Unexplained memory leak? Free RAM goes down over time

hopefulhopeful OG
edited May 21 in Help

Hi LowEndHelpDesk, :p

I have a VPS with 2GB of memory. I don't use it a lot, leaving it mostly idle except the IPv6 BGP session (over 6in4) I have with he.net and NetAssist. I don't load the routing table; I just route everything to he.net.

However, I noticed that the memory usage increases slowly over time. I need to hard-reset the VPS every few weeks to restore it. This behaviour started roughly since 2020 started but I haven't made any significant changes to the configuration

Thanks to this beautiful graph from hetrixtools hopefully it explains better:

Memory usage is quite high:

[[email protected] ~]$ free -h
              total        used        free      shared  buff/cache   available
Mem:          2.1Gi       1.6Gi        95Mi       1.0Mi       366Mi       289Mi
Swap:         303Mi        20Mi       283Mi

You can see that there's actually no application actively consuming memory:

[[email protected] ~]$ ps aux
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root           1  0.0  0.3 109744  8264 ?        Ss   May13   5:58 /sbin/init
root           2  0.0  0.0      0     0 ?        S    May13   0:00 [kthreadd]
root           3  0.0  0.0      0     0 ?        I<   May13   0:00 [rcu_gp]
root           4  0.0  0.0      0     0 ?        I<   May13   0:00 [rcu_par_gp]
root           6  0.0  0.0      0     0 ?        I<   May13   0:00 [kworker/0:0H-kblockd]
root           8  0.0  0.0      0     0 ?        I<   May13   0:00 [mm_percpu_wq]
root           9  0.0  0.0      0     0 ?        S    May13   1:39 [ksoftirqd/0]
root          10  0.0  0.0      0     0 ?        S    May13   0:00 [rcuc/0]
root          11  0.0  0.0      0     0 ?        I    May13  11:11 [rcu_preempt]
root          12  0.0  0.0      0     0 ?        S    May13   0:00 [rcub/0]
root          13  0.0  0.0      0     0 ?        S    May13   0:04 [migration/0]
root          14  0.0  0.0      0     0 ?        S    May13   0:00 [idle_inject/0]
root          16  0.0  0.0      0     0 ?        S    May13   0:00 [cpuhp/0]
root          17  0.0  0.0      0     0 ?        S    May13   0:00 [kdevtmpfs]
root          18  0.0  0.0      0     0 ?        I<   May13   0:00 [netns]
root          19  0.0  0.0      0     0 ?        S    May13   0:00 [rcu_tasks_kthre]
root          20  0.0  0.0      0     0 ?        S    May13   0:03 [kauditd]
root          21  0.0  0.0      0     0 ?        S    May13   0:00 [khungtaskd]
root          22  0.0  0.0      0     0 ?        S    May13   0:00 [oom_reaper]
root          23  0.0  0.0      0     0 ?        I<   May13   0:00 [writeback]
root          24  0.0  0.0      0     0 ?        S    May13   0:01 [kcompactd0]
root          25  0.0  0.0      0     0 ?        SN   May13   0:00 [ksmd]
root          26  0.0  0.0      0     0 ?        SN   May13   0:00 [khugepaged]
root         114  0.0  0.0      0     0 ?        I<   May13   0:00 [kintegrityd]
root         115  0.0  0.0      0     0 ?        I<   May13   0:00 [kblockd]
