We have a postgres 8.3.8 on linux
We get following messages int /var/log/messages:
May 6 22:31:01 pgblade02 kernel: postgres invoked oom-killer:
gfp_mask=0x201d2, order=0, oomkilladj=0
May 6 22:31:01 pgblade02 kernel:
May 6 22:31:01 pgblade02 kernel: Call Trace:
May 6 22:31:19 pgblade02 kernel: [<ffffffff800bed05>]
out_of_memory+0x8e/0x2f5
May 6 22:31:19 pgblade02 kernel: [<ffffffff8000f071>]
__alloc_pages+0x22b/0x2b4
May 6 22:31:19 pgblade02 kernel: [<ffffffff80012720>]
__do_page_cache_readahead+0x95/0x1d9
May 6 22:31:19 pgblade02 kernel: [<ffffffff800618e1>]
__wait_on_bit_lock+0x5b/0x66
May 6 22:31:19 pgblade02 kernel: [<ffffffff881fdc61>]
:dm_mod:dm_any_congested+0x38/0x3f
May 6 22:31:19 pgblade02 kernel: [<ffffffff800130ab>]
filemap_nopage+0x148/0x322
May 6 22:31:19 pgblade02 kernel: [<ffffffff800087ed>]
__handle_mm_fault+0x1f8/0xdf4
May 6 22:31:19 pgblade02 kernel: [<ffffffff80064a6a>]
do_page_fault+0x4b8/0x81d
May 6 22:31:19 pgblade02 kernel: [<ffffffff80060f29>]
thread_return+0x0/0xeb
May 6 22:31:19 pgblade02 kernel: [<ffffffff8005bde9>] error_exit+0x0/0x84
May 6 22:31:27 pgblade02 kernel:
May 6 22:31:28 pgblade02 kernel: Mem-info:
May 6 22:31:28 pgblade02 kernel: Node 0 DMA per-cpu:
May 6 22:31:28 pgblade02 kernel: cpu 0 hot: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 0 cold: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 1 hot: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 1 cold: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 2 hot: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 2 cold: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 3 hot: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: cpu 3 cold: high 0, batch 1 used:0
May 6 22:31:28 pgblade02 kernel: Node 0 DMA32 per-cpu:
May 6 22:31:28 pgblade02 kernel: cpu 0 hot: high 186, batch 31 used:27
May 6 22:31:29 pgblade02 kernel: cpu 0 cold: high 62, batch 15 used:54
May 6 22:31:29 pgblade02 kernel: cpu 1 hot: high 186, batch 31 used:23
May 6 22:31:29 pgblade02 kernel: cpu 1 cold: high 62, batch 15 used:49
May 6 22:31:29 pgblade02 kernel: cpu 2 hot: high 186, batch 31 used:12
May 6 22:31:29 pgblade02 kernel: cpu 2 cold: high 62, batch 15 used:14
May 6 22:31:29 pgblade02 kernel: cpu 3 hot: high 186, batch 31 used:50
May 6 22:31:29 pgblade02 kernel: cpu 3 cold: high 62, batch 15 used:60
May 6 22:31:29 pgblade02 kernel: Node 0 Normal per-cpu:
May 6 22:31:29 pgblade02 kernel: cpu 0 hot: high 186, batch 31 used:5
May 6 22:31:29 pgblade02 kernel: cpu 0 cold: high 62, batch 15 used:48
May 6 22:31:29 pgblade02 kernel: cpu 1 hot: high 186, batch 31 used:11
May 6 22:31:29 pgblade02 kernel: cpu 1 cold: high 62, batch 15 used:39
May 6 22:31:29 pgblade02 kernel: cpu 2 hot: high 186, batch 31 used:14
May 6 22:31:29 pgblade02 kernel: cpu 2 cold: high 62, batch 15 used:57
May 6 22:31:29 pgblade02 kernel: cpu 3 hot: high 186, batch 31 used:94
May 6 22:31:29 pgblade02 kernel: cpu 3 cold: high 62, batch 15 used:36
