Questions tagged [memory]

Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.

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Total memory varying between identical nodes

On a cluster with multiple identical server nodes (same hardware including same brand and model for the DIMMs, same BIOS and firmware versions), same OS and same kernel options (PXE boot of the same ...
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High memory usage, no process responsible (Linux)

I am running a server with CentOS 7. In the past, it has crashed due to low memory, so I'm trying to investigate memory usage. Currently, I see a high memory usage and no CPU usage, so I'm trying to ...
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Enable PAE for Windows 10 pro to use more than 4 GB RAM

I'm having a relatively new hardware (i5 CPU x64) with a legacy 32 bit Windows 10 install. It is running older company software so the upgrade to 64 bit is not practical for several reasons. I know ...
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Memory limit of LaserJet Printers: stick to the spec or okay to surpass memory size when choosing Memory Expansion modules?

This is a technical question about what would happen if one adds a 512MB memory expansion module to the HP Color LaserJet CP5225, or any other recent current modern Laserjet, while the manual states ...
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When to upgrade RAM based on free output

I have a java application that runs on a Linux server with physical memory(RAM) allocated as 12GB where I would see the normal utilization over a period of time as below. sys> free -h ...
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Multiple uncorrectable ECC errors on multiple DIMMs

I have a Supermicro X8DT6 system that has suddenly developed a high rate of uncorrectable ECC errors. The system was running error-free until just a few days ago, and now it is experiencing ...
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RAM compatibility issues with Intel motherboard

I have a computer with an ASUS C422 SAGE 10G motherboard and a Xeon W-2125 CPU. It has 4 Kingston 16 GB DIMMS with ECC installed. Recently, I wanted to upgrade the memory, and ordered 4 new 32 GB ...
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apache httpd using a lot of RAM memory and producing spikes in short time intervals

I have a problem with one of my servers. Web server works well in 'normal' time period but one or two times per day there are spikes in RAM memory usage. I put the Zabbix monitoring tool there, and ...
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Why does server throw Q Code 19 only when both CPUs installed?

I've got two identical intel CPUs in an Asus board with one stick of ram each. On power up, board immediately throws code 19 ("SB initialize before installed memory"). I've tested each CPU ...
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Fedora Server 34 crashes randomly every few minutes on HP ProLiant DL380e G8

I am unfortunately having a problem with my HP ProLiant DL380e G8 server running Fedora Server 34. I suspect these are memory errors or a DIMM being/going bad, however I'm not sure. Feedback is very ...
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Are Samsung B-Die and C-Die Compatible?

I am building a NAS (running TrueNAS/FreeNAS) using a SuperMicro A2SDi-8C+-HLN4F motherboard. I ordered 2 sticks of this Samsung C-Die RAM from a supplier but they could only send me 1 as it was the ...
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Websites getting down every day on VPS Server

I have a VPS server using 4 CPU and 4GB RAM shared across 10 PHP websites of which 2 website(website and set cron jobs) are using sometime more than 6 CPU core of 4 CPU core available. And because of ...
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What does buffered, cached, free, slab and used mean when monitoring memory use on GKE?

I am running some compute nodes on GKE and when I look on their memory usage in metrics explorer I see: It is clear to me what used and free mean. But how about the other states? The official ...
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htop does not show the real memory usage

I'm having a server running around 250 docker containers. Once they are all up and running, htop shows a 32-33% RAM usage as shown below: I've also installed netdata for a more granular monitoring, ...
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Will 'Desktop' RAM work in a Rack Server?

I am very new to Rack servers and am exploring options for RAM. I am looking at the Dell PowerEdge R710 I have found this PDF which explains memory requirements. It however does not mention ECC, ...
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How to image memory on FreeBSD for Volatility

How do I image memory on FreeBSD so I can analyze it using memory forensics tools like Volatility ? Are you restricted from dd /dev/mem ?
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What does the TW mean in NANYA RAM?