root         116  0.0  0.0      0     0 ?        I<   May13   0:00 [blkcg_punt_bio]
root         117  0.0  0.0      0     0 ?        I<   May13   0:00 [ata_sff]
root         118  0.0  0.0      0     0 ?        I<   May13   0:00 [edac-poller]
root         119  0.0  0.0      0     0 ?        I<   May13   0:00 [devfreq_wq]
root         120  0.0  0.0      0     0 ?        S    May13   0:00 [watchdogd]
root         121  0.0  0.0      0     0 ?        S    May13   4:59 [kswapd0]
root         124  0.0  0.0      0     0 ?        I<   May13   0:00 [kthrotld]
root         125  0.0  0.0      0     0 ?        I<   May13   0:00 [acpi_thermal_pm]
root         126  0.0  0.0      0     0 ?        I<   May13   0:00 [nvme-wq]
root         127  0.0  0.0      0     0 ?        I<   May13   0:00 [nvme-reset-wq]
root         128  0.0  0.0      0     0 ?        I<   May13   0:00 [nvme-delete-wq]
root         129  0.0  0.0      0     0 ?        I<   May13   0:00 [ipv6_addrconf]
root         140  0.0  0.0      0     0 ?        I<   May13   0:00 [kstrp]
root         146  0.0  0.0      0     0 ?        I<   May13   0:00 [zswap-shrink]
root         147  0.0  0.0      0     0 ?        I<   May13   0:00 [kworker/u3:0]
root         158  0.0  0.0      0     0 ?        I<   May13   0:00 [charger_manager]
root         188  0.0  0.0      0     0 ?        S    May13   0:00 [scsi_eh_0]
root         189  0.0  0.0      0     0 ?        I<   May13   0:00 [scsi_tmf_0]
root         190  0.0  0.0      0     0 ?        S    May13   0:00 [scsi_eh_1]
root         191  0.0  0.0      0     0 ?        I<   May13   0:00 [scsi_tmf_1]
root         195  0.0  0.0      0     0 ?        I<   May13   0:15 [kworker/0:1H-kblockd]
root         206  0.0  0.0      0     0 ?        S    May13   0:10 [jbd2/vda2-8]
root         207  0.0  0.0      0     0 ?        I<   May13   0:00 [ext4-rsv-conver]
root         234  0.0  2.2 172832 47940 ?        Ss   May13   3:28 /usr/lib/systemd/systemd-journald
root         242  0.0  0.0  78076   688 ?        Ss   May13   0:00 /usr/bin/lvmetad -f
root         247  0.0  0.2  30940  4732 ?        Ss   May13   0:02 /usr/lib/systemd/systemd-udevd
systemd+     250  0.0  0.2  26260  5208 ?        Ss   May13   0:05 /usr/lib/systemd/systemd-networkd
systemd+     276  0.0  0.1  91784  4276 ?        Ssl  May13   0:03 /usr/lib/systemd/systemd-timesyncd
root         289  0.0  0.0   6588  1968 ?        Ss   May13   0:07 /usr/bin/crond -n
dbus         290  0.0  0.1   6780  2772 ?        Ss   May13   3:35 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation --syslog-only
root         291  0.0  0.2  17504  5660 ?        Ss   May13   1:47 /usr/lib/systemd/systemd-logind
v2ray        294  0.1  0.6 1168500 13268 ?       Ssl  May13  14:52 /usr/bin/v2ray -config /etc/v2ray/0.json
bird         295  0.0  0.0   7156  1268 ?        Ss   May13   2:00 /usr/bin/bird -s /run/bird/bird.ctl
root         296  0.0  0.0   5424  1304 tty1     Ss+  May13   0:00 /sbin/agetty -o -p -- \u --noclear tty1 linux
