Why is the Linux OOM killer terminating my programs?
Memory cgroup out of memory
You need to avoid filling the memory cgroup that you are running within.
Task in /slurm/uid_11122/job_58003653/step_0 killed as a result of limit of /slurm/uid_11122/job_58003653
memory: usage 8,388,608kB, limit 8,388,608kB, failcnt 3673
memory+swap: usage 8388608kB, limit 16777216kB, failcnt 0
kmem: usage 0kB, limit 9007199254740988kB, failcnt 0Memory cgroup stats for /slurm/uid_11122/job_58003653: cache:0KB rss:0KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:0KB
Memory cgroup stats for /slurm/uid_11122/job_58003653/step_extern: cache:0KB rss:0KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:0KB Memory cgroup stats for /slurm/uid_11122/job_58003653/step_batch: cache:0KB rss:4452KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:4452KB inactive_file:0KB active_file:0KB unevictable:0KB Memory cgroup stats for /slurm/uid_11122/job_58003653/step_0: cache:6,399,032KB rss:1,985,124KB rss_huge:1,476,608KB mapped_file:2,0232KB swap:0KB inactive_anon:1,890,552KB active_anon:6,491,116KB inactive_file:1,216KB active_file:892KB unevictable:0KB
It looks like you have ~ 6.4GB in "shmem", which usually means a tmpfs. (Some other types of shmem are sysv IPC shared memory as shown by ipcs, or a memfd...). Combined with ~ 2GB RSS, that puts you over the 8.4GB limit for your cgroup. "shmem" is not mentioned in the messages, but I infer it from the ~ 6.4GB which is shown in both "cache" and "active_anon".
cache - page cache, including tmpfs (shmem), in bytes
active_anon - anonymous and swap cache on active least-recently-used (LRU) list, including tmpfs (shmem), in bytes
When a cgroup goes over its limit, we first try to reclaim memory from the cgroup so as to make space for the new pages that the cgroup has touched. If the reclaim is unsuccessful, an OOM routine is invoked to select and kill the bulkiest task in the cgroup.
https://www.kernel.org/doc/Documentation/cgroup-v1/memory.txt
Control groups, usually referred to as cgroups, are a Linux kernel feature which allow processes to be organized into hierarchical groups whose usage of various types of resources can then be limited and monitored. The kernel's cgroup interface is provided through a pseudo-filesystem called cgroupfs. Grouping is implemented in the core cgroup kernel code, while resource tracking and limits are implemented in a set of per-resource-type subsystems (memory, CPU, and so on).
http://man7.org/linux/man-pages/man7/cgroups.7.html
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Jadzia
Updated on September 18, 2022Comments
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Jadzia almost 2 years
I am running a complex workflow via bash scripts, which are using external programs/command to do different things. It runs fine for several hours, but then suddenly the OOM killer terminates programs of my workflow or the entire bash scripts, even though there is still plenty of memory available. I have logged the memory usage every 0.01 seconds with the ps command, there is no increase or change at all, and still several GB available. But suddenly from one memory snapshot to the next some process gets terminated by the OOM killer. Here is a typical ps snapshot of the memory usage:
PID %MEM RSS VSZ COMMAND USER 139443 1.2 1651768 8622936 java jadzia 123601 0.1 163352 523068 obabel jadzia 139355 0.0 5488 253120 srun jadzia 125747 0.0 5252 365088 obabel jadzia 125757 0.0 5252 365088 obabel jadzia 125388 0.0 5224 365088 obabel jadzia 125824 0.0 3764 267736 obabel jadzia 21062 0.0 3724 128628 bash jadzia 125778 0.0 3628 267736 obabel jadzia 127018 0.0 1904 113416 bash jadzia 126127 0.0 1812 161476 ps jadzia 139526 0.0 1740 10288 one-step.sh jadzia 139508 0.0 1736 10252 one-step.sh jadzia 139473 0.0 1728 10256 one-step.sh jadzia 139477 0.0 1728 10252 one-step.sh jadzia 139558 0.0 1724 10252 one-step.sh jadzia 139585 0.0 1724 10252 one-step.sh jadzia 139539 0.0 1704 10292 one-step.sh jadzia 139370 0.0 1688 9676 one-step.sh jadzia 139485 0.0 1688 10200 one-step.sh jadzia 125742 0.0 1544 10252 one-step.sh jadzia 125752 0.0 1532 10252 one-step.sh jadzia 125772 0.0 1532 10256 one-step.sh jadzia 125819 0.0 1532 10252 one-step.sh jadzia 125363 0.0 1508 10292 one-step.sh jadzia 123586 0.0 1496 10200 one-step.sh jadzia 139357 0.0 860 48364 srun jadzia 104975 0.0 724 6448 ng jadzia 91240 0.0 720 6448 ng jadziaThe RSS sum over all processes always stay below 3GB and never spikes.
