[ 4153.284508] Node 0 Normal free:43360kB min:43496kB low:54368kB high:65244kB active_anon:4628360kB inactive_anon:195816kB active_file:0kB inactive_file:0kB unevictable:32kB isolated(anon):0kB isolated(file):0kB present:5134752kB managed:5085580kB mlocked:32kB dirty:0kB writeback:0kB mapped:26412kB shmem:421396kB slab_reclaimable:29512kB slab_unreclaimable:41476kB kernel_stack:5224kB pagetables:51732kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
[ 4153.284513] lowmem_reserve[]: 0 0 0 0
[ 4153.284516] Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15884kB
[ 4153.284526] Node 0 DMA32: 67*4kB (UEM) 60*8kB (UEM) 14*16kB (UEM) 12*32kB (UEM) 5*64kB (UEM) 2*128kB (E) 3*256kB (UE) 3*512kB (EM) 3*1024kB (EM) 6*2048kB (UE) 6*4096kB (ER) = 44172kB
[ 4153.284537] Node 0 Normal: 257*4kB (UEM) 315*8kB (UEM) 90*16kB (UE) 151*32kB (UEM) 139*64kB (EM) 101*128kB (E) 31*256kB (EM) 0*512kB 0*1024kB 0*2048kB 1*4096kB (R) = 43676kB
[ 4153.284548] 115654 total pagecache pages
[ 4153.284549] 0 pages in swap cache
[ 4153.284551] Swap cache stats: add 0, delete 0, find 0/0
[ 4153.284552] Free swap  = 0kB
[ 4153.284553] Total swap = 0kB
[ 4153.300780] 2057712 pages RAM
[ 4153.300783] 116530 pages reserved
[ 4153.300784] 1123391 pages shared
[ 4153.300785] 1879628 pages non-shared