http         315  0.0  0.5 1255500 12164 ?       Ssl  May13   0:54 /usr/bin/caddy -log stdout -agree -conf /etc/caddy/caddy.conf -root=/usr/share/caddy
root     3555765  0.0  0.0      0     0 ?        I    21:27   0:00 [kworker/0:0-rcu_gp]
root     3566553  0.0  0.0      0     0 ?        I    21:33   0:00 [kworker/u2:1-ext4-rsv-conversion]
root     3567234  0.0  0.0      0     0 ?        I    21:33   0:00 [kworker/0:1-events]
root     3569037  0.0  0.3  10704  7448 ?        Ss   21:34   0:00 sshd: me [priv]
me    3569138  0.0  0.4  18972  9776 ?        Ss   21:34   0:00 /usr/lib/systemd/systemd --user
me    3569140  0.0  0.0 113348  2116 ?        S    21:34   0:00 (sd-pam)
me    3569145  0.0  0.1  10704  4156 ?        S    21:34   0:00 sshd: [email protected]/0
me    3569146  0.0  0.1   7488  4000 pts/0    Ss   21:34   0:00 -bash
root     3577610  0.0  0.0      0     0 ?        I    21:38   0:00 [kworker/u2:0-flush-254:0]
root     3584705  0.1  0.0      0     0 ?        I    21:42   0:00 [kworker/0:2-events]
root     3588276  0.0  0.0      0     0 ?        I    21:44   0:00 [kworker/u2:2-events_unbound]
root     3591768  0.0  0.1   9636  3600 ?        S    21:46   0:00 /usr/bin/CROND -n
hetrixt+ 3591769  0.0  0.1   7144  2860 ?        Ss   21:46   0:00 /bin/sh -c bash /etc/hetrixtools/hetrixtools_agent.sh >> /etc/hetrixtools/hetrixtools_cron.log 2>&1
hetrixt+ 3591770  0.3  0.1   7144  3392 ?        S    21:46   0:00 bash /etc/hetrixtools/hetrixtools_agent.sh
hetrixt+ 3593070  0.0  0.0   7144  1816 ?        S    21:46   0:00 bash /etc/hetrixtools/hetrixtools_agent.sh
hetrixt+ 3593071  0.0  0.0   7972  1184 ?        S    21:46   0:00 vmstat 3 2
hetrixt+ 3593072  0.0  0.0   5340   580 ?        S    21:46   0:00 tail -1
me    3593073  0.0  0.1   9500  3596 pts/0    R+   21:46   0:00 ps aux
[[email protected] ~]$ cat  /proc/meminfo
MemTotal:        2163084 kB
MemFree:          111300 kB
MemAvailable:     302496 kB
Buffers:            5500 kB
Cached:            70908 kB
SwapCached:         1008 kB
Active:            56160 kB
Inactive:          54484 kB
Active(anon):      10912 kB
Inactive(anon):    22148 kB
Active(file):      45248 kB
Inactive(file):    32336 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:        311292 kB
SwapFree:         289952 kB
Dirty:                 8 kB
Writeback:             0 kB
AnonPages:         33544 kB
Mapped:            46160 kB
Shmem:              1624 kB
KReclaimable:     284608 kB
Slab:            1881652 kB
SReclaimable:     284608 kB
SUnreclaim:      1597044 kB
KernelStack:        1520 kB
PageTables:         1616 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     1392832 kB
Committed_AS:     476668 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       10888 kB
VmallocChunk:          0 kB
Percpu:            37680 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
FileHugePages:         0 kB
FilePmdMapped:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
Hugetlb:               0 kB
DirectMap4k:     1665012 kB
DirectMap2M:      563200 kB

