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

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What kind of ram usage is bad ram usage?

We have been monitoring our Debian servers' ram usage in order to receive alerts when the ram usage goes over a certain % threshold. However, a high % ram usage is not necessarily a problem can even ...
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12 views

Var folder maxing out /dev/mapper/vg00-var

Over the past few years we have had multiple linux servers have the same problem time and time again, our /dev/mapper/vg00-var folder max out at 100%. which means all sites on the server die. We have ...
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44 views

Skimp on CPU or skimp on RAM? [duplicate]

I'm upgrading to a dedicated server, and I've decided between two servers, but I don't know which to choose. The differences between the two configurations are: Server 1: Intel Xeon W3520(4 cores/ 8 ...
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8 views

digitalocean server cpu is 75% all the time

I have a nice server in digital ocean, it's the 1GB ram size. It has installed: php, mysql, nginx, supervisored, beanstalkd as I installed. But the problem is the I see that all the time the cpu is ...
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26 views

Increase of Virtual Memory after update of CentOS7

I have made system updates on CentOS7 and now my Virtual Memory is full used. Before the updates the virtual memory was completely empty/swap Why? Is it a problem? How can I decrease the virtual ...
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memory high issue on RHEL server?

18105 /wm/www/tmmy/ 2.2 1128256 1683020 16961 /usr/sbin/httpd 2.4 1201668 1692788 27746 /usr/sbin/httpd 2.4 1217296 1701612 31519 /usr/sbin/httpd ...
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35 views

Is there a cost effective way to break 32GB limit of Windows Server 2008 R2? [duplicate]

How to break a 32GB limit of Windows Server 2008 R2? I've got 4-years old SQL server. I would like to add RAM over 32GB without having to reinstall whole OS (this is bare metal installation). Can I ...
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38 views

See what's filling up the server memory? [closed]

Our site goes down more and more often. Every other day. The server response time is too long and it just goes half blank. If I look in the browser source code, I see: Could not connect to the ...
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2answers
49 views

Small business server - ECC Memory… really? [closed]

We need a server for a small businesse with less than 10 client workstations. It runs a database for trucking dispatch (Axon). We plan to install a Windows 8.1 Pro machine to act as the server. Do we ...
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44 views

RAM usage by Apache server in Wordpress Site

I need some advice as I have a VPS OpenVZ with 1GB Ram and 1GB burstable. I am running a site on wordpress and my site users are about 2000 per day. My DB size is about 90MB and I am using latest ...
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3answers
124 views

Swap being used when RAM is almost half free

Today I noticed that I found the following thing: As you can see the RAM is almost half-free and the usage of swap space is very high. From my textbook knowledge, I used to think that Linux OS ...
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1answer
31 views

How do you know when server memory needs to be increased?

I have a VPS running a few websites for clients. Running free -h shows the following: ~$ free -h total used free shared buffers cached Mem: 994M ...
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2answers
102 views

Hot-remove memory in a Linux virtual machine

Linux supports hot-adding memory when running as a VM guest, in VMware for example. (Sometimes you need to manually inform the guest OS.) Is there a safe way to do the inverse operation — reducing ...
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1answer
45 views

Unbalanced server memory configuration concern [closed]

A request for a server (HP DL 160 Gen9) with 2 processors came through with a weird RAM configuration request today. They requested 2 8GB DIMMs and 1 16GB DIMM. Are there any numbers out there which ...
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1answer
32 views

Does Hyper-V Replication support memory replication?

Does Hyper-V replication support the replication of memory, or is it just the deltas between disk writes? ie, in a fail over situation would a server with a memory fault have this same memory fault ...
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15 views

Limited memory and CPU in the apache virtualhost

How can I limit the memory and CPU of each virtualhost on a apache running on CentOS?
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18 views

Xorg in an embedded system--leaking memory?

I'm working on an embedded system that runs a custom Linux platform and it appears that the Xorg process is leaking memory. According to top, Xorg's virtual memory grows until the system crashes. ...
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36 views

AWS EC2 Instance with Windows 2008 R2 Datacenter Not Using All of Memory

I have an m1.large EC2 instance running with Amazon Web Services. The OS is Windows 2008 R2 Datacenter. It should have 7.5 GB of memory, and the desktop background indeed says: Total Memory : 7.5 ...
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Ubuntu 14.04 using 100% SWAP with more than 40GB free memory [migrated]

I'm a bit at a loss trying to figure out why this would be the case. Can anyone provide some helpful ideas on troubleshooting this? free -m total used free shared ...
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1answer
23 views

Server memory upgrade of IBM servers - can I use non IBM memory?

We just receive some old servers IBM servers (DDR2 and DDR3). We want to use them to upgrade our Test Area. I see that there are second hand memory with very good prices. Can we upgrade with other ECC ...
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1answer
43 views

Which RAM slots corresponds to CPU 1 on HP ProLiant BL460c G6

I have this server with 2 CPUs and 12 DIMMs. All slots are occupied. I need to change a faulty memory module. I know it's in the slot 3 (E) of the CPU 1. And here comes my question since I haven't ...
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1answer
54 views

Enable HugePages on Linux for multiple services/processes

On one of my Debian machines I'm running a service on a JVM and a MySQL instance. I have enable the HugePages following various online guides but I'm having a problem. Here is my configuration: ...
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39 views

make mysql to share all cpu

I am very new to linux server .I am using centos.Sometimes my cpu gets overloaded because of the process mysqld over 100% PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND ...
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39 views

How to decide on VPS good defaults for PHP and Wordpress when it comes to memory?

