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

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2
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3answers
43 views

java program out of memory before reaching xmx

On a Redhat CentOS 6.4 are only a few process running, using about 3GB RAM (System has 12GB available). One of the processes is a WSO2ESB Server (java), we start it with those parameters: -Xms2048m ...
0
votes
0answers
6 views

Motherboard issue? [migrated]

I have a system that will partially start. It gets up to about 1GB of memory, then completely freezes. It detects all the memory I put in, whether it is 8 or 16GB. I have used completely different ...
-1
votes
0answers
9 views

Tyan i5400PL (S5393) issues [migrated]

I purchased the Tyan S5393 i5400PL a couple of months ago, for a video editing and rendering workstation project. I had all of the other parts needed for it: 2 Intel Xeon x5450 750W PSU 2GB ...
0
votes
1answer
26 views

when is the jvm heap allocated by the OS

One of our sap systems(PI ABAP+JAVA stack) was giving performance issue. The entire 64GB configured for the machine gets hogged up(and the 8 cores as well). Every one is suspecting the java part,but i ...
-1
votes
1answer
30 views

How to release the physical and virtual memory used from the mysql server? [on hold]

Several php scripts are executed from cron on my CentOS 6.5, every php script contain database requests. Depending on the php object size and type the database requests can allocate too much memory. ...
0
votes
0answers
3 views

DG31PR intel board with 1GB RAM, can I add 2GB RAM with existing 1 GB? [migrated]

I have a PC with below mentioned configuration DG31PR intel board Core 2 Duo Processor Transend DD2 667 1 GB JetRam , JM667QLJ-1G, 240P DDR2 DIMM (128M*64) (64Mx8 DDR2 667 5-5-5) [LM] I am ...
5
votes
7answers
800 views

Bad byte in one RAM module / Block area of RAM from being used

I have four 512 MB RAM modules in one server. The fourth RAM is showing error for only one bit when I use memtest86+ to test the RAMs. Even when I swap the RAM in fourth slot with some other RAM I ...
-3
votes
0answers
58 views

Linux can't detect all memory [on hold]

I have a server with four nodes.The total memory size is 512G. After installing CentOS 6.5,I found the total memory is only 260G. And here is the information in /proc/buddyinfo : Node 0, zone ...
2
votes
2answers
540 views

HP Proliant DL360 G7 All DIMM indicator lights amber

I am currently doing a RAM upgrade on an HP proliant DL360 G7 server. After installing the new RAM (18x 8GB KTH-PL316E/8G) the LED indicator lights for every single DIMM turned amber and the health ...
4
votes
0answers
34 views

Slab usage extremely high?

On a Centos 7 server with 32GB RAM memory I am running a few programs namely MySQL, Apache2, PHP. Recently I wanted to verify the amount of ram left as I was planning on installing a few more ...
0
votes
1answer
38 views

How to handle Docker memory management?

Update: Rather than spinning up my resque worker through the docker command (to test), I instead killed all my containers with fig kill, added it to the fig configuration, and ran fig up. This worked ...
3
votes
3answers
136 views

server's memory taken up almost to 8GB

Lately, our server face problem with the memory. Started from few weeks ago, our server was loading very slow. Accessing emails and websites were really take too long. Then we asked the server ...
4
votes
1answer
399 views

Growing OS cache in RAM causing high system CPU usage

Long question, so please bare with me: I'm having a weird issue with a server that I've never seen before. On a machine with ~30G of RAM with an application that takes ~10G (spread across hundreds of ...
-4
votes
0answers
22 views

Google compute change machine type [closed]

We wanted to increase ram of instance as per many blog we have deleted the instance without disk and then create a fresh instance with previous disk and ipaddress. But after creation of new instance ...
0
votes
1answer
27 views

New Relic memory reporting

We're using New Relic to monitor a server and a PHP application. New Relic is reporting memory usage of 90%+, which aligns with top. However, the sum of memory used by the processes in New Relic ...
0
votes
1answer
58 views

Run app only in swap [closed]