Any ideas?

Comments

  • Looks like it's all being eaten by Slab? Which iirc is kernel-related cache. Try slabtop and maybe that can give you some hints, or you can share the output here for someone much smarter than myself to help with. lol

    🍌

  • hopefulhopeful OG
    edited May 21

    Thanks for the pointers! I never realised slab is a thing. Here's the output from slabtop and I will continue Googling tomorrow:

    $slabtop
     Active / Total Objects (% used)    : 14075841 / 14088832 (99.9%)
     Active / Total Slabs (% used)      : 332194 / 332194 (100.0%)
     Active / Total Caches (% used)     : 94 / 129 (72.9%)
     Active / Total Size (% used)       : 1835557.66K / 1838777.06K (99.8%)
     Minimum / Average / Maximum Object : 0.01K / 0.13K / 8.00K
    
      OBJS ACTIVE  USE OBJ SIZE  SLABS OBJ/SLAB CACHE SIZE NAME                   
    4723200 4723200 100%    0.01K   9225      512     36900K kmalloc-8
    2095170 2094988  99%    0.19K  99770       21    399080K cred_jar
    1584128 1584128 100%    0.03K  12376      128     49504K kmalloc-32
    1498624 1498324  99%    0.06K  23416       64     93664K anon_vma_chain
    749248 749248 100%    0.09K  16288       46     65152K anon_vma
    577376 577376 100%    0.12K  18043       32     72172K kernfs_node_cache
    402400 402050  99%    0.25K  25150       16    100600K filp
    296960 296960 100%    0.12K   9280       32     37120K pid
    251538 251538 100%    0.09K   5989       42     23956K kmalloc-96
    214336 214336 100%    0.06K   3349       64     13396K kmem_cache_node
    214290 214290 100%    0.44K  23810        9     95240K kmem_cache
    214284 211399  98%    0.19K  10204       21     40816K dentry
    181760 181760 100%    0.02K    710      256      2840K kmalloc-16
    177308 177308 100%    0.81K   9332       19    149312K sock_inode_cache
    148304 148256  99%    0.25K   9269       16     37076K skbuff_head_cache
    138630 138630 100%    1.06K   9242       15    147872K mm_struct
    135808 135808 100%    0.06K   2122       64      8488K kmalloc-64
    131911 131331  99%    0.60K  10147       13     81176K inode_cache
     74552  74552 100%    1.00K   9319        8     74552K PING
     71076  71050  99%    1.00K   8885        8     71080K kmalloc-1k
     46968  46968 100%    4.00K   5871        8    187872K kmalloc-4k
     32384  32384 100%    0.50K   4048        8     16192K kmalloc-512
     22197  22197 100%    0.19K   1057       21      4228K kmalloc-192
     19312  19312 100%    0.25K   1207       16      4828K kmalloc-256
     15639   8516  54%    0.10K    401       39      1604K buffer_head
     15246  15105  99%    0.57K   1089       14      8712K radix_tree_node
      9856   9856 100%    0.12K    308       32      1232K kmalloc-128
      9768   9752  99%    2.00K   1221        8     19536K kmalloc-2k
      9435   9435 100%    0.08K    185       51       740K Acpi-State
      4080   4080 100%    0.05K     48       85       192K ftrace_event_field
      2651   2174  82%    1.07K     95       29      3040K ext4_inode_cache
      2142   1836  85%    0.04K     21      102        84K ext4_extent_status
      1725   1556  90%    0.67K     75       23      1200K proc_inode_cache
      1568   1568 100%    0.07K     28       56       112K eventpoll_pwq
      1426   1426 100%    0.09K     31       46       124K trace_event_file
      1280   1280 100%    0.06K     20       64        80K vmap_area
      1120   1120 100%    0.07K     20       56        80K Acpi-Operand
      1116   1116 100%    0.11K     31       36       124K khugepaged_mm_slot
      1034   1016  98%    0.71K     94       11       752K shmem_inode_cache
       969    969 100%    0.08K     19       51        76K task_delay_info
       816    816 100%    0.04K      8      102        32K pde_opener
       714    546  76%    0.09K     17       42        68K kmalloc-rcl-96
       660    660 100%    0.31K     55       12       220K mnt_cache
       640    588  91%    0.06K     10       64        40K kmalloc-rcl-64
       510    510 100%    0.12K     15       34        60K jbd2_journal_head
       504    504 100%    0.19K     24       21        96K skbuff_ext_cache
    
    [[email protected] ~]$ sudo smem -tw
    Area                           Used      Cache   Noncache 
    firmware/hardware                 0          0          0 
    kernel image                      0          0          0 
    kernel dynamic memory       2018832     357292    1661540 
    userspace memory              59244      33928      25316 
    free memory                   85008      85008          0 
    ----------------------------------------------------------
                                2163084     476228    1686856 
    
    [[email protected] ~]$ df -i
    Filesystem     Inodes  IUsed  IFree IUse% Mounted on
    dev            268304    343 267961    1% /dev
    run            270385    438 269947    1% /run
    /dev/vda2      636480 462678 173802   73% /
    tmpfs          270385      1 270384    1% /dev/shm
    tmpfs          270385     18 270367    1% /sys/fs/cgroup
    tmpfs          270385     17 270368    1% /tmp
    tmpfs          270385     22 270363    1% /run/user/1000
    
  • mikhomikho Hosting ProviderOG

    What does cat /proc/slabinfo give?

