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

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Why Linux free memory is not just the 'free' of '-/+ buffers/cache'

I learned and always think that linux free memory is the "free" of "-/+ buffers/cache" You can get this knowledge from lots of website. Meaning of the buffers/cache line in the output of free http://...
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2answers
36 views

How can i limit a user to use no more ram than 1gb in window 2012 r2 server?

is it possible to to limit a user ram? No more ram than 1gb in window 2012 r2 server? One of of my user is using about 3GB ram
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18 views

Memory banks unbalanced

My team and I at work have inherited 2 X G7 DL380's. From looking over the iLO I can see that the memory setup is odd. PROC 1 DIMM 1G Not installed PROC 1 DIMM 2D 2048 MB 1333 MHz PROC 1 DIMM ...
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0answers
13 views

Weird memory usage in Oracle Linux [duplicate]

I have a oracle linux 7 running Pentaho (an java application). This machine has 23 GB of ram and improve pentaho performance I'm trying to configure java to alocate 10 GB of RAM to pentaho ( -...
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1answer
27 views

How to find which memory has CE error?

I think I have a memory in my server which has errors and I am wondering how I can find which one it is. Server model: Supermicro 6072R-EN3RFT RAM: 128 GB CentOS 7 with latest updates installed ...
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3answers
7k views

How do I monitor CPU and Memory usage with Nagios?

Is there a plugin that does that? If yes, how do I set it up? I have Nagios on a single server setup (nagios monitoring the box where it's hosted), so I don't need any fancy way of getting that info ...
3
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1answer
133 views

Ubuntu Server 15.10, process not being allowed to use all physical memory, kswapd0 using 100% CPU

I have a 24-core server with 64G of DRAM, and it's running Ubuntu Server 15.10. I am getting some strange behavior with respect to swapping and physical memory use. I never had this trouble until I ...
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2answers
35 views

Linux - Logging process list during high memory usage

I'm trying to diagnose occasional spikes in memory usage on a Linux server. If the spikes are high enough the OOM Killer kicks in, which results in /var/log/messages containing a useful dump of the ...
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7answers
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Windows Server 2008 R2 Metafile RAM Usage

I have a server which runs Windows Server 2008 R2 x64 with 4GB of RAM which hosts around 2-3 million files, the majority of which are image files. Over a course of a week, I have noticed that ...
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0answers
14 views

server capabilities for 2000 active users [duplicate]

I have a CentOS 7 with Apache2 and a Drupal application with a MariaDB database. The application must be available for 2000 users and sometimes about 1800 users will be using it simultaneously. I was ...
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2answers
145 views

MySQL - high RAM usage

I have VPS with 2GB of RAM running Ubuntu. There are three sites using database on this server - two on WordPress and one on custom script. All of them get max few hits per day. MySQL always had ...
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1answer
17 views

Fujitsu server memory modules - registered ECC, but still won't POST

I have a Fujitsu TX150 S7, for which I want to upgrade the memory. I thought that would be simple enough, but apparently that is not so. The manual for that server states the following: Memory slots:...
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0answers
9 views

Less RAM Aailable than installed on Centos 7 [migrated]

I can't seem to figure out why do I have less RAM usable than installed. I am running 64bit Centos 7 with 1 RAM module of 4096MB on a Lenovo x230. Some information from the machine in question: $ ...
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2answers
33 views

InnoDB (Not Really) Out Of Memory?

MySQL keeps on crashing on my server. I'm running several dozen sites using VestaCP and haven't had issues with MySQL for months. I'm running on a Linode VPS with 12GB of Ram, normally 9GB of it ...
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1answer
1k views

1GB VPS - Apache Worker MPM - FCGID - Max concurrent connections - RAM CAP

I have spent a week or two researching and setting up my server to run Apache with the Worker MPM and FCID. I am trying to optimize it to allow for the most concurrent connections possible. It has ...
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2answers
35 views

HP Proliant DL380 Memory Error

Just bought 8x4GB memory DIMMs for HP DL380 G5 and after removing 8x2GB sticks and placing the new ones server doesn't boot and lights on all DIMMs error led. Memory is the correct PN from HP for this ...
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0answers
19 views

Nvidia Pascal architecture: DMA Size / maximum amount of host system RAM?

