Questions tagged [memory]
Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.
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which memory limit applies when php performs a MySQL query
If I run php as FPM, I can set my memory limit in php.ini or .user.ini. PHP can perform a MySQL query, and I can set memory limits in /etc/my.cnf for for instance the innodb buffer pool. If PHP runs ...
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MCE Errors but no edac-util errors?
I have an older HP Z440 tower with 4x8GB ECC DDR4, running Proxmox VE 6.4.
Recently, it started showing MCE errors every few seconds. I installed rasdaemon and can see that they are memory read errors....
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kernel messages are complained about memory.inspite all DIMM cards was replaced
we have few DELL machines ( with RHEL 7.6) , and as we replaced the DIMM cards on machines because the Erros that we seen from kernel messages
after some time we checked again the kernel messages and ...
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rPi invoking OOMKiller when there is so much memory free [migrated]
Whenever I'm doing intensive file operations, or just every now and then, I have my OOMKiller invoked and something killed. However, I seem to have a lot of free memory when this happens:
[nitz@saturn ...
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ECC DDR5: EC8 (80-bit) vs EC4 (72-bit) data integrity capabilities?
I have been looking info about ECC on DDR5 DIMMs (full ECC, non on-die ECC) and I have seen that there are two different types:
EC4, which uses 4 ECC bits per subchannel, for a total of 72 bits width
...
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Persistent Memory Redundancy?
This is the first time I've really dug into PMMs (Intel Optane), so bear with me if I'm a little slow on the uptake. It looks like you can configure these in either cache- or disk-mode, depending on ...
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What does lower case "g" mean in top output?
Can someone please help explain this, I have always used to interprete the "g" in top output to be size in Gigabytes even though the convention is to use uppercase "G" but now I am ...
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Process with very high RAM usage takes very long to stop using force stop in Task Manager
We have a Windows Server 2016 with around physical 700GB RAM. A colleague of mine ran a machine learning script in Matlab, that loaded 25GB of data in RAM and during the training the RAM usage ...
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Dell R720 Memory Configuration [closed]
I have an R720 with 2x E5-2650 v2, 8x8Gb Single Rank RDIMMs and 8x8Gb Dual Rank RDIMMs. I´m not sure how to install the DIMMs I´ve read that single ranks are faster than dual ranks so should I ...
user1013640
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How to troubleshoot multiple services and applications crashing at the same time?
Our application is run on multiple VMs (isolated instances). It comprises of a few services and ASP.NET website. This issue is happening on almost all of them to some degree.
It was found that the ...
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High RAM usage when providing large file on apache
I'm using Apache 2.4 on AlmaLinux 8. When I publicate a hundreds GB file and if someone starts downloading it, Apache RAM usage (especially VIRT) becomes bigger and bigger, starts swapping and ...
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Hyper-V VM wont start with more the 22gb RAM and produces Error Code 0x80070070
Currently got a server with 512GB of RAM and want to allocate 22GB of RAM to VM's on Hyper-V, currently have three machines, two with 22GB and one with 24GB RAM and are working fine but the fourth VM ...
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Server randomly shutsdown and blows fan at full speed with no video output
Cross-posting this from superuser because they suggested it might get a better response here
Specs
Model: HP Z230
CPU: Intel Xeon e3 1230 v3
RAM: 1x8GB DDR3 Non-ECC RAM
GPU: Radeon HD 8570
NIC: Intel ...
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Clear RAM Memory Cache and buffer on production Hadoop cluster with HDFS filesystem
we have Hadoop cluster with 265 Linux RHEL machines.
from total 265 machines, we have 230 data nodes machines with HDFS filesystem.
total memory on each data-node is 128G and we run many spark ...
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How can I approach system-wide, per-process resource monitoring on Windows Server 2016 Datacenter?
Context: My team hosts multiple applications on a Windows Server 2016 box. For planning purposes, I'm interested in profiling CPU and RAM usage per application over time. Most of these apps are .NET ...
BobRz
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Linux: How to check total number of bytes written to memory by a process
Note: I know about the commands like top but I am interested in knowing the number of bytes written to memory and also rewrites (number of times storing to the memory happened)
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kernel message + how to know if we need to replace the DIMM based on kernel messages
we have RHEL 7.6 server , and we noticed about the following kernel messages.