When looking at the dmesg output, the entries show that it are different programs which invoke the oom-killer: from external binary programs such as obabel to the "tr" utility or the bash script which executes the commands itself. Here are two different dmesg examples which show the oom events:
[Thu Nov 1 15:15:27 2018] tr invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 [Thu Nov 1 15:15:27 2018] tr cpuset=step_0 mems_allowed=0-1 [Thu Nov 1 15:15:27 2018] CPU: 27 PID: 33591 Comm: tr Tainted: G OE ------------ 3.10.0-693.21.1.el7.x86_64 #1 [Thu Nov 1 15:15:27 2018] Hardware name: Dell Inc. PowerEdge M630/0R10KJ, BIOS 2.5.4 08/17/2017 [Thu Nov 1 15:15:27 2018] Call Trace: [Thu Nov 1 15:15:27 2018] [<ffffffff816ae7c8>] dump_stack+0x19/0x1b [Thu Nov 1 15:15:27 2018] [<ffffffff816a9b90>] dump_header+0x90/0x229 [Thu Nov 1 15:15:27 2018] [<ffffffff810c7c82>] ? default_wake_function+0x12/0x20 [Thu Nov 1 15:15:27 2018] [<ffffffff8118a3d6>] ? find_lock_task_mm+0x56/0xc0 [Thu Nov 1 15:15:27 2018] [<ffffffff811f5fb8>] ? try_get_mem_cgroup_from_mm+0x28/0x60 [Thu Nov 1 15:15:27 2018] [<ffffffff8118a884>] oom_kill_process+0x254/0x3d0 [Thu Nov 1 15:15:27 2018] [<ffffffff811f9cd6>] mem_cgroup_oom_synchronize+0x546/0x570 [Thu Nov 1 15:15:27 2018] [<ffffffff811f9150>] ? mem_cgroup_charge_common+0xc0/0xc0 [Thu Nov 1 15:15:27 2018] [<ffffffff8118b114>] pagefault_out_of_memory+0x14/0x90 [Thu Nov 1 15:15:27 2018] [<ffffffff816a7f2e>] mm_fault_error+0x68/0x12b [Thu Nov 1 15:15:27 2018] [<ffffffff816bb741>] __do_page_fault+0x391/0x450 [Thu Nov 1 15:15:27 2018] [<ffffffff816bb835>] do_page_fault+0x35/0x90 [Thu Nov 1 15:15:27 2018] [<ffffffff816b7768>] page_fault+0x28/0x30 [Thu Nov 1 15:15:27 2018] Task in /slurm/uid_11122/job_58003653/step_0 killed as a result of limit of /slurm/uid_11122/job_58003653 [Thu Nov 1 15:15:27 2018] memory: usage 8388608kB, limit 8388608kB, failcnt 3673 [Thu Nov 1 15:15:27 2018] memory+swap: usage 8388608kB, limit 16777216kB, failcnt 0 [Thu Nov 1 15:15:27 2018] kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 [Thu Nov 1 15:15:27 2018] Memory cgroup stats for /slurm/uid_11122/job_58003653: cache:0KB rss:0KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:0KB [Thu Nov 1 15:15:27 2018] Memory cgroup stats for /slurm/uid_11122/job_58003653/step_extern: cache:0KB rss:0KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:0KB [Thu Nov 1 15:15:27 2018] Memory cgroup stats for /slurm/uid_11122/job_58003653/step_batch: cache:0KB rss:4452KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:4452KB inactive_file:0KB active_file:0KB unevictable:0KB [Thu Nov 1 15:15:27 2018] Memory cgroup stats for /slurm/uid_11122/job_58003653/step_0: cache:6399032KB rss:1985124KB rss_huge:1476608KB mapped_file:20232KB swap:0KB inactive_anon:1890552KB active_anon:6491116KB inactive_file:1216KB active_file:892KB unevictable:0KB [Thu Nov 1 15:15:27 2018] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name [Thu Nov 1 15:15:27 2018] [20087] 11122 20087 28321 420 12 0 0 bash [Thu Nov 1 15:15:27 2018] [33058] 11122 33058 63274 1357 31 0 0 srun [Thu Nov 1 15:15:27 2018] [33060] 11122 33060 12085 207 23 0 0 srun [Thu Nov 1 15:15:27 2018] [33073] 11122 33073 2416 406 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33153] 11122 33153 3735255 498759 1385 0 0 java [Thu Nov 1 15:15:27 2018] [42230] 11122 42230 2542 422 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42240] 11122 42240 2543 421 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42261] 11122 42261 2542 421 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42285] 11122 42285 2541 