    Get 4 or more NAT servers (mix/match between packages) and get a 20 % recurring discount. https://clients.mrvm.net

  • V2ray and caddy in-memory cache?

  • What is cred_jar under slabinfo? I have to reboot my box every week, otherwise the box will become unresponsive after 8 or 9 days.

    [[email protected] ~]$ sudo cat /proc/slabinfo && cat /proc/meminfo && free -h
    slabinfo - version: 2.1
    # name            <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : tunables <limit> <batchcount> <sharedfactor> : slabdata <active_slabs> <num_slabs> <sharedavail>
    ext4_groupinfo_4k     84     84    144   28    1 : tunables    0    0    0 : slabdata      3      3      0
    ext4_inode_cache    4919  11687   1096   29    8 : tunables    0    0    0 : slabdata    403    403      0
    ext4_system_zone     102    102     40  102    1 : tunables    0    0    0 : slabdata      1      1      0
    ext4_io_end           64     64     64   64    1 : tunables    0    0    0 : slabdata      1      1      0
    ext4_extent_status   3278   3876     40  102    1 : tunables    0    0    0 : slabdata     38     38      0
    jbd2_journal_handle    438    438     56   73    1 : tunables    0    0    0 : slabdata      6      6      0
    jbd2_journal_head    748    918    120   34    1 : tunables    0    0    0 : slabdata     27     27      0
    jbd2_revoke_table_s    256    256     16  256    1 : tunables    0    0    0 : slabdata      1      1      0
    jbd2_revoke_record_s    128    128     32  128    1 : tunables    0    0    0 : slabdata      1      1      0
    scsi_sense_cache      32     32    128   32    1 : tunables    0    0    0 : slabdata      1      1      0
    fsverity_info          0      0    256   16    1 : tunables    0    0    0 : slabdata      0      0      0
    fscrypt_info          32     32    128   32    1 : tunables    0    0    0 : slabdata      1      1      0
    MPTCPv6                0      0   1664   19    8 : tunables    0    0    0 : slabdata      0      0      0
    ip6-frags              0      0    184   22    1 : tunables    0    0    0 : slabdata      0      0      0
    PINGv6                 0      0   1216   13    4 : tunables    0    0    0 : slabdata      0      0      0
    RAWv6                 13     13   1216   13    4 : tunables    0    0    0 : slabdata      1      1      0
    UDPv6                240    240   1344   12    4 : tunables    0    0    0 : slabdata     20     20      0
    tw_sock_TCPv6         32     32    248   16    1 : tunables    0    0    0 : slabdata      2      2      0
    request_sock_TCPv6     13     13    304   13    1 : tunables    0    0    0 : slabdata      1      1      0
    TCPv6                247    247   2432   13    8 : tunables    0    0    0 : slabdata     19     19      0
    bfq_io_cq              0      0    160   25    1 : tunables    0    0    0 : slabdata      0      0      0
    mqueue_inode_cache      8      8    960    8    2 : tunables    0    0    0 : slabdata      1      1      0
    dnotify_struct         0      0     32  128    1 : tunables    0    0    0 : slabdata      0      0      0
    pid_namespace          0      0    208   19    1 : tunables    0    0    0 : slabdata      0      0      0
    ip4-frags              0      0    200   20    1 : tunables    0    0    0 : slabdata      0      0      0
    MPTCP                  0      0   1472   11    4 : tunables    0    0    0 : slabdata      0      0      0
    request_sock_subflow      0      0    344   23    2 : tunables    0    0    0 : slabdata      0      0      0
    xfrm_state             0      0    768   10    2 : tunables    0    0    0 : slabdata      0      0      0
    PING               70000  70000   1024    8    2 : tunables    0    0    0 : slabdata   8750   8750      0
    RAW                    8      8   1024    8    2 : tunables    0    0    0 : slabdata      1      1      0
    UDP                   98     98   1152   14    4 : tunables    0    0    0 : slabdata      7      7      0
    tw_sock_TCP           16     16    248   16    1 : tunables    0    0    0 : slabdata      1      1      0