I've a very low priority level program who consume large of memory. I need to free RAM for other programs. My objective is to kill -STOP <pid> this process and ```kill -CONT when i need it. But ...
1
vote
2answers
843 views

How to detect NX/XD bit under Windows

I'm trying to find a way to detect (using software) if the system I'm on has 'No eXecute' bit capability. Under Linux I would simply list the CPU features using /proc/cpuinfo but I found nothing in ...
0
votes
0answers
20 views

Memory usage of Postgresql and play framework

I am running a play framework application and a Postgresql server on a VPS which has 2vCores and 2GB of RAM and I'm having memory issues. I limited my play application to 1024MB with the parameter : ...
1
vote
1answer
859 views

Maximum amount of memory per session with IIS/.NET

I'm troubleshooting some memory issues we're running into with a heavily used ASP.NET site hosted on IIS6. Intermittently we have to manually recycle our application pool (process) to resolve issues ...
0
votes
0answers
41 views

Increased CPU usage and server response time

Over the past 10 days, I'm suddenly experiencing increased CPU usage on my website with CPU usage reaching 100% three times. During that time I'm unable to SSH to my website so I haven't been able to ...
3
votes
1answer
708 views

Linux Huge Pages Usage Accounting

I have configured Huge Pages for use with Java and it appears to be working well although I have a question about the accounting in /proc/meminfo. To illustrate # grep HugePages /proc/meminfo ...
1
vote
1answer
49 views

Redis eats up more and more memory

I am running Redis 2.8.17 on Ubuntu 14.04 and yesterday Redis started eating up all the memory until it was killed by OOM. I restarted it multiple times, restarted the server, flushed all the data, ...
0
votes
0answers
888 views

MySQL (MariaDB) crashes frequently

I recently migrated an old server running MySQL to a new VPS running MariaDB 5.5. I don't have too much running on the server (just a few PHP sites) and free memory seems to be OK, but the DB keeps ...
0
votes
1answer
2k views

How much memory can I safely assign to memcached?

I'm looking into using memcached on our server. We've just upgraded and now have a fairly powerful box: DELL PowerEdge R710 Linux RHEL 5 - 64bit 12GB RAM (We used to be on a 32bit 4GB box). The ...
0
votes
1answer
28 views

Is it possible to force a specific program to use virtual memory?

Let say I have 1GB RAM Ubuntu, I need to run both memcached and redis on the same machine The usage of memcached is quite heavy (e.g. 1K read per second) and redis is less heavy (but still 10 read ...
1
vote
1answer
20 views

Can I safely mix RAM (ECC) sizes in a server board?

I have a server (actually used as workstation) with a Supermicro X8DA6 motherboard, with 2 installed Intel X5650 processors. It uses ECC RAM. It currently has 6 Kingston KVR1333D3D8R9S/4GHB dimms ...
3
votes
1answer
256 views

Where did my memory go on linux (no cache/slab/shm/ipcs)

This is a headless server with 8GB RAM (kernel 3.12)... even after only a few days, i get low on memory. in fact, this server has OOMed a few days ago... something is losing memory, but i don't know ...
1
vote
1answer
43 views

HP proliant DL320 g5p Ram

I have 2 HP Poliant DL320 G5p servers that I am trying to do a ram upgrade on. They currently have 5 GB of DDR2-PC2 6400 non-registered, unbuffered and ECC. I am trying to install 8GB (4x2GB) and the ...
175
votes
13answers
65k views

Any benefit or detriment from removing a pagefile on an 8GB RAM machine?

I'm running Windows 7 on a dual core, x64 AMD with 8GB RAM. Do I even need a pagefile? Will removing it help or hurt performance? Would it make a difference if this is a server or a desktop? Does ...
0
votes
1answer
39 views

OpenVZ: shmpages keep increasing

I have an OpenVZ VPS. However the shmpages always increases to the limit in one or two days. My RAM usage is low (233M without cache). I only run nginx, php-fpm, and mariadb on the VPS. I've asked my ...
0
votes
2answers
3k views

Multibit error encountered on Dell Server Memory

Dell OpenManage reported the following: Memory device status is critical Memory device location: DIMM_B2 Possible memory module event cause:Multi bit error encountered What does this mean? How bad ...
1
vote
1answer
871 views

What does `numactl --localalloc` do?

