alt Hacker NewsOOM killer always felt like a band-aid on a severed artery to me. I've rarely seen a machine that got into OOM state really recover without a full reboot.
OOM killer always felt like a band-aid on a severed artery to me. I've rarely seen a machine that got into OOM state really recover without a full reboot.
Why would a system break if you SIGKILL a process?
I’ve seen plenty of server log with OOM killing mariadb processes, and then being restarted automatically by systemd, often with no one noticing if not days later.
The thing that bogs down systems and often makes them unrecoverable is when a memory hungry process starts swapping. Good luck trying to SSH in. Swap is such a silly idea on servers - good to deal with pages no one accesses, catastrophic when you’re out of RAM and memory latencies suddenly become 4 or 5 orders of magnitude slower.