Question

Minecraft Server gets killed on Ubuntu 20.04 droplet

Posted January 1, 2021 997 views
Ubuntu 20.04

I’m running a Minecraft server with 4Gb of ram, and only a couple of plugins. It’s being randomly killed with no error messaged.
I used this command to start the server, which leaves a bit of excess memory for the os and other things.

java -Xms1024M -Xmx2840M -jar spigot-1.16.4.jar nogui
1 comment
  • java -Xms1024M -Xmx3840M -jar spigot-1.16.4.jar nogui
    

    typo on the original post, I’m using this command, which means the server shouldn’t be able to use excess memory and the server shouldn’t be stopped

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2 answers

Hi there @MapleMeese,

Are there any other services running on the server?

What I could suggest is checking your syslog for some more information on why exactly the process is being killed.

Feel free to share the output of the log here as well.

Regards,
Bobby

Same happened to me yesterday. My server is running Minecraft 1.18 vanilla with 8GB ram with this command:

java -Xms1024M -Xmx7G -jar server.jar nogui

This is from syslog about the same time server stopped:

Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225850] Netty Epoll Ser invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225854] CPU: 1 PID: 85783 Comm: Netty Epoll Ser Not tainted 5.4.0-88-generic #99-Ubuntu
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225855] Hardware name: DigitalOcean Droplet, BIOS 20171212 12/12/2017
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225858] Call Trace:
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225895]  dump_stack+0x6d/0x8b
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225910]  dump_header+0x4f/0x1eb
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225911]  oom_kill_process.cold+0xb/0x10
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225930]  out_of_memory.part.0+0x1df/0x3d0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225932]  out_of_memory+0x6d/0xd0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225941]  __alloc_pages_slowpath+0xd5e/0xe50
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225944]  __alloc_pages_nodemask+0x2d0/0x320
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225949]  alloc_pages_current+0x87/0xe0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225952]  __page_cache_alloc+0x72/0x90
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225954]  pagecache_get_page+0xbf/0x300
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225956]  filemap_fault+0x6b2/0xa50
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225964]  ? unlock_page_memcg+0x12/0x20
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225965]  ? page_add_file_rmap+0xff/0x1a0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225968]  ? xas_load+0xd/0x80
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225970]  ? xas_find+0x17f/0x1c0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225972]  ? filemap_map_pages+0x24c/0x380
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225990]  ext4_filemap_fault+0x32/0x50
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225993]  __do_fault+0x3c/0x130
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225995]  do_fault+0x24b/0x640
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225997]  __handle_mm_fault+0x4c5/0x7a0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.225999]  handle_mm_fault+0xca/0x200
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226005]  do_user_addr_fault+0x1f9/0x450
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226007]  __do_page_fault+0x58/0x90
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226016]  ? exit_to_usermode_loop+0x8f/0x160
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226017]  do_page_fault+0x2c/0xe0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226020]  do_async_page_fault+0x39/0x70
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226025]  async_page_fault+0x34/0x40
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226028] RIP: 0033:0x7f2a329e0570
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226032] Code: Bad RIP value.
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226033] RSP: 002b:00007f29f41ed148 EFLAGS: 00010206
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226034] RAX: 00007f29d54f8600 RBX: 00007f29d54f8600 RCX: 00007f29f41ed188
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226035] RDX: 00007f29f41ed180 RSI: 0000000000000010 RDI: 00007f2a33aacfa8
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226036] RBP: 00007f29f41ed170 R08: 0000000003dff05f R09: 0000000000000000
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226036] R10: 00007f2a1cf853f4 R11: 00007f2a2d0ce000 R12: 00007f29f41ed190
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226037] R13: 00007f29f41ed180 R14: 00007f29f41ed190 R15: 00007f29fc094510
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226039] Mem-Info:
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045] active_anon:1973158 inactive_anon:38 isolated_anon:0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045]  active_file:43 inactive_file:49 isolated_file:0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045]  unevictable:4616 dirty:1 writeback:0 unstable:0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045]  slab_reclaimable:8926 slab_unreclaimable:15001
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045]  mapped:2080 shmem:246 pagetables:4517 bounce:0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226045]  free:25156 free_pcp:721 free_cma:0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226048] Node 0 active_anon:7892632kB inactive_anon:152kB active_file:172kB inactive_file:196kB unevictable:18464kB isolated(anon):0kB isolated(file):0kB mapped:8320kB dirty:4kB writeback:0kB shmem:984kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226048] Node 0 DMA free:15908kB min:132kB low:164kB high:196kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226052] lowmem_reserve[]: 0 3445 7912 7912 7912
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226053] Node 0 DMA32 free:47096kB min:29372kB low:36712kB high:44052kB active_anon:3492128kB inactive_anon:4kB active_file:36kB inactive_file:56kB unevictable:0kB writepending:4kB present:3653612kB managed:3563200kB mlocked:0kB kernel_stack:496kB pagetables:6860kB bounce:0kB free_pcp:1716kB local_pcp:1472kB free_cma:0kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226057] lowmem_reserve[]: 0 0 4466 4466 4466
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226058] Node 0 Normal free:37620kB min:38076kB low:47592kB high:57108kB active_anon:4400156kB inactive_anon:148kB active_file:380kB inactive_file:660kB unevictable:18464kB writepending:0kB present:4718592kB managed:4574176kB mlocked:18464kB kernel_stack:2656kB pagetables:11208kB bounce:0kB free_pcp:1168kB local_pcp:172kB free_cma:0kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226061] lowmem_reserve[]: 0 0 0 0 0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226062] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226069] Node 0 DMA32: 329*4kB (UE) 489*8kB (UE) 541*16kB (UE) 332*32kB (UE) 129*64kB (UME) 34*128kB (UME) 2*256kB (E) 4*512kB (UE) 3*1024kB (UME) 2*2048kB (UM) 0*4096kB = 46844kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226078] Node 0 Normal: 891*4kB (UMEH) 930*8kB (UEH) 401*16kB (UMEH) 282*32kB (UMEH) 101*64kB (UMEH) 36*128kB (UMEH) 1*256kB (H) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 37772kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226087] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226088] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226089] 2392 total pagecache pages
