OOM score of process troubleshooting
Higher oom_score = likelier victim; set oom_score_adj -1000 to immunize a pid
cat /proc/<pid>/oom_score /proc/<pid>/oom_score_adj
more troubleshooting
all 32 commands →
cgroup v2 OOM events
cat /sys/fs/cgroup/<name>/memory.events | grep -E 'oom|max'
Deleted files holding disk
lsof +L1 | sort -k7 -rn | head
Disk I/O latency saturation
iostat -x 1 | awk '$1!~/^$/{print $1, "util="$NF, "await="$(NF-2)}'
Per-process block I/O top
biotop-bpfcc -C 5 1
Conntrack table full check
conntrack -L 2>/dev/null | wc -l; conntrack -S