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JVM Out of Memory Inspires Give Large Heap Space

I created a test application in the Amazon cloud using a small image that can create 800 threads. The heap area assigned by the JVM is 1024 MB. The application worked successfully and I had no problems.

I created another large image with 7.5 GB Ram and produced 1000 threads. the cumulative space assigned by the JVM is 2048M. The application could not throw an error from memory.

Despite the higher configuration, why does the JVM give such an error?

Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80291a5c>] autoremove_wake_function+0x0/0x2e Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:27 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 22 Cold: hi: 62, btch: 15 usd: 60 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 158 Cold: hi: 62, btch: 15 usd: 55 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1835342 inactive:7 dirty:180 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2194 slab:11116 mapped:317 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:8776kB min:11144kB low:13928kB high:16716kB active:7341496kB inactive:28kB present:7764880kB pages_scanned:264302704 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 52*4kB 4*8kB 1*16kB 0*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 8768kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025d98b>] __wait_on_bit_lock+0x5b/0x66 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8023fe2e>] __lock_page+0x5e/0x64 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 22 Cold: hi: 62, btch: 15 usd: 60 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 158 Cold: hi: 62, btch: 15 usd: 55 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1835374 inactive:7 dirty:180 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2194 slab:11116 mapped:317 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:8776kB min:11144kB low:13928kB high:16716kB active:7341496kB inactive:28kB present:7764880kB pages_scanned:264523454 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 52*4kB 4*8kB 1*16kB 0*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 8768kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 55853 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Out of memory: kill process 5555 (java) score 4378836 or a child Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Killed process 5556 (java) Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025d98b>] __wait_on_bit_lock+0x5b/0x66 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8023fe2e>] __lock_page+0x5e/0x64 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 22 Cold: hi: 62, btch: 15 usd: 60 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 158 Cold: hi: 62, btch: 15 usd: 55 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1835407 inactive:7 dirty:180 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2194 slab:11116 mapped:317 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:8776kB min:11144kB low:13928kB high:16716kB active:7341628kB inactive:28kB present:7764880kB pages_scanned:264550577 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 52*4kB 4*8kB 1*16kB 0*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 8768kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1929 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80291a5c>] autoremove_wake_function+0x0/0x2e Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886171 inactive:12 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7544684kB inactive:48kB present:7764880kB pages_scanned:178561830 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1939 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80222c57>] __up_read+0x19/0x7f Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886171 inactive:12 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7544684kB inactive:48kB present:7764880kB pages_scanned:178800160 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1924 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80291a5c>] autoremove_wake_function+0x0/0x2e Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886171 inactive:12 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7544684kB inactive:48kB present:7764880kB pages_scanned:178896858 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1920 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80222c57>] __up_read+0x19/0x7f Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886171 inactive:12 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7544684kB inactive:48kB present:7764880kB pages_scanned:179113524 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1934 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025d98b>] __wait_on_bit_lock+0x5b/0x66 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8023fe2e>] __lock_page+0x5e/0x64 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886211 inactive:12 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7544844kB inactive:48kB present:7764880kB pages_scanned:179739273 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1857 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8808972f>] :jbd:journal_stop+0x1e2/0x1ee Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80216452>] __generic_file_aio_write_nolock+0x375/0x3e8 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80222c57>] __up_read+0x19/0x7f Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Mem-info: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA per-cpu: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 0: Hot: hi: 186, btch: 31 usd: 154 Cold: hi: 62, btch: 15 usd: 47 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: CPU 1: Hot: hi: 186, btch: 31 usd: 182 Cold: hi: 62, btch: 15 usd: 48 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Active:1886279 inactive:0 dirty:2 writeback:0 unstable:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: free:2781 slab:10912 mapped:5 pagetables:8823 bounce:0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA free:11124kB min:11144kB low:13928kB high:16716kB active:7545116kB inactive:0kB present:7764880kB pages_scanned:180180710 all_unreclaimable? yes Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: lowmem_reserve[]: 0 0 0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: DMA: 9*4kB 232*8kB 43*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 2*4096kB = 11124kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Total swap = 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Free swap: 0kB Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1968128 pages of RAM Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 38914 reserved pages Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 1843 pages shared Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: 0 pages swap cached Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: printk: 485 messages suppressed. Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: java invoked oom-killer: gfp_mask=0x201d2, order=0, oomkilladj=0 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: Call Trace: Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802afc1f>] out_of_memory+0x6d/0x1c4 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8020edc1>] __alloc_pages+0x23e/0x2c7 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff802123fc>] __do_page_cache_readahead+0xf4/0x258 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8023dd5c>] lock_timer_base+0x26/0x4b Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80235881>] find_extend_vma+0x16/0x59 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8029594a>] get_futex_key+0x47/0x10c Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80222c57>] __up_read+0x19/0x7f Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8021397f>] filemap_nopage+0x140/0x332 Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80208ef3>] __handle_mm_fault+0x442/0x114a Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff80261a33>] do_page_fault+0xf23/0x128d Nov 2 07:35:31 274535-12-31-39-0E-B6-12 kernel: [<ffffffff8025f447>] error_exit+0x0/0x79
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I was wondering what resources a Java thread can use other and then stack memory. Java seems to be using the OS as a scheduler, and if the OS cannot spawn a thread, Java will report this as an OutOfMemoryException.

http://www.talkingtree.com/blog/index.cfm/2005/3/11/NewNativeThread

The post is pretty old, but it fits your situation ... You can try suggestions on this and see if this helps:

The maximum number of threads for a process on Linux?

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Source: https://habr.com/ru/post/1380250/

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