[1065085.048872] EDAC sbridge MC0: PROCESSOR 0:406f1 TIME 1676989040 SOCKET 0 APIC 0
[1065086.052107] EDAC MC1: 0 CE ...
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why SUnreclaim in slab cache grow extremely high but can be greatly free up through drop_caches?
We observe extremely high slab memory usage on a long running CentOS7(mount Lustre) server. With total 187G RAM, the slab cache used 110+G and most part is SUnreclaim.
Since slab = SUnreclaim + ...
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How to test Linux server for hardware errors?
I have a Debian 10 server that is randomly rebooting, though no error were written to journald. The server has rebooted 20 times in last 3 days.
$ journalctl --list-boots
-22 ...
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Is it safe to set RAM frequency beyond Intel's POR?
Memory in our SuperMicro servers runs on a somewhat lower frequency than it could and it seems to be artificially limited by the Enforce POR BIOS setting. SuperMicro warns on their website that "...
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How could I limit memory and cpu usage in Docker globally
I'm using Docker with Ubuntu in a development environment, but I noticed that docker can use all the resources of the host machine, is there any way I can limit this without having to configure each ...
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Linux: 100 Mi RAM free but no processes with high-memory usage
A Debian Bullseye server is using almost 100% RAM quantity (7.65G / 7.79 G):
But there are no processes with more than 0.0% memory usage
DEV root@postgres2 ~# free -h
total used ...
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Measure Memory Requests to RAM (Linux)
How can I measure the number of requests per second issued (not MB/s) to RAM on Linux?
Background: DDR4-2933 purportedly can issue 2933.33 MT/s and I want to ensure a program completely saturates the ...
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ESXI Linux Vm high memory usage but no process is using it
am facing a serious problem in our company server, we have Centos 7 machine on ESXI 7.0 with 26 GB of RAM, every week I have to reboot the VM to avoid full memory usage.
in the mean time I have 13 GB ...
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Debian x64 limited to 4GB Memory- why?
I have a virtual machine (running on a QNAP NAS) which is configured for 8GB of memory. But my Debian only uses 4GB of them.
See outputs:
root@backuppc:/# lshw | grep "*-memory" -A 40
*-...
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sharing the memory of a program between ec2 instances [duplicate]
Is it possible to combine the memory of ec2 instances? For example, let's say that I run a program that requires 2gb ram to run on one ec2 with 1gb ram instance,
can I somehow share that program's ...
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MariaDB - Contiunes to use more memory
We are running Maria DB 10.6.9 on CentOS and we are observing it continues to increase the usage of memory.
Server Specifications:
RAM - 128 GB
vCPUs - 48
Swap - 100 GB
We have configured ...
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zram-generator doesn't create zram device
I try to used zram-generator to create a zram device but it doesn't work.
I followed the steps listed in the README.md from the github repository.
Install zram-generator using one of the methods ...
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Tier 1 OEM Grade Memory?
We need to buy some memory for some servers. I have three quotes in total. One for memory from dell, one for Kingston memory and one for Crucial/Micron memory.
The one for crucial memory and Kingston ...
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Pink in memory htop
What does the pink color in memory htop means and how can I reset it?
You can see example here:
htop preview
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node in docker in aws instance is running out of memory, why?
My NodeJS application is running inside a docker container on an ec2 instance.
It is running out of memory way before the server itself is running out of memory. The container is only able to use ...
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Native memory allocation failed to map bytes for committing reserved memory
I have multi spring boot applications running on the same server, each one in a separate Tomcat. One of those services crasher because of insufficient memory.
# There is insufficient memory for the ...
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Problems with memory upgrade on ProLiant DL380 Gen10
I have a server ProLiant DL380 Gen10 Intel(R) Xeon(R) Silver 4114 CPU @ 2.20GHz with 2 memory bank of 32 GB for each one so 64GB of RAM in total. One of them is produced by Samsung and the other one ...
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Is Linux or something else eating my RAM? Memory usage doesnt add up
I've read quiet a few topics on RAM usage here on serverfault and linuxatemyram.com, but none seem to provide insight into what's happening on my machine
top - 17:42:31 up 8 days, 10:23, 3 users,...