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226090] 0 pages in swap cache
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226091] Swap cache stats: add 0, delete 0, find 0/0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226091] Free swap  = 0kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226092] Total swap = 0kB
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226092] 2097049 pages RAM
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226093] 0 pages HighMem/MovableOnly
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226093] 58728 pages reserved
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226094] 0 pages cma reserved
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226094] 0 pages hwpoisoned
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226094] Tasks state (memory values in pages):
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226095] [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226102] [    351]     0   351    19021     1082   172032        0          -250 systemd-journal
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226104] [    480]     0   480    70034     4485    90112        0         -1000 multipathd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226106] [    516]   102   516    22557      619    81920        0             0 systemd-timesyn
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226108] [    596]   100   596     4634      993    69632        0             0 systemd-network
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226109] [    619]   101   619     6013     1665    90112        0             0 systemd-resolve
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226111] [    643]     0   643     4805      848    65536        0         -1000 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226113] [    768]     0   768     2134      581    53248        0             0 cron
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226114] [    769]   103   769     1945      958    49152        0          -900 dbus-daemon
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226116] [    778]     0   778    20457      684    61440        0             0 irqbalance
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226118] [    780]     0   780     7299     2735    94208        0             0 networkd-dispat
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226120] [    785]     0   785     4404      977    73728        0             0 systemd-logind
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226121] [    787]     0   787    98703     1253   122880        0             0 udisksd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226123] [    788]     0   788      948      528    49152        0             0 atd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226124] [    830]     0   830     1838      441    53248        0             0 agetty
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226126] [    845]     0   845     1457      413    45056        0             0 agetty
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226128] [    853]     0   853    27027     2711   106496        0             0 unattended-upgr
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226129] [    861]     0   861    59106      969    94208        0             0 polkitd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226131] [    890]     0   890     3044      926    65536        0         -1000 sshd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226132] [   1844]     0  1844     4603      578    73728        0             0 systemd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226134] [   1850]     0  1850    26054     1086    94208        0             0 (sd-pam)
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226136] [   4293]     0  4293    60259      276   102400        0             0 accounts-daemon
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226138] [   4767]   104  4767    56087      685    81920        0             0 rsyslogd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226140] [  18135]     0 18135      622      132    45056        0             0 none
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226142] [  21541]     0 21541   325262      595   167936        0          -900 droplet-agent
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226156] [  27028]     0 27028     2251      377    53248        0             0 screen
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226157] [  27029]     0 27029     2240      536    57344        0             0 bash
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226160] [  82699]     0 82699   236710     3874   245760        0          -900 snapd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226161] [  85741]     0 85741  2587941  1953186 16052224        0             0 java
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226164] [  86684]     0 86684     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226165] [  86685]     0 86685     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226169] [  86686]     0 86686     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226171] [  86687]     0 86687     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226172] [  86688]     0 86688     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226174] [  86689]     0 86689     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226175] [  86690]     0 86690     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226176] [  86691]     0 86691     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226178] [  86692]     0 86692     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226180] [  86693]     0 86693     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226181] [  86694]     0 86694     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226182] [  86695]     0 86695     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226184] [  86696]     0 86696     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226185] [  86697]     0 86697     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226186] [  86698]     0 86698     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226188] [  86699]     0 86699     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226189] [  86700]     0 86700     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226190] [  86701]     0 86701     4805      714    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226192] [  86702]     0 86702     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226193] [  86703]     0 86703     4805      703    61440        0             0 systemd-udevd
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226195] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-0.slice/session-35.scope,task=java,pid=85741,uid=0
Dec  9 04:03:48 ubuntu-g-2vcpu-8gb-nyc1-01 kernel: [718731.226254] Out of memory: Killed process 85741 (java) total-vm:10351764kB, anon-rss:7812744kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:15676kB oom_score_adj:0