May 6 22:31:29 pgblade02 kernel: Node 0 HighMem per-cpu: empty
May 6 22:31:29 pgblade02 kernel: Free pages: 41788kB (0kB HighMem)
May 6 22:31:29 pgblade02 kernel: Active:974250 inactive:920579 dirty:0
writeback:0 unstable:0 free:10447 slab:11470 mapped-file:985
mapped-anon:1848625 pagetables:111027
May 6 22:31:29 pgblade02 kernel: Node 0 DMA free:11172kB min:12kB
low:12kB high:16kB active:0kB inactive:0kB present:10816kB
pages_scanned:0 all_unreclaimable? yes
May 6 22:31:29 pgblade02 kernel: lowmem_reserve[]: 0 3254 8052 8052
May 6 22:31:29 pgblade02 kernel: Node 0 DMA32 free:23804kB min:4636kB
low:5792kB high:6952kB active:1555260kB inactive:1566144kB
present:3332668kB pages_scanned:35703257 all_unreclaimable? yes
May 6 22:31:29 pgblade02 kernel: lowmem_reserve[]: 0 0 4797 4797
May 6 22:31:29 pgblade02 kernel: Node 0 Normal free:6812kB min:6836kB
low:8544kB high:10252kB active:2342332kB inactive:2115836kB
present:4912640kB pages_scanned:10165709 all_unreclaimable? yes
May 6 22:31:29 pgblade02 kernel: lowmem_reserve[]: 0 0 0 0
May 6 22:31:29 pgblade02 kernel: Node 0 HighMem free:0kB min:128kB
low:128kB high:128kB active:0kB inactive:0kB present:0kB pages_scanned:0
all_unreclaimable? no
May 6 22:31:29 pgblade02 kernel: lowmem_reserve[]: 0 0 0 0
May 6 22:31:29 pgblade02 kernel: Node 0 DMA: 3*4kB 5*8kB 3*16kB 6*32kB
4*64kB 3*128kB 0*256kB 0*512kB 2*1024kB 0*2048kB 2*4096kB = 11172kB
May 6 22:31:29 pgblade02 kernel: Node 0 DMA32: 27*4kB 0*8kB 1*16kB
0*32kB 2*64kB 4*128kB 0*256kB 1*512kB 0*1024kB 1*2048kB 5*4096kB = 23804kB
May 6 22:31:29 pgblade02 kernel: Node 0 Normal: 21*4kB 9*8kB 26*16kB
3*32kB 6*64kB 5*128kB 0*256kB 0*512kB 1*1024kB 0*2048kB 1*4096kB = 6812kB
May 6 22:31:29 pgblade02 kernel: Node 0 HighMem: empty
May 6 22:31:29 pgblade02 kernel: Swap cache: add 71286821, delete
71287152, find 207780333/216904318, race 1387+10506
May 6 22:31:29 pgblade02 kernel: Free swap = 0kB
May 6 22:31:30 pgblade02 kernel: Total swap = 8388600kB
May 6 22:31:30 pgblade02 kernel: Free swap: 0kB
May 6 22:31:30 pgblade02 kernel: 2293759 pages of RAM
May 6 22:31:30 pgblade02 kernel: 249523 reserved pages
May 6 22:31:30 pgblade02 kernel: 56111 pages shared
May 6 22:31:30 pgblade02 kernel: 260 pages swap cached
May 6 22:31:30 pgblade02 kernel: Out of memory: Killed process 29076
(postgres).
We get folloowing errors in the postgres log:
A couple of time:
2010-05-06 22:26:28 CEST [23001]: [2-1] WARNING: worker took too long
to start; cancelled
Then:
2010-05-06 22:31:21 CEST [29059]: [27-1] LOG: system logger process
(PID 29076) was terminated by signal 9: Killed
Finally:
2010-05-06 22:50:20 CEST [29059]: [28-1] LOG: background writer process
(PID 22999) was terminated by signal 9: Killed
2010-05-06 22:50:20 CEST [29059]: [29-1] LOG: terminating any other
active server processes
Any help higly apprecaited,
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