Loki: fatal error: runtime: out of memor

[hellojukay]

when query in grafana

run in docker , using demo docker-copose.yml

version: "3"

networks:
  loki:

services:
  loki:
    image: grafana/loki:master
    ports:
      - "3100:3100"
    command: -config.file=/etc/loki/local-config.yaml
    networks:
      - loki

  grafana:
    image: grafana/grafana:master
    ports:
      - "3000:3000"
    environment:
      GF_EXPLORE_ENABLED: "true"
    networks:
      - loki

promtail docker-compose.yml

version: "3"

networks:
  loki:
services:
  promtail:
    image: grafana/promtail:master
    container_name: tail
    volumes:
      - /data/nspm:/data/nspm
      - ./docker-config.yaml:/etc/promtail/docker-config.yaml
    command:
      -config.file=/etc/promtail/docker-config.yaml
    networks:
      - loki

docker-config.yaml

server:
  http_listen_port: 0
  grpc_listen_port: 0

positions:
  filename: /tmp/positions.yaml

client:
  url: http://worksite.snc.360es.cn:3100/api/prom/push

scrape_configs:
- job_name: system
  entry_parser: raw
  static_configs:
  - targets:
      - localhost
    labels:
      job: logs
      appname: nspm-gateway
      __path__: /data/nspm/nspm-gateway

error log

level=info ts=2018-12-29T08:15:16.326097187Z caller=lifecycler.go:290 msg="auto-joining cluster after timeout"
level=warn ts=2018-12-29T08:15:16.46305657Z caller=gokit.go:43 msg="POST /api/prom/push (500) 316.146µs Response: \"empty ring\\n\" ws: false; Accept-Encoding: gzip; Content-Length: 3603; Con
tent-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; "
ts=2018-12-29T08:16:45.564717815Z caller=spanlogger.go:36 org_id=fake method=SeriesStore.Get level=error msg=lookupChunksBySeries err="invalid chunk time range value: 656432313632626636653a31
363766616439306437393a31363766616439306437393a343931303839643700330066616b653a6431373839343a667544663954693452"
level=warn ts=2018-12-29T08:16:50.026345336Z caller=gokit.go:43 msg="POST /api/prom/push (500) 5.003725029s Response: \"rpc error: code = DeadlineExceeded desc = context deadline exceeded\\n\
" ws: false; Accept-Encoding: gzip; Content-Length: 21234; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; "
fatal error: runtime: out of memory

runtime stack:
runtime.throw(0x117f073, 0x16)
        /usr/local/go/src/runtime/panic.go:608 +0x72
runtime.sysMap(0xc174000000, 0x5c000000, 0x1c78818)
        /usr/local/go/src/runtime/mem_linux.go:156 +0xc7
runtime.(*mheap).sysAlloc(0x1c5f000, 0x5c000000, 0x80008c7378, 0xc0005a9e30)
        /usr/local/go/src/runtime/malloc.go:619 +0x1c7
runtime.(*mheap).grow(0x1c5f000, 0x2df77, 0x0)
        /usr/local/go/src/runtime/mheap.go:920 +0x42
runtime.(*mheap).allocSpanLocked(0x1c5f000, 0x2df77, 0x1c78828, 0x0)
        /usr/local/go/src/runtime/mheap.go:848 +0x337
runtime.(*mheap).alloc_m(0x1c5f000, 0x2df77, 0xffffffffffff0101, 0xc0005a9f10)
        /usr/local/go/src/runtime/mheap.go:692 +0x119
runtime.(*mheap).alloc.func1()
        /usr/local/go/src/runtime/mheap.go:759 +0x4c
runtime.(*mheap).alloc(0x1c5f000, 0x2df77, 0xc000000101, 0x424fd0)
        /usr/local/go/src/runtime/mheap.go:758 +0x8a
runtime.largeAlloc(0x5beee000, 0x450100, 0xc052540000)
        /usr/local/go/src/runtime/malloc.go:1019 +0x97
runtime.mallocgc.func1()
        /usr/local/go/src/runtime/malloc.go:914 +0x46
runtime.systemstack(0x1)
        /usr/local/go/src/runtime/asm_amd64.s:351 +0x66
runtime.mstart()
        /usr/local/go/src/runtime/proc.go:1229