422 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42302] 11122 42302 2543 422 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42316] 11122 42316 2542 422 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42331] 11122 42331 2564 424 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [42359] 11122 42359 2544 421 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33529] 11122 33529 2148 167 10 0 0 timeout [Thu Nov 1 15:15:27 2018] [33538] 11122 33538 1078 88 7 0 0 time_bin [Thu Nov 1 15:15:27 2018] [33540] 11122 33540 2148 167 10 0 0 timeout [Thu Nov 1 15:15:27 2018] [33541] 11122 33541 2148 166 10 0 0 timeout [Thu Nov 1 15:15:27 2018] [33542] 11122 33542 1609 177 8 0 0 ng [Thu Nov 1 15:15:27 2018] [33543] 11122 33543 1090 89 8 0 0 tail [Thu Nov 1 15:15:27 2018] [33544] 11122 33544 2472 181 11 0 0 awk [Thu Nov 1 15:15:27 2018] [33546] 11122 33546 1078 88 8 0 0 time_bin [Thu Nov 1 15:15:27 2018] [33554] 11122 33554 1078 88 8 0 0 time_bin [Thu Nov 1 15:15:27 2018] [33556] 11122 33556 1609 177 10 0 0 ng [Thu Nov 1 15:15:27 2018] [33562] 11122 33562 1609 177 9 0 0 ng [Thu Nov 1 15:15:27 2018] [33570] 11122 33570 9084 299 18 0 0 tar [Thu Nov 1 15:15:27 2018] [33586] 11122 33586 2564 333 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33587] 11122 33587 2148 166 10 0 0 timeout [Thu Nov 1 15:15:27 2018] [33588] 11122 33588 2564 279 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33589] 11122 33589 1078 89 8 0 0 time_bin [Thu Nov 1 15:15:27 2018] [33590] 11122 33590 2472 181 10 0 0 awk [Thu Nov 1 15:15:27 2018] [33591] 11122 33591 1075 48 6 0 0 tr [Thu Nov 1 15:15:27 2018] [33592] 11122 33592 2564 243 8 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33593] 11122 33593 2542 330 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33594] 11122 33594 1609 177 9 0 0 ng [Thu Nov 1 15:15:27 2018] [33595] 11122 33595 2542 318 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33596] 11122 33596 2542 240 8 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33597] 11122 33597 2542 240 9 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33598] 11122 33598 2542 240 8 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33599] 11122 33599 2542 240 8 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] [33600] 11122 33600 2542 240 8 0 0 one-step.sh [Thu Nov 1 15:15:27 2018] Memory cgroup out of memory: Kill process 33576 (java) score 238 or sacrifice child [Thu Nov 1 15:15:27 2018] Killed process 33153 (java) total-vm:14941020kB, anon-rss:1973844kB, file-rss:1008kB, shmem-rss:20184kB [Thu Nov 1 03:40:17 2018] obabel invoked oom-killer: gfp_mask=0xd0, order=0, oom_score_adj=0 [Thu Nov 1 03:40:17 2018] obabel cpuset=step_0 mems_allowed=0-1 [Thu Nov 1 03:40:17 2018] CPU: 29 PID: 123601 Comm: obabel Tainted: G OE ------------ T 3.10.0-693.21.1.el7.x86_64 #1 [Thu Nov 1 03:40:17 2018] Hardware name: Dell Inc. PowerEdge M630/0R10KJ, BIOS 2.5.4 08/17/2017 [Thu Nov 1 03:40:17 2018] Call Trace: [Thu Nov 1 03:40:17 2018] [<ffffffff816ae7c8>] dump_stack+0x19/0x1b [Thu Nov 1 03:40:17 2018] [<ffffffff816a9b90>] dump_header+0x90/0x229 [Thu Nov 1 03:40:17 2018] [<ffffffff810c7c82>] ? default_wake_function+0x12/0x20 [Thu Nov 1 03:40:17 2018] [<ffffffff8118a3d6>] ? find_lock_task_mm+0x56/0xc0 [Thu Nov 1 03:40:17 2018] [<ffffffff811f5fb8>] ? try_get_mem_cgroup_from_mm+0x28/0x60 [Thu Nov 1 03:40:17 2018] [<ffffffff8118a884>] oom_kill_process+0x254/0x3d0 [Thu Nov 1 03:40:17 2018] [<ffffffff811f9cd6>] mem_cgroup_oom_synchronize+0x546/0x570 [Thu Nov 1 03:40:17 2018] [<ffffffff811f9150>] ? mem_cgroup_charge_common+0xc0/0xc0 [Thu Nov 1 03:40:17 