    request_sock_TCP      39     39    304   13    1 : tunables    0    0    0 : slabdata      3      3      0
    TCP                   42     42   2304   14    8 : tunables    0    0    0 : slabdata      3      3      0
    hugetlbfs_inode_cache     12     12    640   12    2 : tunables    0    0    0 : slabdata      1      1      0
    dquot                 48     48    256   16    1 : tunables    0    0    0 : slabdata      3      3      0
    eventpoll_pwq       1288   1288     72   56    1 : tunables    0    0    0 : slabdata     23     23      0
    dax_cache             10     10    768   10    2 : tunables    0    0    0 : slabdata      1      1      0
    request_queue         15     15   2104   15    8 : tunables    0    0    0 : slabdata      1      1      0
    biovec-max            78    112   4096    8    8 : tunables    0    0    0 : slabdata     14     14      0
    biovec-128             8      8   2048    8    4 : tunables    0    0    0 : slabdata      1      1      0
    biovec-64              8      8   1024    8    2 : tunables    0    0    0 : slabdata      1      1      0
    khugepaged_mm_slot   1044   1044    112   36    1 : tunables    0    0    0 : slabdata     29     29      0
    user_namespace         0      0    536   15    2 : tunables    0    0    0 : slabdata      0      0      0
    dmaengine-unmap-256     15     15   2112   15    8 : tunables    0    0    0 : slabdata      1      1      0
    dmaengine-unmap-128     15     15   1088   15    4 : tunables    0    0    0 : slabdata      1      1      0
    sock_inode_cache  166478 166478    832   19    4 : tunables    0    0    0 : slabdata   8762   8762      0
    skbuff_ext_cache     420    420    192   21    1 : tunables    0    0    0 : slabdata     20     20      0
    skbuff_fclone_cache     48     48    512    8    1 : tunables    0    0    0 : slabdata      6      6      0
    skbuff_head_cache 139488 139488    256   16    1 : tunables    0    0    0 : slabdata   8718   8718      0
    file_lock_cache       36     36    216   18    1 : tunables    0    0    0 : slabdata      2      2      0
    file_lock_ctx        146    146     56   73    1 : tunables    0    0    0 : slabdata      2      2      0
    fsnotify_mark_connector    128    128     32  128    1 : tunables    0    0    0 : slabdata      1      1      0
    net_namespace          0      0   4928    6    8 : tunables    0    0    0 : slabdata      0      0      0
    task_delay_info      765    765     80   51    1 : tunables    0    0    0 : slabdata     15     15      0
    taskstats             11     11    352   11    1 : tunables    0    0    0 : slabdata      1      1      0
    proc_dir_entry       357    357    192   21    1 : tunables    0    0    0 : slabdata     17     17      0
    pde_opener           612    612     40  102    1 : tunables    0    0    0 : slabdata      6      6      0
    proc_inode_cache    1610   1702    688   23    4 : tunables    0    0    0 : slabdata     74     74      0
    bdev_cache            19     19    832   19    4 : tunables    0    0    0 : slabdata      1      1      0
    shmem_inode_cache   1029   1034    728   11    2 : tunables    0    0    0 : slabdata     94     94      0
    kernfs_node_cache 541632 541632    128   32    1 : tunables    0    0    0 : slabdata  16926  16926      0
    mnt_cache            708    708    320   12    1 : tunables    0    0    0 : slabdata     59     59      0
    filp              378420 378656    256   16    1 : tunables    0    0    0 : slabdata  23666  23666      0
    inode_cache       122986 123487    616   13    2 : tunables    0    0    0 : slabdata   9499   9499      0
    dentry            198930 205359    192   21    1 : tunables    0    0    0 : slabdata   9779   9779      0
    names_cache           16     16   4096    8    8 : tunables    0    0    0 : slabdata      2      2      0
    buffer_head        15458  20865    104   39    1 : tunables    0    0    0 : slabdata    535    535      0