[hellojukay]

level=warn ts=2018-12-29T08:14:43.869457718Z caller=gokit.go:46 method=/logproto.Pusher/Push duration=148.948µs request="&PushRequest{Streams:[&Stream{Labels:{__filename__=\"/data/nspm/nspm-gateway/gateway-2018-12-30.log\", appname=\"nspm-gateway\", job=\"logs\"},Entries:[{2018-12-29 08:14:42.819230203 +0000 UTC 2018-12-29 16:14:42.813 [RxNewThreadScheduler-6] INFO  cn.b360.irp.device.data.producer.service.DeviceDataSyncService.[addDeviceData] Line: 115 - Add device data.[deviceId=UviiQnYz6ve2Jn2EF3FbIzai, version=1]} {2018-12-29 08:14:42.819235307 +0000 UTC 2018-12-29 16:14:42.813 [RxNewThreadScheduler-6] INFO  cn.b360.irp.device.data.producer.service.DeviceDataSyncService.[saveAllData] Line: 70 - Device[UviiQnYz6ve2Jn2EF3FbIzai] is unlocked[java.util.concurrent.locks.ReentrantLock@6c8577d4[Unlocked]].}],}],}" err="Entry out of order" msg="gRPC\n"
level=warn ts=2018-12-29T08:14:43.869911357Z caller=gokit.go:43 msg="POST /api/prom/push (500) 1.784836ms Response: \"rpc error: code = Unknown desc = Entry out of order\\n\" ws: false; Accept-Encoding: gzip; Content-Length: 421; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; "
level=info ts=2018-12-29T08:15:16.317227949Z caller=loki.go:121 msg=initialising module=store
level=info ts=2018-12-29T08:15:16.317346632Z caller=override.go:33 msg="per-tenant overides disabled"
level=info ts=2018-12-29T08:15:16.31765739Z caller=loki.go:121 msg=initialising module=server
level=info ts=2018-12-29T08:15:16.324060523Z caller=gokit.go:36 http=[::]:3100 grpc=[::]:9095 msg="server listening on addresses"
level=info ts=2018-12-29T08:15:16.324655604Z caller=loki.go:121 msg=initialising module=ring
level=info ts=2018-12-29T08:15:16.324831791Z caller=loki.go:121 msg=initialising module=querier
level=error ts=2018-12-29T08:15:16.325277072Z caller=consul_client.go:182 msg="error getting path" key=ring err=null
level=info ts=2018-12-29T08:15:16.32549133Z caller=loki.go:121 msg=initialising module=ingester
level=info ts=2018-12-29T08:15:16.325638937Z caller=loki.go:121 msg=initialising module=distributor
level=info ts=2018-12-29T08:15:16.325698536Z caller=loki.go:121 msg=initialising module=all
level=info ts=2018-12-29T08:15:16.325726742Z caller=main.go:45 msg="Starting Loki" version="(version=master-29cbd06, branch=master, revision=29cbd06)"
level=info ts=2018-12-29T08:15:16.32577048Z caller=lifecycler.go:360 msg="entry not found in ring, adding with no tokens"
level=info ts=2018-12-29T08:15:16.326097187Z caller=lifecycler.go:290 msg="auto-joining cluster after timeout"
level=warn ts=2018-12-29T08:15:16.46305657Z caller=gokit.go:43 msg="POST /api/prom/push (500) 316.146µs Response: \"empty ring\\n\" ws: false; Accept-Encoding: gzip; Content-Length: 3603; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; "
ts=2018-12-29T08:16:45.564717815Z caller=spanlogger.go:36 org_id=fake method=SeriesStore.Get level=error msg=lookupChunksBySeries err="invalid chunk time range value: 656432313632626636653a31363766616439306437393a31363766616439306437393a343931303839643700330066616b653a6431373839343a667544663954693452"
level=warn ts=2018-12-29T08:16:50.026345336Z caller=gokit.go:43 msg="POST /api/prom/push (500) 5.003725029s Response: \"rpc error: code = DeadlineExceeded desc = context deadline exceeded\\n\" ws: false; Accept-Encoding: gzip; Content-Length: 21234; Content-Type: application/x-protobuf; User-Agent: Go-http-client/1.1; "
fatal error: runtime: out of memory

[daixiang0]

invalid chunk time range seems the problem

[hellojukay]

Memory usage continues to grow

[tomwilkie]

I believe this is fixed now (see #209)

[cdyue]

I use the docker image which is created on 2/16, still have this problem.

