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

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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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13 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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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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1answer
13 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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2answers
34 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
16 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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2answers
27 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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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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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
94 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 ...
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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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1answer
46 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 ...
2
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0answers
31 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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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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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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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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1answer
21 views

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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1answer
22 views

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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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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32 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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143 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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40 views

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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23 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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101 views

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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3answers
91 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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46 views

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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43 views

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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495 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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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
213 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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2answers
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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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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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1answer
49 views

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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63 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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41 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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88 views

MySQL (MariaDB) crashing

Good morning - I have reviewed a previous post regarding changing the performance schema to "Off in the configuration settings. It looks as though our configuration is already set to this. So not sure ...
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30 views

Real memory usage on Linux and Private_Dirty

On Linux, is using Private_Dirty value from smaps a good way to measure real process memory usage? Thanks
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1answer
21 views

Monit is reporting low memory use

Monit is reporting very low memory use that is not consistent with actual use. If I look at Monit, under System I see "5.7% [918.0 MB]" though the real scenario is very different; total ...
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votes
1answer
104 views

Install new G Skill Ripsaw X RAM into HP Proliant ML10 v2 causes black screen and long beep [closed]

So I have a HP Proliant ML10 v2 and 3x4Gb G Skill Ripsaw X DDR3-1600 PC3-12800 1.5V. The computer does not show POST and then proceeds to a long beep. I removed the new RAM and boot and then ...
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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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2answers
146 views

Why is this server reporting high memory usage

It seems that given the memory percentage of the processes listed, my server should not be at 98% memory usage. Why is the cumulative memory usage so high? top - 14:34:50 up 14 days, 22:54, 3 users, ...
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47 views

sar -r %commit very high but only utilizing 3GB of 8GB Ram

This is probably lack of understanding on my part, and maybe too general of a question (if I can clarify further please let me know) but I am wondering what this could mean. I have the following ...
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16 views

aws ec2 instance memory utilization in cloudwatch

I have been trying to get memory utilization for aws ec2 instances through an IAM role with permissions to read and write memory utilization metrics to cloud watch. So can any one help in creating a ...
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9 views

libvirt-Can I use 'virsh save' this command only get 'vm physical memory'?

I use 'virsh save ' to create an image,but I only want to get 'vm physical memory'.I don't know how to do it now.If you know the answer please tell me.Thanks!
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2answers
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Upgrade workstation memory non-pairwise [closed]

I have a HP Z420 that has 4 DIMM's installed of 8GB PC3 14900E memory (8 slots total). I have an option to install one more 8GB DIMM but I was concerned that installing memory in a non-pairwise ...