    uts_namespace          9      9    440    9    1 : tunables    0    0    0 : slabdata      1      1      0
    mm_struct         129135 129135   1088   15    4 : tunables    0    0    0 : slabdata   8609   8609      0
    files_cache          121    121    704   11    2 : tunables    0    0    0 : slabdata     11     11      0
    signal_cache         255    255   1088   15    4 : tunables    0    0    0 : slabdata     17     17      0
    sighand_cache        195    195   2112   15    8 : tunables    0    0    0 : slabdata     13     13      0
    task_struct          138    164   7424    4    8 : tunables    0    0    0 : slabdata     41     41      0
    cred_jar          2030693 2030931    192   21    1 : tunables    0    0    0 : slabdata  96711  96711      0
    anon_vma_chain    1407381 1407872     64   64    1 : tunables    0    0    0 : slabdata  21998  21998      0
    anon_vma          696072 696072     88   46    1 : tunables    0    0    0 : slabdata  15132  15132      0
    pid               276544 276544    128   32    1 : tunables    0    0    0 : slabdata   8642   8642      0
    Acpi-Operand        1120   1120     72   56    1 : tunables    0    0    0 : slabdata     20     20      0
    Acpi-ParseExt         39     39    104   39    1 : tunables    0    0    0 : slabdata      1      1      0
    Acpi-State          8823   8823     80   51    1 : tunables    0    0    0 : slabdata    173    173      0
    numa_policy          170    170     24  170    1 : tunables    0    0    0 : slabdata      1      1      0
    trace_event_file    1426   1426     88   46    1 : tunables    0    0    0 : slabdata     31     31      0
    ftrace_event_field   4080   4080     48   85    1 : tunables    0    0    0 : slabdata     48     48      0
    pool_workqueue       128    128    256   16    1 : tunables    0    0    0 : slabdata      8      8      0
    radix_tree_node    15189  15624    584   14    2 : tunables    0    0    0 : slabdata   1116   1116      0
    task_group            36     36    640   12    2 : tunables    0    0    0 : slabdata      3      3      0
    vmap_area           1216   1216     64   64    1 : tunables    0    0    0 : slabdata     19     19      0
    dma-kmalloc-8k         0      0   8192    4    8 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-4k         0      0   4096    8    8 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-2k         0      0   2048    8    4 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-1k         0      0   1024    8    2 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-512        8      8    512    8    1 : tunables    0    0    0 : slabdata      1      1      0
    dma-kmalloc-256        0      0    256   16    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-128        0      0    128   32    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-64         0      0     64   64    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-32         0      0     32  128    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-16         0      0     16  256    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-8          0      0      8  512    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-192        0      0    192   21    1 : tunables    0    0    0 : slabdata      0      0      0
    dma-kmalloc-96         0      0     96   42    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-8k         0      0   8192    4    8 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-4k         0      0   4096    8    8 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-2k         0      0   2048    8    4 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-1k         0      0   1024    8    2 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-512        0      0    512    8    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-256        0      0    256   16    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-192        0      0    192   21    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-128       96     96    128   32    1 : tunables    0    0    0 : slabdata      3      3      0