[dovreshef]

I'm also having this problem. Using latest docker image.
It happens for specific queries constantly, no matter how small a time range.

[billimek]

For what it's worth, I'm not seeing any memory issues running grafana/loki:latest using these helm chart values:

[dovreshef]

In my case it is caused by specific queries in Grafana. If i'd want to debug it further, where should I start to lok at, in the code?

[daixiang0]

you can run loki and then use logcli to query.

[leonallen22]

I'm running into this as well. It seems that certain queries initiate the crash, but not always. It seems that the queries can sometimes be safely run a little while after a redeploy. And running the same query via logcli doesn't appear to trigger the OOM error, but running it via Grafana: Explore does.

[leonallen22]

I was just able to reproduce using logcli:

2019/05/10 09:21:03 Query failed: Get http://172.25.4.213:3100/api/prom/query?query=%7Bjob%3D%22mcServiceLogs%22%7D&limit=100&start=1557494449382939814&end=1557498049382939814&direction=BACKWARD&regexp=: EOF

[leonallen22]

Snippet of kern.log in case that's useful - basically just a long list of loki invoking oom-killer until it finally gets killed itself:

May 10 14:48:19 ip-172-25-4-213 kernel: [4219389.089984] loki invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.089986] loki cpuset=/ mems_allowed=0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.089992] CPU: 3 PID: 23337 Comm: loki Not tainted 4.15.0-1021-aws #21-Ubuntu
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.089993] Hardware name: Amazon EC2 t3.xlarge/, BIOS 1.0 10/16/2017
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.089994] Call Trace:
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090002]  dump_stack+0x63/0x8b
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090007]  dump_header+0x71/0x285
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090009]  oom_kill_process+0x220/0x440
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090011]  out_of_memory+0x2d1/0x4f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090013]  __alloc_pages_slowpath+0xa90/0xe50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090018]  ? alloc_pages_current+0x6a/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090020]  __alloc_pages_nodemask+0x263/0x280
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090022]  alloc_pages_current+0x6a/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090024]  __page_cache_alloc+0x81/0xa0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090026]  filemap_fault+0x378/0x6f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090028]  ? filemap_map_pages+0x181/0x390
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090032]  ext4_filemap_fault+0x31/0x44
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090036]  __do_fault+0x24/0xf0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090037]  handle_pte_fault+0x883/0xd30
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090041]  ? __hrtimer_init+0xc0/0xc0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090043]  __handle_mm_fault+0x478/0x5c0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090045]  handle_mm_fault+0xb1/0x1f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090049]  __do_page_fault+0x250/0x4d0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090051]  do_page_fault+0x2e/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090056]  ? async_page_fault+0x2f/0x50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090059]  do_async_page_fault+0x51/0x80
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090061]  async_page_fault+0x45/0x50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090063] RIP: 0033:0x45d553
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090064] RSP: 002b:00007f7f9cff8d40 EFLAGS: 00010206
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090066] RAX: ffffffffffffff92 RBX: 00000000000186a0 RCX: 000000000045d553
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090067] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001bcecc8
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090068] RBP: 00007f7f9cff8d88 R08: 0000000000000000 R09: 0000000000000000
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090069] R10: 00007f7f9cff8d78 R11: 0000000000000206 R12: 00000000004a9d32
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090070] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090072] Mem-Info:
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076] active_anon:3968517 inactive_anon:20 isolated_anon:0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076]  active_file:77 inactive_file:55 isolated_file:0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076]  unevictable:1352 dirty:0 writeback:0 unstable:0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076]  slab_reclaimable:11882 slab_unreclaimable:15781
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076]  mapped:1067 shmem:216 pagetables:9079 bounce:0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090076]  free:33517 free_pcp:90 free_cma:0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090079] Node 0 active_anon:15874068kB inactive_anon:80kB active_file:308kB inactive_file:220kB unevictable:5408kB iso
lated(anon):0kB isolated(file):0kB mapped:4268kB dirty:0kB writeback:0kB shmem:864kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0
kB all_unreclaimable? no
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090080] Node 0 DMA free:15908kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:0kB active_file:0kB inactiv
e_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
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090084] lowmem_reserve[]: 0 2972 15815 15815 15815
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090088] Node 0 DMA32 free:63744kB min:12688kB low:15860kB high:19032kB active_anon:2993692kB inactive_anon:0kB active