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Memory errors in dmesg, do I need to replace a DIMM?
The following errors show up in dmesg 10-20 times per day:
MCA: Bank 5, Status 0x8c00004000010092
MCA: Global Cap 0x0000000001000c10, Status 0x0000000000000000
MCA: Vendor "GenuineIntel", ID ...
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Using DDR4 Optane memory in Asus Pro WRX80E Sage WiFi motherboard
I am trying to use DDR4 Optane memory in WRX80E SAGE WIFI motherboard with AMD Threadripper 3995WX processor but after connecting it when I turn on the machine it does not boot I tried with a DIMM ...
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BIOS/OS reporting different memory to dmidecode
I have a SuperMicro server in production with 8x 16GB dual rank DDR3 ECC registered sticks installed (128GB). Had a bunch of ECC errors on one stick one day that caused issues for a few minutes plus ...
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How to monitor memory usage of all processes individually (in Windows)
I looked through the forum suggestions for my question but they were all Unix-based.
I'm trying to troubleshoot a Windows Server 2019 system that keeps locking up due to a "lack of resources"...
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High iowait, swap nearly always fully in use
I'm often experiencing slowness on a large server that is used by several users simultaneously, with many CPUs (72) and a decent amount of ram (125gb).
Granted, the server runs a lot of stuff so gets ...
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DIMM cards + what is the meaning of - Configured Clock Speed
we add the following DIMM card in our DELL server ( 16G memory ) , OS is RHEL 7.6 version
as we can see the speed is - 2400MHz
but the - Configured Clock Speed: is only 1866MHz
so I guess that value ...
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Google Cloud GKE evictable vs non-evictable memory
we have few pods inside Google Cloud K8S GKE and google metrics is reporting high memory usage in some of them but I cannot find why. Inside pod everything looks fine.
We are using GKE version 1.21.13-...
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Linux: cuda (pytorch) does not allocate available vram
I am trying out pixray/clipit but cuda fails to allocate the remaining 1GiB of my graphics card.
My graphics card is "Nvidia GTX 1660 super" which has the same amount of RAM as the "...
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sar high memory commit %
I've noticed that there's a high percentage of memory committed on this server during a specific timeframe. Although, memory usage still looks fine overall from sar output. I don't see 'out of memory' ...
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dmesg tells 1G out of 128G available?
I have a 128GB RAM server, kernel 4.18.0-305.7.1.el8_4.x86_64,
"dmesg | grep Memory" outputs as follows:
[ 0.000000] Memory: 1282732K/133708404K available (12293K kernel code, 2225K ...
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201
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Ring Buffer For Kubernetes Pods
Is there a setting that we can use as an equivalent to max-buffer-size (https://docs.docker.com/config/containers/logging/configure/) to configure ring buffer for Kubernetes Pods Containers?
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How can I see what causes a MongoDB memory spike?
I am running MongoDB 4.x on Linux in a clustered setup (3 replicas), and sometimes memory inexplicably spikes (>10% sudden memory consumption increase on a 64GB RAM machine by the mongod process) ...
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RAM: Quad channel and Single/Dual Rank RAM?
I am struggeling to understand the link between Rank and Channel
As far as I understand e.g.
E5-2680V4
supports Quad channel, means can access 4 channels simultaneously, which results in optimal cases ...
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What are the consequences of RAM speed to high on a Proliant DL385 G7?
Rendering the 3D model of an optical lens or mirror with openSCAD can require huge amount of RAM, and for this use, I have maxed the RAM on a Proliant DL385 G7 but the RAMs I got were PC-14900: ...
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311
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linux/ubuntu - why "free" memory is not available?
Ubuntu 18.04.6 LTS
All resource intensive tasks run in docker.
Server with ~320gb memory.
Problem: system is very unstable due to "cannot allocate memory" errors, but there is a lot of free ...
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Read LTO memory chip with a drive older than the tape
That is the question. Can I read the data inside the memory chip of a lto7 tape using an lto6 drive?
I have only tried ITDT on windows but it rejects to do anything with the tape.
Just asking in case ...
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