We are planning to build a pair of multi-GPU Linux servers for machine learning and data science tasks. Per our requirements, we need to put a lot of RAM in these machines; we're planning on 24x 64GiB ...
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0answers
6 views

PC shuts down every once in a while [migrated]

My specs are, AMD phenom x6 1100t processor, 2x 4 gb ddr3 ram, and a gigabyte 78LMT-USB3 motherboard. When trying to play simple youtube video my machine shuts down after a few minutes. Even when ...
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0answers
10 views

Impact when Free MEM at 0% [duplicate]

I have server with Red Hat software. Linux mtymastera 3.10.0-123.el7.x86_64 #1 SMP Mon May 5 11:16:57 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux Command free -m shows [admin@mtymastera ~]$ free -m ...
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2answers
101 views

Does it involve network to copy a file within a NFS share? [closed]

I am assuming the following ways to copy a file with in a NFS share: Process 1: The client requests for the data to be copied from NFS share (if cache is not there) and the chunks of data are ...
0
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0answers
12 views

Minimum server requeriments for ISP checking and redirect [duplicate]

I need to set up a server which will use a database for checking the country associated to the IP and redirect accordingly. The server has to handle about 100.000 request a day, and that will be the ...
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4answers
3k views

free shows more memory used than top process total

UPDATE: This was being caused due to a known issue with nss-softkn. See this article: https://www.splyt.com/blog/2014-05-16-optimizing-aws-nss-softoken When I run free -m from my centos 6.5 box I ...
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1answer
59 views

Understanding Java memory behavior in Docker

Our current Kubernetes cluster running in Google Container Engine (GKE) consists of n1-standard-1 machine types (1 virtual CPU and 3.75 GB of memory) running Debian GNU/Linux 7.9 (wheezy) which is ...
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1answer
23 views

memory fragmentation on nas

I have a qnap nas unit that I was trying to create an additional iscsi target on, and the creation process fails. Im not trying to do anything I haven't done on other identical units, but this one has ...
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0answers
10 views

Memory usage doesn't add up [duplicate]

I ran top command to check memory usage, I see that the memory left is so little (from number at the top), less than 10%, which means 90% is used. However, all the process's memory in the below table ...
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3answers
2k views

HP Proliant ML110 G6 RAM Upgrade Issues

We have an HP Proliant ML110 G6 server running here at work which presently has only 8Gb RAM installed. The RAM presently in the system is Integral IN3T4GEZBIX or in other words PC3-10600 unbuffered, ...
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2answers
45 views

Does RAM consumption use Network Bandwidth?

I have created a software which is being accessed by remote users through RDP (Remote Desktop Protocol). Application Platform : C# 3.5 - Windows Form Current Server that i am using : Windows Server ...
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0answers
32 views

Calculation of Xeon server memory bandwidth

I am looking at a dual socket server based on the Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz The configuration looks like this. 4 memory channels per socket DIMMs are 8x32 GB DDR4 2133/1866 modules ...
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6answers
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Slow Memcached: Average 10ms memcached `get`

We're using Newrelic to measure our Python/Django application performance. Newrelic is reporting that across our system "Memcached" is taking an average of 12ms to respond to commands. Drilling down ...
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1answer
33 views

Massive /dev/shm RAM drive unused, safe to shrink?

today I ran the command df on my CentOS 6 - MySQL/Sphinx database server linux machine (with 80GB of RAM). Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 ...
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page allocation failure - am I running out of memory?

Lately I've noticing entries like this one in the kern.log of one of my servers: Feb 16 00:24:05 aramis kernel: swapper: page allocation failure. order:0, mode:0x20 This is what I'd like to know: ...
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2answers
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HP ML150 G6 upgrading RAM/CPU beyond specs?

I am being told that some limits on some HP servers can be crossed. Do any of you have any experience with that? A ML150/G6 is limited to 48GB RAM but I have been talking to a German company that ...
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7answers
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How to find memory usage of individual Windows services?