_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129320kB managed:3063752kB mlocked:0kB kernel_stack:16kB pagetables:5952kB bounce:0kB free_pcp:0
kB local_pcp:0kB free_cma:0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090091] lowmem_reserve[]: 0 0 12843 12843 12843
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090095] Node 0 Normal free:54416kB min:54824kB low:68528kB high:82232kB active_anon:12879928kB inactive_anon:80kB act
ive_file:408kB inactive_file:108kB unevictable:5408kB writepending:0kB present:13438976kB managed:13155868kB mlocked:5408kB kernel_stack:5168kB pagetables:30364kB bou
nce:0kB free_pcp:360kB local_pcp:0kB free_cma:0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090099] lowmem_reserve[]: 0 0 0 0 0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090102] 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*2048k
B (M) 3*4096kB (M) = 15908kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090115] Node 0 DMA32: 11*4kB (UM) 6*8kB (UM) 5*16kB (UM) 4*32kB (UM) 4*64kB (UM) 2*128kB (UM) 1*256kB (U) 1*512kB (U)
 1*1024kB (U) 0*2048kB 15*4096kB (ME) = 64044kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090129] Node 0 Normal: 639*4kB (UEH) 503*8kB (UEH) 492*16kB (UMEH) 457*32kB (UEH) 175*64kB (UEH) 60*128kB (UME) 12*25
6kB (UE) 8*512kB (UME) 0*1024kB 0*2048kB 0*4096kB = 55124kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090257] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090258] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090258] 1300 total pagecache pages
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090259] 0 pages in swap cache
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090260] Swap cache stats: add 0, delete 0, find 0/0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090261] Free swap  = 0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090262] Total swap = 0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090262] 4146072 pages RAM
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090263] 0 pages HighMem/MovableOnly
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090263] 87190 pages reserved
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090264] 0 pages cma reserved
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090265] 0 pages hwpoisoned
ay 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090265] [ pid ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090276] [  431]     0   431    26476      246    94208        0             0 lvmetad
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090279] [  741]   103   741    12574      531   143360        0          -900 dbus-daemon
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090281] [  748]     0   748    77203      427   102400        0             0 lxcfs
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090283] [  752]     0   752    72495      816   188416        0             0 accounts-daemon
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090285] [  759]     0   759     7937      611   102400        0             0 cron
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090287] [  762]     0   762    17815      883   180224        0             0 systemd-logind
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090289] [  799]     0   799     7083      507   102400        0             0 atd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090291] [  863]     0   863     4103      440    81920        0             0 agetty
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090293] [  868]     0   868     3722      376    69632        0             0 agetty
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090295] [ 1520]  1000  1520    19187      533   192512        0             0 systemd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090298] [ 1529]  1000  1529    64837      626   262144        0             0 (sd-pam)
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090301] [ 6384]   106  6384     7148       96    98304        0             0 uuidd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090303] [12531]     0 12531    27619      486   110592        0             0 irqbalance
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090305] [12572]   102 12572    66818      375   180224        0             0 rsyslogd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090307] [12969]     0 12969     6344       58    86016        0             0 iscsid
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090309] [12971]     0 12971     6470     1329    94208        0           -17 iscsid
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090311] [13213]     0 13213    42703     2527   229376        0             0 networkd-dispat
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090313] [15160]     0 15160    18074      738   180224        0         -1000 sshd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090316] [ 3876]  1000  3876   332278     2092   356352        0             0 promtail
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090318] [30142]     0 30142   250293     2876   253952        0             0 amazon-ssm-agen
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090320] [19625]     0 19625   350480     4264   352256        0             0 containerd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090322] [20734]     0 20734   350208     8580   499712        0          -500 dockerd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090324] [11539]  1000 11539    44206     4114   225280        0             0 consul
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090326] [19294]     0 19294    72219      375   217088        0             0 polkitd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090328] [ 5840]     0  5840    10746      776   114688        0         -1000 systemd-udevd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090330] [10353]   100 10353    20042      501   184320        0             0 systemd-network