I brought a used R710 which came with 32GB of ECC Nanya RAM, all of the RAM sticks are identical (NT4GC72B4NA1NL-CG) 4GB RAM sticks, however, they have a number next to them that is different, e.g: ...
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Large file download from self hosted website

Sorry if the question is simple, I am new to web development and self-hosted servers. We have a self hosted website, which is supposed to have a button to download a large zip file (1 GB). For this, ...
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How to serve a website on a linux/apache web server directly from RAM cache?

My server has hundreds of GB of fast ECC RAM. Most of it is not being used. One solution to a faster website is to use an SSD, but a similar solution would be to use the RAM. The problem with SSD is ...
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Stop NGINX from locally caching a directory

So, the issue I am currently facing is that NGINX on my system keeps caching huge video files in memory when a HTTP request is made. This is causing NGINX to be using 20GB+ of memory and me having to ...
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CentOS 8 misses a significant amount of RAM on VPS

CentOS 8 is running on a VPS having 1GB RAM. dmesg shows: Memory: 216012K/1048040K available So I believe BIOS sees 1,073,192,960 bytes. Then, as free -b reads, RAM has 997,236,736 bytes in total. ...
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How can I force Proxmox resident set size (RES) memory to return to node?

I am running Proxmox and have noticed that multiple VMs that have Ballooning enabled are reserving memory even after they no longer need it and the nodes RAM usage is above 80%. This is causing other ...
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Finding the source of a (memory read) hardware error

When logging into my server, I'm seing lots of these errors: Message from syslogd@****** at May 31 20:06:59 ... kernel:[500570.908383] mce: [Hardware Error]: PROCESSOR 0:206d7 TIME 1622484419 SOCKET ...
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Reasonable VMware Memory Overcommit Ratio? [duplicate]

As a "rule of thumb" what is considered a balanced VMware memory overcommit ratio? I could find official guidelines for vCPU:pCPU ratio but not for vMemory:pMemory.
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acpi package has zero elements CentOS 7 boot error

I hope I asked this in the right StackExchange site, didn't knew where to post. I have this boot error (attached), I can't understand much from it, acpi package has zero elements , etc. I had Centos 7....
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How can I optimize ksm for my machine - 100% CPU usage and limited KSM Sharing (Proxmox)

Proxmox Node Stats KSM is constantly at 100% CPU usage which makes me believe I need to optimize the /etc/ksmtuned.conf configuration but I am not exactly sure what to set it as for this machine. As ...
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Libvirt/KVM support for partiitoned memory

Does KVM/Libvirt support partitioned memory? Is it possible to make sure that two VMs do not have memory-mapping that overlaps?
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Can't track memory usage of MySQL docker container

I have a MySQL instance as a docker container managed by Hashicorp Nomad on an AWS EC2 t4g.small instance. I need to monitor MySQL's memory usage because I have experienced OOM kills after ...
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Latency of memory accesses via interconnectors

I'm trying to compare latencies of different node interconnects for a cluster. The goal is to minimize the memory access latency. I have obtained some benchmarks regarding one of the hardware ...
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How do i schedule the built-in windows memory diagnostics from a server core installation?

How do i schedule the built-in windows memory diagnostics from a server core installation? mdsched.exe does not seem to be included in Server Core 2019
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enough free pages but high number of major page faults and page reclaimation

We find that for some servers io disk read is very high. We also notice that there are many major page faults on those servers. But we checked the /proc/zoneinfo, there are enough free pages. Here is ...
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HP Proliant DL120 G6 Memory issue

I bought new RAM for my DL120 G6, but with it installed it does not boot. I thought it might be incompatible so I bought another batch of memory but same result. I get no display output and no ...
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PowerEdge R440 Mixed Memory configuration

I have one Dell PowerEdge R440 The server has 12 DIMM: 32GB 2Rx4PC4-266V-RB2-12(HMA84GR7JJR4N-VK) [A6]-[A5]-[A10]-[A4]-[A9]---CPU0---[A7]-[A1]-[A8]-[A2]-[A3] 32Gb 32Gb 32Gb ...
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Why cannot use buff/cache?