Task Manager shows the overall memory usage of svchost.exe. Is there a way to view the memory usage of individual services? Note this is similar to http://serverfault.com/questions/2786/finegrain-...
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27 views

Apache maximum memory size per child

Running apache 2.0 on ubuntu 14.04 (MPM prefork), I'm seeing multiple child workers with variable "RES" megabyte values (as expected). While I have plenty of RAM to handle all of these processes (i.e. ...
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Dell poweredge r620 Memory Population

In my Dell poweredge R620 server i install 8GB 12 Memory stick in slot B1-B12,but some memory stick not showing(B5,B6,B9,B10),server usable memory is 64gb now.Plz suggest me RAM accurate population. ...
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2answers
189 views

PHP OPcache is resetting cache automatically

I started using the built-in PHP OPcache of PHP 5.6 and am facing a problem now. I set it up to use up to 1 GB of RAM, which is highly enough for my websites but it never get get it to use the full 1 ...
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1answer
26 views

Using DDR4 SDRAM in a Supermicro X10SRL-F Mobo that wants DDR4 ECC SDRAM?

Hey so I got my hands on a Supermicro X10SRL-F motherboard, and bought myself a Xeon off ebay, but I neglected to get any ram, (money reasons). I figured however, that I might be able to pick ...
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1answer
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Is NUMA always completely NUMA or are there also hybrid systems?

I am working on a high-end server application where performance is critical. Given that servers are often employ NUMA-architectures, the server application also uses NUMA-aware memory allocation ...
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3answers
92 views

virt-manager: Partioning the available memory

I have a hypervisor which uses kvm and virt-manager to handle the virtual machines. The hypervisor has 6GByte of memory. If I add a new virtual machine I don't know how much memory is still free. ...
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0answers
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LSF nodes die after exhausting all memory

I have a LSF cluster and experience the following problems. After some time, random OS processes start to die (they become zombies or defunct), and the LSF nodes do not report any troubles back to ...
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5answers
6k views

Any way to reduce bind9 memory footprint?

I am running my own Authoritative DNS on bind9 for like 5 of my domains with little traffic. I am running them on 2 separate VPS servers (so every Mb of memory costs me some $x2). Is there any way to ...
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1answer
431 views

I shouldn't use both RDIMMs and LR-DIMMs on the same motherboard, right?

I tried to use on the same motherboard at the same time: Three LR-DIMM memory sticks, Four RDIMM memory sticks. The server refused to start; when I use either three LR-DIMM sticks or four RDIMM ...
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8answers
5k views

Do I even need a swap partition with Linux?

I have a core 2 laptop with 4gb of ram. I use the machine for browsing, network stuff and simple programming. (I use this machine to host a small ftp and web server semi-occasionally.) Would there be ...
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11answers
8k views

How big should the swap partition be?

for some years, I've read that it's a good idea to create a swap partition having the double space of my RAM. does it still apply today? or this isn't needed anymore? I have a server with 8 GiB of ...
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3answers
523 views

80% memory utilization on server- is this just caching?

Memory utilization is very high on this 2008 R2 server, but I think it might just be caching RAM- performance on the server is fine and CPU utilization is very low. It is running DFSR which I believe ...
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Can't increase Java heap in Debian

I'm setting up an environment to run some web apps developed in Grails, and deployed in Tomcat. I made the default configuration and the first web app deployed just fine, but after logging in, the ...
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0answers
24 views

AWS Elastic Beanstalk Instance - debugging low CPU but high memory usage

I'm running a small t1.micro instance on Amazon Elastic Beanstalk. The app itself is a Java web server, uploaded via a .war file, that responds to requests from a remote Heroku web app. Upon ...
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110 views

Kernel fails to assign memory in any Linux Distro [on hold]

I have a motherboard: X11SBA-LN4F/F. After install CentOS, i have error in log: May 2 21:47:48 ll-226 kernel: pci 0000:04:04.0: BAR 14: failed to assign [mem size 0x00200000] May 2 21:47:48 ll-226 ...
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38 views

Linux process resident + buffers + cache + free less than total

We are using Ubuntu 12.04 on real hardware: $ uname -a Linux test-precise-03 3.13.0-85-generic #129~precise1-Ubuntu SMP Fri Mar 18 17:38:08 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux And are unable to ...
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3answers
5k views

How to find faulty memory module from MCE message?

I am trying to understand MCE message to find which memory module is bad on a server. This message appears in /var/log/kern.log in one server that freezes two times today. Apr 13 22:39:22 mbox kernel:...