How does the OOM killer decide which process to kill first? The OOM Killer has to select the best process(es) to kill Best here refers to that process which will free up the maximum memory upon killing and is also the least important to the system The primary goal is to kill the least number of processes that minimizes the damage done and at the same time maximizing the amount of memory freed
Understanding the reasoning behind an OOM invokation Given an OOM-killer invokation log, where is the correct information of the remaining memory; Why is there, according to the Node 0 Normal line still more than enough memory available in the HIGHUSER_MOVABLE "region" but yet no pages seem to be available
Debug out-of-memory with var log messages - linux grep oom var log * grep total_vm var log * The former should show up a bunch of times and the latter in only one or two places That is the file you want to look at Find the original "Out of memory" line in one of the files that also contains total_vm Thirty second to a minute (could be more, could be less) before that line you'll find
Why does linux out-of-memory (OOM) killer not run automatically, but . . . according to this documentation it seems that the under_oom is additional information: "The memory oom_control file also reports the OOM status of the current cgroup under the under_oom entry If the cgroup is out of memory and tasks in it are paused, the under_oom entry reports the value 1"
如何理解Linux中的OOM(Out Of Memory Killer)机制？ - 知乎 至于OOM Killer这种叫法，一听就是自由软件的人想出来的，Linux很早的时候根本就没有什么OOM Killer，只有OOM（很接近OOP：）），OOP完就大家一起死翘翘。 至于Unix这种打领带上班的，人家修养高，怎么可能OOP嘛，人家都是打电话给客户，用浓重的伦敦腔说“Dear Sir
kill - receive signal before process is being killed by OOM killer . . . This process, thus, will become a decoy: when you are reaching cgroup memory limit, OOM killer will kill this decoy process instead of the main process The main process can wait on its child decoy to know the exact moment when OOM killer is triggered IMO, it's easier than monitoring script with some threshold Here's example in Bash
linux kernel - Why is the OOM killer killing processes when swap is . . . This Linux OOM thing has been bothering me for months Linux is VERY dumb when it comes to caches, it never clears it up, even after simple operations like a file copy, the cache to the copied file just sits there, very annoying having to manually clear caches almost daily to avoid a system freeze
Python programs suddenly get killed - Unix Linux Stack Exchange There's nothing to be done here, I'm afraid The process is being killed by the OOM killer (Out Of Memory Killer), which is a process of the operating system whose job it is to kill jobs that are taking up too much memory before they crash your machine This is a good thing Without it, your machine would simply become unresponsive
Is there a way to configure the Linux OOM killer to kill the parent . . . For example, if you have 32 GB of RAM and a Chrome tab has oom_score_adj value of 300 (as automatically set by Google Chrome host process) and the tab actually consumes 105 MB RAM it will be pretty surely selected as OOM victim because when OOM killer is selecting the victim, kernel OOM killer implementation currently computes the "logical