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090332] [10384]   101 10384    17720      226   180224        0             0 systemd-resolve
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090335] [10425] 62583 10425    33893      337   167936        0             0 systemd-timesyn
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090337] [10450]     0 10450    35556     1290   270336        0             0 systemd-journal
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090339] [10755]     0 10755   306634     3696   303104        0          -900 snapd
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090341] [  992]     0   992     2683      211    77824        0          -999 containerd-shim
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090343] [ 1013]     0  1013    37772     2629   180224        0             0 promtail
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090346] [23324]  1000 23324  4383314  3919808 31670272        0             0 loki
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090349] [  410]   999   410    55614     9873   245760        0          1000 netdata
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090352] [  461]   999   461     4627      554    81920        0          1000 bash
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090354] [  481]   999   481     5318      843    94208        0          1000 apps.plugin
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090356] [  485]   999   485    27918      330    81920        0          1000 go.d.plugin
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.090357] Out of memory: Kill process 410 (netdata) score 1002 or sacrifice child
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.098863] Killed process 481 (apps.plugin) total-vm:21272kB, anon-rss:1464kB, file-rss:1908kB, shmem-rss:0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.124577] oom_reaper: reaped process 481 (apps.plugin), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131868] loki invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131869] loki cpuset=/ mems_allowed=0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131875] CPU: 1 PID: 23325 Comm: loki Not tainted 4.15.0-1021-aws #21-Ubuntu
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131876] Hardware name: Amazon EC2 t3.xlarge/, BIOS 1.0 10/16/2017
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131877] Call Trace:
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131884]  dump_stack+0x63/0x8b
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131889]  dump_header+0x71/0x285
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131892]  oom_kill_process+0x220/0x440
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131894]  out_of_memory+0x2d1/0x4f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131896]  __alloc_pages_slowpath+0xa90/0xe50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131900]  ? alloc_pages_current+0x6a/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131905]  __alloc_pages_nodemask+0x263/0x280
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131907]  alloc_pages_current+0x6a/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131909]  __page_cache_alloc+0x81/0xa0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131911]  filemap_fault+0x378/0x6f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131914]  ? timerqueue_del+0x24/0x50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131916]  ? filemap_map_pages+0x22c/0x390
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131920]  ext4_filemap_fault+0x31/0x44
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131924]  __do_fault+0x24/0xf0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131926]  handle_pte_fault+0x883/0xd30
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131927]  __handle_mm_fault+0x478/0x5c0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131929]  handle_mm_fault+0xb1/0x1f0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131933]  __do_page_fault+0x250/0x4d0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131935]  do_page_fault+0x2e/0xe0
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131938]  ? async_page_fault+0x2f/0x50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131942]  do_async_page_fault+0x51/0x80
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131944]  async_page_fault+0x45/0x50
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.131946] RIP: 0033:0x438993
.
.
.
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.557304] Out of memory: Kill process 23324 (loki) score 970 or sacrifice child
May 10 14:48:20 ip-172-25-4-213 kernel: [4219389.565438] Killed process 23324 (loki) total-vm:17533256kB, anon-rss:15724904kB, file-rss:76kB, shmem-rss:0kB
May 10 14:48:20 ip-172-25-4-213 kernel: [4219390.164804] oom_reaper: reaped process 23324 (loki), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

[blindrood]

Any update on this? We're hitting this issue all the time

[zyclonite]

same here

[DanielDzr]

same here

[dguendisch]

Loki (v0.1.0) is oom-killed here as well. As soon as I fire a simple query but with a bigger timerange (e.g. 3h or 6h), memory consumption grows in like 10secs from nearly nothing (<1mb) to some 23gb until oomkiller kills loki.

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
16787 10001     20   0   26.0g  23.1g      0 S  75.1  78.5   0:34.57 loki

[yanan58]

I'm running into this as well. It seems that certain queries initiate the crash, but not always. It seems that the queries can sometimes be safely run a little while after a redeploy. And running the same query via logcli doesn't appear to trigger the OOM error, but running it via Grafana: Explore does.

same here

[cyriltovena]

Fixed in 0.2

[leonallen22]

Much appreciated! Would have been useful for convincing the team to stick with Loki if we had some feedback that this was being worked, but that's okay.