Questions tagged [oom]

Linux Out-of-memory Killer

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4
votes
1answer
33 views

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)...
0
votes
1answer
34 views

How do I track down a mysql memory issue on a server running a single WordPress site?

I'm having a weird issue. A few times a week, a website I'm running on Amazon Lightsail comes to a crashing halt and becomes IO bound (I can't usually use ssh when this happens) and the server runs ...
2
votes
4answers
113 views

mysqld crashing almost every hour - mysqld invoked oom-killer

I am running wordpress on a centOS digital ocean droplet my mysql keeps crashing almost every hour -- with an out of memory error manually restarting mysqld brings it back up via sudo service mysqld ...
2
votes
2answers
1k views

NFS server with out of memory

I have multiple machines sharing home directory via NFS share used by 6-10 users. All machines are used to run computational experiments including the one with NFS server. Although it is very rare but ...
0
votes
1answer
230 views

Kubernetes Pod OOMKilled Issue

The scenario is we run some web sites based on an nginx image in kubernetes cluster. When we had our cluster setup with nodes of 2cores and 4GB RAM each. The pods had the following configurations, cpu:...
0
votes
1answer
94 views

Kill the most memory-hungry process when memory gets low [closed]

Sometimes my Linux desktop, laptop, or server run out of RAM because the experimental software I work with occasionally tries to use more RAM than I have available. When this happens, the system and ...
0
votes
0answers
108 views

Jenkins not running - OOM

without any noticeable change on my server (Ubuntu 16.04.1) my Jenkins stops working approximately every couple of hours. When I checked logs from Jenkins, there is nothing related. Then I checked ...
0
votes
0answers
113 views

Out of memory in Linux server killing my tomcat server

From last night I am getting below unexpected behaviour. Out of memory: Kill process 1740 (java) score 128 or sacrifice child Apr 8 19:14:20 ubuntu-s-4vcpu-8gb-sgp1-01 kernel: [17644.393549] Out of ...
5
votes
1answer
413 views

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 ...
0
votes
0answers
150 views

Why is systemd-resolve killing my java server?

I've been running into this problem where every few days one of my java servers is just dying. To figure out why, I ran cat /var/log/syslog which produces: Sep 21 06:36:24 ip-172-31-42-5 systemd-...
0
votes
1answer
125 views

OOM despite the large amount of free SWAP

During some ML training htop shows usage of all RAM (16GB) and only 2G (out of 16GB) of SWAP when OOM happens. dmesg shows: [pon sie 12 11:53:44 2019] Purging GPU memory, 0 bytes freed, 131072 ...
0
votes
1answer
327 views

What Java -Xmx setting can I reasonably expect to work on an AWS EC2 Ubuntu server?

What is your experience? Can you confirm my experimental findings? Can I generally use total RAM - 600 MB, or 0.4 * total RAM? Or is it always trial and error, and hoping that it is low enough? ...
2
votes
0answers
53 views

What abbreviations in OOM Killer memory statistics report means?

When OOM Killer or kernel reports memory state it uses the next abbreviations Node 0 DMA: 26*4kB (M) 53*8kB (UM) 33*16kB (ME) 23*32kB (UME) 6*64kB (ME) 7*128kB (UME) 1*256kB (M) 2*512kB (ME) 0*...
1
vote
0answers
231 views

Linux out of memory killer kills process when there is more than enough memory available

We are running a 64-Bit Ubuntu and our 32GB of physical memory is split into 3 zones (DMA: 16MB, DMA32: 4GB and Normal: 30GB). According to the dmesg logs printed below our system ran out of free ...
0
votes
2answers
556 views

OOM kills a process while there is still a lot of available memory

I am aware that there are many threads like this one, but none of them actually give a methodology on how to read an OOM message. I have a db that is being monitored through NRPE for available ...

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