2018] [<ffffffff8118b114>] pagefault_out_of_memory+0x14/0x90 [Thu Nov 1 03:40:17 2018] [<ffffffff816a7f2e>] mm_fault_error+0x68/0x12b [Thu Nov 1 03:40:17 2018] [<ffffffff816bb741>] __do_page_fault+0x391/0x450 [Thu Nov 1 03:40:17 2018] [<ffffffff816bb835>] do_page_fault+0x35/0x90 [Thu Nov 1 03:40:17 2018] [<ffffffff816b7768>] page_fault+0x28/0x30 [Thu Nov 1 03:40:17 2018] Task in /slurm/uid_11122/job_57832937/step_0 killed as a result of limit of /slurm/uid_11122/job_57832937 [Thu Nov 1 03:40:17 2018] memory: usage 8388608kB, limit 8388608kB, failcnt 363061 [Thu Nov 1 03:40:17 2018] memory+swap: usage 8388608kB, limit 16777216kB, failcnt 0 [Thu Nov 1 03:40:17 2018] kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 [Thu Nov 1 03:40:17 2018] Memory cgroup stats for /slurm/uid_11122/job_57832937: cache:0KB rss:0KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:0KB inactive_file:0KB active_file:0KB unevictable:0KB [Thu Nov 1 03:40:17 2018] Memory cgroup stats for /slurm/uid_11122/job_57832937/step_extern: cache:152KB rss:3944KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:3936KB inactive_file:76KB active_file:76KB unevictable:0KB [Thu Nov 1 03:40:17 2018] Memory cgroup stats for /slurm/uid_11122/job_57832937/step_batch: cache:0KB rss:4760KB rss_huge:0KB mapped_file:0KB swap:0KB inactive_anon:0KB active_anon:4760KB inactive_file:0KB active_file:0KB unevictable:0KB [Thu Nov 1 03:40:17 2018] Memory cgroup stats for /slurm/uid_11122/job_57832937/step_0: cache:6554284KB rss:1825468KB rss_huge:401408KB mapped_file:13556KB swap:0KB inactive_anon:439516KB active_anon:7937116KB inactive_file:1500KB active_file:1476KB unevictable:0KB [Thu Nov 1 03:40:17 2018] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name [Thu Nov 1 03:40:17 2018] [127018] 11122 127018 28354 476 12 0 0 bash [Thu Nov 1 03:40:17 2018] [139355] 11122 139355 63280 1372 33 0 0 srun [Thu Nov 1 03:40:17 2018] [139357] 11122 139357 12091 215 25 0 0 srun [Thu Nov 1 03:40:17 2018] [139370] 11122 139370 2419 422 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139443] 11122 139443 2155734 412939 953 0 0 java [Thu Nov 1 03:40:17 2018] [139473] 11122 139473 2564 432 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139477] 11122 139477 2563 432 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139485] 11122 139485 2550 422 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139508] 11122 139508 2563 434 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139526] 11122 139526 2572 435 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139539] 11122 139539 2573 426 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139558] 11122 139558 2563 431 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [139585] 11122 139585 2563 431 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [21062] 11122 21062 32157 931 14 0 0 bash [Thu Nov 1 03:40:17 2018] [91238] 11122 91238 2151 170 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [91239] 11122 91239 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [91240] 11122 91240 1612 180 9 0 0 ng [Thu Nov 1 03:40:17 2018] [104964] 11122 104964 2151 171 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [104969] 11122 104969 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [104975] 11122 104975 1612 181 8 0 0 ng [Thu Nov 1 03:40:17 2018] [123586] 11122 123586 2550 374 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [123592] 11122 123592 2151 171 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [123593] 11122 123593 3325 171 12 0 0 sed [Thu Nov 1 03:40:17 2018] [123596] 11122 123596 1081 89 