    kmalloc-rcl-96      1988   2184     96   42    1 : tunables    0    0    0 : slabdata     52     52      0
    kmalloc-rcl-64      1145   2048     64   64    1 : tunables    0    0    0 : slabdata     32     32      0
    kmalloc-rcl-32         0      0     32  128    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-16         0      0     16  256    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-rcl-8          0      0      8  512    1 : tunables    0    0    0 : slabdata      0      0      0
    kmalloc-8k            35     56   8192    4    8 : tunables    0    0    0 : slabdata     14     14      0
    kmalloc-4k         43968  43968   4096    8    8 : tunables    0    0    0 : slabdata   5496   5496      0
    kmalloc-2k          9165   9176   2048    8    4 : tunables    0    0    0 : slabdata   1147   1147      0
    kmalloc-1k         64640  64640   1024    8    2 : tunables    0    0    0 : slabdata   8080   8080      0
    kmalloc-512        32608  32608    512    8    1 : tunables    0    0    0 : slabdata   4076   4076      0
    kmalloc-256        18192  18192    256   16    1 : tunables    0    0    0 : slabdata   1137   1137      0
    kmalloc-192        20643  20643    192   21    1 : tunables    0    0    0 : slabdata    983    983      0
    kmalloc-128         9280   9280    128   32    1 : tunables    0    0    0 : slabdata    290    290      0
    kmalloc-96        236292 236292     96   42    1 : tunables    0    0    0 : slabdata   5626   5626      0
    kmalloc-64        127570 127872     64   64    1 : tunables    0    0    0 : slabdata   1998   1998      0
    kmalloc-32        1585408 1585408     32  128    1 : tunables    0    0    0 : slabdata  12386  12386      0
    kmalloc-16        170752 170752     16  256    1 : tunables    0    0    0 : slabdata    667    667      0
    kmalloc-8         4296704 4296704      8  512    1 : tunables    0    0    0 : slabdata   8392   8392      0
    kmem_cache_node   201344 201344     64   64    1 : tunables    0    0    0 : slabdata   3146   3146      0
    kmem_cache        201330 201330    448    9    1 : tunables    0    0    0 : slabdata  22370  22370      0
    MemTotal:        2163104 kB
    MemFree:          133316 kB
    MemAvailable:     346344 kB
    Buffers:           17868 kB
    Cached:            99716 kB
    SwapCached:          264 kB
    Active:            84384 kB
    Inactive:          90608 kB
    Active(anon):      18548 kB
    Inactive(anon):    36044 kB
    Active(file):      65836 kB
    Inactive(file):    54564 kB
    Unevictable:           0 kB
    Mlocked:               0 kB
    SwapTotal:        311292 kB
    SwapFree:         310768 kB
    Dirty:               816 kB
    Writeback:             0 kB
    AnonPages:         57180 kB
    Mapped:            69860 kB
    Shmem:              1796 kB
    KReclaimable:     281144 kB
    Slab:            1796448 kB
    SReclaimable:     281144 kB
    SUnreclaim:      1515304 kB
    KernelStack:        1568 kB
    PageTables:         1912 kB
    NFS_Unstable:          0 kB
    Bounce:                0 kB
    WritebackTmp:          0 kB
    CommitLimit:     1392844 kB
    Committed_AS:     462684 kB
    VmallocTotal:   34359738367 kB
    VmallocUsed:       10832 kB
    VmallocChunk:          0 kB
    Percpu:            35412 kB
    HardwareCorrupted:     0 kB
    AnonHugePages:         0 kB
    ShmemHugePages:        0 kB
    ShmemPmdMapped:        0 kB
    FileHugePages:         0 kB
    FilePmdMapped:         0 kB
    HugePages_Total:       0
    HugePages_Free:        0
    HugePages_Rsvd:        0
    HugePages_Surp:        0
    Hugepagesize:       2048 kB
    Hugetlb:               0 kB
    DirectMap4k:     1638388 kB
    DirectMap2M:      589824 kB
                  total        used        free      shared  buff/cache   available
    Mem:          2.1Gi       1.6Gi       130Mi       1.0Mi       389Mi       338Mi
    Swap:         303Mi       0.0Ki       303Mi
    
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