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

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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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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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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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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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web server (apache2, nginx) stopping sporadically

I am running a wordpress website on a small vps of 512 MB RAM running Debian 8.1. According to WP statistics, the website has had 400 visitors making 3000 total visits in the last 30 days. In the ...
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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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25 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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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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31 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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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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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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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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25 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
177 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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22 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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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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89 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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31 views

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
348 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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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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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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491 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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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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Kernel fails to assign memory in any Linux Distro

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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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:...
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“Unballooning” RAM that's been ballooned by VMware

Given the constrained RAM situation described in this question, what is the cleanest method (manual or programmatically) to: Identify VMware virtual machines whose RAM has been reclaimed by the ...
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Java package moved to new Windows server is throwing a memory error - “Attempt to access invalid address”

I have been tasked with moving an existing Java application to a new server. The old server is Windows 2008 R2 64-bit, running Java 32bit version 1.7.0_80. The java memory heap settings must be -...
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Can I extract a private key out of Tomcat's memory?

I'm running Tomcat 6. I was messing around with my keystore in order to try to fix some certificate chain problems, and I accidentally rm'd the production version instead of the .new file I was ...
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428 views

How to load balance with respect to memory, disk usage, and other attributes

I've found load balancers such as NGINX but those seem to work only by keeping in mind CPU usage and network traffic. How would I load balance with respect to other variables such as the amount of ...
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Unable to find high RAM utilization on Linux server [duplicate]

I am having high RAM utilization issue with a dedicated Linux server used for shared hosting purpose. I am sharing the outputs of some commands which will make the issue more clear. root@live [/proc]...
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2answers
198 views

CentOS reporting lower total memory compared others in AWS

I have a t2.medium instance running in AWS on the CentOS 7 AMI and I noticed in top and free it's basically reporting 3.45GiB of total memory. If I launch an instance with the AWS linux (I think I ...
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ECC CE (Correctable Error) occuring every 5 minutes exactly

On one of our computing nodes I am getting ECC CE (correctable errors). What is a little bit peculiar about is is that errors are not massive, just a single occurrence exactly every 5 minutes. ...
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2answers
413 views

w3wp/asp.net High memory usage - Is this problematic?

We have a asp.net (.net 4.0) webapplication that is installed in several environments. In most environments, the memory usage is somewhere around 1GB. However, we have one environment where the memory ...
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1answer
35 views

Running on two servers vs. one with more memory? [duplicate]

I currently have one small VPS which I am using to host a Wordpress site (Nginx,PHP5,MariaDB). I have started to run into some memory issues (DB crashes) indicating it's probably time to move to a ...
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2answers
54 views

Adding additional memory in HP server

I am planning the installation of additional memory in a HP DL360 server. Currently, this server has two processors and 8 x 8GB stick of RAM. I have not got access to the server yet so I will assume ...
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2answers
30k views

Best Mysql cache settings for 8gb RAM dedicated mysql server using only Innodb (5gb database)

I'm a pretty big noob when it comes to setting up mysql for performance. And honestly I'm not worried about the fine tuning to squeeze every last bit of performance out of mysql, but I do know that ...
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1answer
117 views

How to allocate more resources to Node.JS process?

I'm not a (very good) back-end developer so understanding processes and memory are a little about my pay grade. I'm currently building an app using the MEAN stack. I have a separate Express server ...
0
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1answer
24 views

Increase openfire memory to larger values

We use OpenFire for XMPP messages. We have some memory issues(OutOfMemoryError), and therefor we would like to increase memory. I know how to increase memory using VM options and we were able to ...
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Intel modular server - blinking yellow led - clear,confirm the warning

Masters, Today we got tow warning from intel modular server, as you see below. How to clear this warning and how to stop warning led blinking? (i'm sure there is no problem, but can't clear/confirm ...
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Apache process memory footprint - disabling modules has no effect

Apache processes running on my server are using much more memory than I would expect. OS: Centos 7 RAM: 4GB mpm: Pre-fork php: mod_php My httpd.conf includes the modules in the following manner: ...
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2answers
51 views

Capacity management - what metrics/KPI for CPU and RAM?

Context: business applications servers What are good metrics/KPI for measuring CPU usage and performance? I think that things like %usage are not really relevant (it's not because my PC uses 100% CPU ...
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Ubuntu: Postgresql not using ram

I have a 4GB 2 core Ubuntu droplet that doesn't seem to properly make use of the RAM and CPU. I have tried to optimize the settings in postgresql.conf to match the instance with (based on pgtune): ...
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39 views

Configuring jobqueue for Memory changes in Dell DRAC via commandline. Need FQDD for memory

Have a Dell R620 Server with iDRAC version 7. Has 128Gb of RAM/Memory. RAM/Memory is set in Mirror mode, so effective is 64Gb. Want to switch Memory mode to Optimizer so that 128Gb is available again. ...
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5answers
4k views

Would upgrading RAM in a HP LaserJet printer improve its performance?

Would RAM upgrade for an HP 4050N LaserJet printer matter? We have this real workhorse of a Laser Printer. It's an HP 4050N and it's been in use for many years. In the past few years, I've noticed ...