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [123601] 11122 123601 130767 40835 261 0 0 obabel [Thu Nov 1 03:40:17 2018] [125363] 11122 125363 2573 377 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [125369] 11122 125369 2151 171 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [125372] 11122 125372 1089 81 8 0 0 uniq [Thu Nov 1 03:40:17 2018] [125373] 11122 125373 3324 171 11 0 0 sed [Thu Nov 1 03:40:17 2018] [125380] 11122 125380 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [125388] 11122 125388 91272 1302 179 0 0 obabel [Thu Nov 1 03:40:17 2018] [125742] 11122 125742 2563 386 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [125743] 11122 125743 2151 170 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [125744] 11122 125744 1089 81 8 0 0 uniq [Thu Nov 1 03:40:17 2018] [125745] 11122 125745 3324 171 12 0 0 sed [Thu Nov 1 03:40:17 2018] [125746] 11122 125746 1081 87 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [125747] 11122 125747 91272 1309 180 0 0 obabel [Thu Nov 1 03:40:17 2018] [125752] 11122 125752 2563 383 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [125753] 11122 125753 2151 170 9 0 0 timeout [Thu Nov 1 03:40:17 2018] [125754] 11122 125754 1089 82 9 0 0 uniq [Thu Nov 1 03:40:17 2018] [125755] 11122 125755 3324 172 11 0 0 sed [Thu Nov 1 03:40:17 2018] [125756] 11122 125756 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [125757] 11122 125757 91272 1309 179 0 0 obabel [Thu Nov 1 03:40:17 2018] [125772] 11122 125772 2564 383 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [125773] 11122 125773 2151 170 10 0 0 timeout [Thu Nov 1 03:40:17 2018] [125774] 11122 125774 1088 86 7 0 0 uniq [Thu Nov 1 03:40:17 2018] [125775] 11122 125775 3324 172 12 0 0 sed [Thu Nov 1 03:40:17 2018] [125776] 11122 125776 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [125778] 11122 125778 66934 902 131 0 0 obabel [Thu Nov 1 03:40:17 2018] [125819] 11122 125819 2563 383 10 0 0 one-step.sh [Thu Nov 1 03:40:17 2018] [125820] 11122 125820 2151 171 11 0 0 timeout [Thu Nov 1 03:40:17 2018] [125821] 11122 125821 1088 87 8 0 0 uniq [Thu Nov 1 03:40:17 2018] [125822] 11122 125822 3324 172 10 0 0 sed [Thu Nov 1 03:40:17 2018] [125823] 11122 125823 1081 88 8 0 0 time_bin [Thu Nov 1 03:40:17 2018] [125824] 11122 125824 66934 931 132 0 0 obabel [Thu Nov 1 03:40:17 2018] [126131] 11122 126131 40335 445 33 0 0 ps [Thu Nov 1 03:40:17 2018] [126132] 11122 126132 26980 166 10 0 0 head [Thu Nov 1 03:40:17 2018] [126133] 11122 126133 26990 153 10 0 0 column [Thu Nov 1 03:40:17 2018] Memory cgroup out of memory: Kill process 125649 (NGSession 36387) score 197 or sacrifice child [Thu Nov 1 03:40:17 2018] Killed process 139443 (java) total-vm:8622936kB, anon-rss:1637312kB, file-rss:960kB, shmem-rss:13484kBThe java application which runs in the background is always killed at the end by the oom-manager because it frees up most memory I think. Regarding the java program, I have checked the garbage collection/GC log files, all normal there. Also, I used three different versions for the JVM, but the problem seems to be independent of that.
How can I find out what is really causing the oom-manager to terminate my programs?
I am not an admin on the machines I use, they are compute nodes of a Linux cluster. The kernel version is 3.10.0-693.21.1.el7.x86_64.
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Jadzia over 5 yearsMy jobs accumulate indeed many GB of memory there. I'm pretty sure you discovered the problem. Thank you so much for your help, really appreciated it. You might want to adjust the main text in your answer so that I can accept it.