It seems mysqld allocates too much memory as buff/cache: free -m total used free shared buff/cache available Mem: 990 448 96 36 ...
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disk read io very high, but no process perform io read

We have experienced a very strange problem. The load of the server machine is very high due to high disk read io. But the processes running on this server do not perform any disk read operation. We ...
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How do the filepaths work for websites with multiple storage drivers/servers?

So I am developing this site on my localhost and currently when I 'upload' a file, I have set the file to be stored in an uploads folder, with sub-folders being generated consisting of the first 2 ...
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Changing the RAM of lenovo workstaion from 8GB stick to 32GB

I have Lenevo P700 It supports this memory . This is ram which is currently inside https://postimg.cc/Ny2WQR8w THis is what i find from google it supports 32GB https://www.compuram.biz/memory/lenovo/...
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Memory module error affected OS performance

One day, one of the memory modules started producing correctable memory errors. Then, the operating system began to slow down, and the Oracle database stopped working correctly. Also, I don't use ...
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Is it possible to set vm.overcommit_memory =1 only for specific containers?

So, I'm running a container that is showing this in the log: WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = ...
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Proxmox kills VM when RAM usage grows

I don't know if this stackexchange site is the most suited to my question, please flag this for mods to move the question elsewhere if it isn't. Context & issue I installed Proxmox on a physical ...
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Reducing PostgreSQL memory consumption

PostgreSQL chews up 4 GB on 500 concurrent connections? I need to get it below 2 GB, or i have to get a more expensive server :( Tried: temp_buffers = 800kB work_mem = 1MB max_stack_depth = 1MB
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unusually high memory consumption by the kernel

I have an issue with some of my VMs. They are used as workstations for our designers, and run Centos 6.10. After a month of use, they seem to run out of memory for some reason. > free -m ...
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How to enable more than 4 GB in SQL Server X86 under Windows X64

I have read here that I can use more than 4 GB in X86 SQL Server Systems and X86 Windows servers via /PAE option, but my scenario is different. I have a 32 bit SQL Server std in a Windows 2019 X64 std ...
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Where is my memory being consumed? [duplicate]

I have a Ubuntu 20.04 server which is reporting relatively low free RAM: top - 11:28:31 up 5 days, 20:12, 3 users, load average: 0.18, 0.26, 0.27 Tasks: 268 total, 1 running, 267 sleeping, 0 ...
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Windows 2016 rebooting randomly bugcheck dump file

Windows 2016 server reboots randomly, about once a week. Any ideas? here is the memory dump log Bugcheck Analysis * * ...
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What power rail (12, 5 etc) powers RDIMM memory

TLDR: is RDIMM memory powered by 12v 5v or 3.3v rails from standard 24-pin 2-EPS ATX PSUs? I understand this could vary by manufacturer, but on my Super Micro EATX motherboard I am attempting to power ...
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confused about buff/cache and available memory metrics

I'm totally confused about the memory metrics provided by free command in linux. currently I receive the following metrics: total used free shared buff/cache ...
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Does add more memory RAM decrease I/O wait?

My server is Ubuntu KVM and has 2 cores, 4GB RAM, and I use HDD, at moment I can't swap HDD to SSD. I found this answear (https://unix.stackexchange.com/a/463819/351968) saying that adding more memory ...
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How to check that docker-compose did resource allocation

I'm trying to allocate resources inside docker-compose: version: '3' services: db: # omitted for brevity my-service: image: my-image restart: always ports: - "8080:8080&...
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Application specific system tuning

I'm running an application under wine (Navico insight map creator) on multiple machines and am in the process of benchmarking and optimizing the performance of this process. I find the following ...

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