Linux Out-of-memory Killer
The OOM Killer is the Linux kernel's built in mechanism for protecting a machine from using up all memory.
Questions tagged [oom]
100 questions
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5 answers
Prevent Linux's OOM from killing apache on our webserver
We have a debian linux webserver. It's just running apache2. Our mysql server is on another host. However we sometimes run cron tasks on the webserver to do regular tasks.
However recently one of the cron tasks had a bug and started to gobble up the…
Amandasaurus
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3 answers
OOM invoked with plenty of free swap
I am running an ARM router with i2p and tor on it - a Netgear R7000.
Of course I've added a full 512 MB of SWAP to it to prevent OOMs, understanding that it could slow down the system... But then I still get OOM killer starting with plenty of SWAP…
Evengard
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4 answers
LInux OOM custom response
I'm running Apache webserver and would like to improve a little bit how the OOM situation is handled.
I'm avare of the OOM scores and already did some customizations in that matter so when something bad happens, Linux is killing the correct…
dave
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fio 3.23 core dumps when bench-marking many small files
I have been asked to come up fio benchmark results for this test dataset: 1048576x1MiB. So, overall size is 1TiB. The set contains 2^20 1MiB files. The server runs CentOS Linux release 7.8.2003 (Core). It has sufficient RAM:
[root@tbn-6 src]# free…
foss4me
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apache httpd process be killed by kernel oom
some apache httpd process's memory and cpu usage too high, be killed by kernel, but I don't know why httpd use such many memory. I need some method to analyse or some method to reproduct.
some message about the apache and syslog
Server version:…
user545235
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votes
1 answer
Disable Linux kernel from killing postgresql process
I have standard 'out-of-the-box' installation of
Linux version 3.0.1.stk64 (dfn@localhost.localdomain) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Sat Aug 13 12:53:46 EDT 2011
It has postgresql 8.4 installed as (start…
Martin
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what do these messages suggest (linux kernel dump, seems OOM)?
I got the following errors from system log (/var/log/messages). what they indicate? And how to solve them?
Sep 30 05:19:35 node23 kernel: Mem-info:
Sep 30 05:19:35 node23 kernel: Node 0 DMA per-cpu:
Sep 30 05:19:35 node23 kernel: cpu 0 hot: high 0,…
Mickey Shine
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Enough memory but OOM killer invoked?
It has been a long time since my old friend the OOM killer came to visit me. Now it is coming by once a week and I cannot figure out why it’s triggered. It doesn’t seem that I’m missing memory. What is causing that and what can be done to prevent…
MikeSkril
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Out of memory at 18% usage : where the ram goes?
This is related to : Out of memory at 72% usage
It looks to be the same problem but the question is slightly different : Where my memory goes ? I have 18% memory usage and my OOM Killer is killing mysqld each 10 minutes.
I was able to gather some…
Ifnot
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What's the technique to find out bottleneck?
I setup a wordpress on Digital Ocean for the smallest droplet for a few months.
Recently, my blog gone viral (1000+ facebook shares) and the server take 50+ seconds to respond.(Google Analytics show there's around 40 people on my blog at the same…
尤川豪
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4 answers
Ubuntu how to detect if OOM killer have run
We use Nagios to monitor our servers. Now.. linux uses all the RAM we give them so there is no way to detect if we are about to run out of memory. We have a couple of times had some server crashes due to excessive memory usage.
Is there any way to…
Ronnie Jespersen
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1 answer
How to find which cgroup caused OOM?
I'm using cgroup to partition my processes and I'm getting Out Of Memory messages in my kernel logs.
However, I can't find which partition causes them. I've checked the memory controller cgroup but there are no obvious ways to use it.
The problem…
Cyberax
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OOM killer goes insane
On our cluster we would sometimes have nodes go down when a new process would request too much memory. I was puzzled why the OOM killer does not just kill the guilty process.
The reason turned out to be that some processes get -17 oom_adj. That…
Aleksandr Levchuk
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Linux OOM-killer acting despite plenty available memory
Once a week or so the OOM-killer shoots down a postgres process in my server, despite that 'free' states it has plenty of available memory.
I have read several threads here and there, but cant see any real explanations. Is it really because the…
Alexander Kolodziej
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Long page allocation stalls on Linux – why does this happen?
I have a problem (which I can reliably reproduce) on a bunch of Linux hosts, where the system becomes completely unresponsive after a process aggressively consumes memory. I see things like this in the kernel log:
2017-09-14 19:53:51.252365 kernel:…
obeattie
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