I have (only) 512MB to spare. The only thing running on my VPS is PHP/MySQL and on top of it Wordpress. No mail server or any other application, just Wordpress and LAMP stack. How to decide how much ...
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73 views

CentOS 99% memory usage

for the past week my CentOS VPS has had 99% memory usage. [root@server ~]# free -m total used free shared buffers cached Mem: 2048 2032 15 ...
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2answers
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How much memory does my SQL need?

I have a VM (SQL database server) that I think has more memory then it needs, however I'm not sure what I can reduce it to because I don't understand exactly what "In use", "Available", "Committed" ...
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157 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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26 views

Dell PowerEdge C1100 Memory Configuration

I have a Dell PowerEdge C1100 server with 48GB of DRAM (12x4GB modules, two modules per channel). Now I'd like to add some memory. I do not want to buy more 4GB modules, because it will give me a ...
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1answer
50 views

What is Slab, SReclaimable and SUnreclaim? What does Slab solve and how does it behave under load?

I have a server with 32 gigabytes of ram, with htop reporting 29 gigs used, with 4 gigs of swap in use as well. cat /proc/meminfo returns around 13 gigabytes of memory listed as SReclaiable. What ...
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2answers
71 views

xen vm memory missing

I have an Ubuntu server with 320GB of memory. I installed xen 4.4.1 on this machine, and run 2 Debian VMs. One with +-100GB of memory and one with +-200GB. Everything worked fine, until at one point, ...
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elasticsearch glibc memory corruption

My elastic search clusters keep crashing for no reason. All I can see in the logs is : INFO | jvm 4 | 2015/04/17 19:10:09 | *** glibc detected *** /usr/java/jre1.7.0_04/bin/java: malloc(): ...
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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 ...
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Systems freezes + Memory issues

I have a Hyper-V 2012 R2 server and increased its RAM to 32GB from 16GB. (for a small business). 1-2 months after the upgrade the system started to freeze seemingly randomly. Whether it was posting ...
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60 views

Possible reasons for extremely low RAM usage on a debian 7 VPS

After a fresh install of a debian VPS, my system shows very low memory being used. I am not sure if this is even a issue. But according to 'free -m' My system is using only 21MB of RAM ...
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1answer
53 views

How to dump process in Windows Server 2008

I want to dump memory of windows process using just command line and without 3rd party tools. Is that possible if we assume that all necessary privileges aquired. Maybe it is possible to do using ...
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30 views

Striped Ubuntu box - minimal memory usage

I am currently building applications with Go, and since I can deploy binaries, there is no need to install servers, databases and whatnot. My question is: How much can I squeeze Ubuntu so as to have ...
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210 views

LXC container shows host's full RAM amount and CPU count

I've been using LXC containers for a few years and have recently expanded the types of applications that run inside of container environments. I'm starting to limit resources at the container level ...
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27 views

Confirm a memory leak by tracing “free” and “cached” in top?

I'm trying to confirm that there is a memory leak on my Linux device while in idle state (there should be no continuous memory consumption). I'm not interested in identifying the process that is ...
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What could cause Ruby's free heap slots to rapidly increase?

I'm diagnosing why our Rails servers seem to leak memory. In looking at New Relic today, I noticed that "Free heap slots" of our Ruby VMs seems to jump from almost nothing up to the baseline level of ...
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203 views

MSSQL 2008 r2 Express: there is insufficient system memory in resource pool 'internal' to run this query

I'm experiencing this error during the lifecycle of my DotNetNuke Installation. I've change the hosting server and now I've got a Windows Server 2012 with IIS 8 an SQL server 2008 r2 Express running ...
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57 views

See ECC correction count

I'm curious as to whether or not there's some performance counter that will log the number of ECC corrections required, that could perhaps be tracked as an early indicator of memory failure. I imagine ...
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67 views

How measure memory without copy-on-write pages?

How can one measure total RSS memory occupied by a set of (forked) processes, without double-counting shared and copy-on-write pages?
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1answer
283 views

What is the Rowhammer DRAM bug and how should I treat it?

DRAM chips are very tightly packed. Research has shown that neighboring bits can be flipped at random. What is the probability of the bug triggering at random in a server-grade DRAM chip with ECC ...
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42 views

Anon value from pmap list too high. how to lower?

I do not understand why apache is using so much memory. I ran pmap and received the following: 912117: /usr/local/apache/bin/httpd -k graceful -DSSL Address Kbytes RSS Dirty ...
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1answer
92 views

Growing memory use

Let me start with picture: This is memory usage of our backup Tomcat server. It is just hanging there, processing simple healt check request every couple fo seonds and waiting for main server's ...
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2answers
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Is an ECC ram enabled GPU necessary for a server, or will a normal gpu work fine in a server?

Is it a requirement for a server to use ECC ram on a GPU while the normal CPU ram is ECC? Im thinking that instead of using a Quadro k6000 or AMD Firepro, we could use a GTX 980 or AMD r9 290...if ...
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906 views

System-wide JRE settings in deployment.properties file are ignored?

Basically I have the same problem as in this question. However the proposed solution doesn't work for me, not on a Win2003 server and not on a Win7 laptop used for testing. I have a Java SE 6 program ...
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49 views

Does swap on 32-bit OS with 4 GB make sense? [closed]

Does having swap space makes sense if I have a 32 bit OS (Linux) and 4 GB RAM already? As it would have to be addressable with a 32 bit address, which are already all "used up" by the RAM, would ...
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174 views

How can I find out what RAM is in my ProLiant DL380p?

I know what RAM is compatible with my server, but without taking the lid off I don't know what specific modules I've got. It took two seconds to find out from vSphere that I've got eight(8) 8GB DDR3 ...
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164 views

Linux memory usage higher than sum of processes

I'm trying to figure out what is eating my memory. I'm speculating that if it's not used by userspace processes then it may be from the kernel side. There is the output from some commands. I know ...