What does numactl --localalloc do? Does it bind program allocation to only the single node that numactl --localalloc was run on? Or does it ensure that whenever the program allocates it's given memory ...
7
votes
3answers
722 views

Why does the “free” command and “dmidecode” show different values for RAM?

I've got a CentOS 5.10 (32-bit) server running on VMWare. It's allocated 4 GB of RAM. If I run dmidecode -t 17 | grep Size | grep MB I see: Size: 4096 MB Yet when I run free, I see: ...
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votes
2answers
623 views

Get full physical Ram memory with bash

I know some of you might find my question stupid but i need to know how much ram is installed on a centos box Yes i know it can easily be done by using the command awk '/MemTotal/{print $2}' ...
0
votes
0answers
24 views

Linux wont release memory after exec, system, passthru command from php (Imagemagick commad)

I´ve a problem with a process on my linux server: I´ve a Linux Server with Cent OS 6 and Imagemagick. When i´m running a php script with a loop of imagemagick commands... (convert, composite...) with ...
0
votes
1answer
48 views

RApache memory usage

I have a server with ubuntu 12.04 and it is installed Apache, PHP5, MySQL, and Apache module called RApache. I am working with grid data is processed dynamically. Each time the user makes a request ...
0
votes
1answer
36 views

How to know the real amount of RAM in a VPS

I've been told that a VPS's RAM can be manipulated (oversold) by VPS providers. I know I can always buy a VPS from a reputable company, but, really, how can one make sure the allocated memory is the ...
8
votes
5answers
13k views

How to have linux top command show memory summary in megabytes not kilobytes

Redhat EL5 I had my top configured the just the way I like showing the memory summary and swap summary in MB. I had to close my shell and then when I re-opened it, it is back showing in (default ?) ...
-1
votes
1answer
37 views

Memory on dedicated server is filled out [duplicate]

We are managing a dedicated server (WHM/cPanel) with 4-5(Magento & Woocommerce mostly) accounts in it, along with custom code that will connect those platforms with ERPs. This custom code works a ...
0
votes
2answers
70 views

Why does downloading a large file with wget seem to consume nearly all available RAM? [closed]

I am trying to download a file of 580MB with the following simple wget command: wget http://example.com/file.ext The server has 16 GB installed RAM of and during the entire download the memory ...
37
votes
3answers
21k views

In Linux, what is the difference between “buffers” and “cache” reported by the free command?

This is an old question that I've seen from time to time. My understanding of it is rather limited (having read about the differences a long time ago, but the factoid(s) involved never really stuck). ...
0
votes
0answers
19 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
1
vote
0answers
21 views

Mysql with low memory on development environment

How to set mysql to run on very low memory? (preferably under 100MB and max 250MB) Currently it's running for about 400mb. I can't turn off the innodb because production using innodb. Is there any ...
3
votes
2answers
705 views

Is there a way to tell the runtime of a RAM module?

I'm planning on buying used RAM which was supposedly only used for a very short time. However, I'm afraid the seller might underestimate. Is there any way I can confirm the time for which the RAM ...
0
votes
1answer
48 views

Memory cache is full not sure what is using it and if it is normal [duplicate]

The situation is that amazon bots are download ~600k images off my server. My web app deployed on apache server is extremely slow probably because ram usage is 100% some statistics: ...
1
vote
1answer
32 views

Azure Memory Allocation (Windows VM) for Python?

I'm running a pretty intensive python script on a large Azure Windows VM. I'm using Enthought Canopy for my python environment. The VM has 56gb of ram available... however in the task manager python ...
1
vote
2answers
111 views

Dell R710 RAM Upgrade - Making sure I get this right

I have a Dell R710 that's refurbished (so no warranty or support by Dell) and currently has 48 GB of RAM in it (12x4GB). According to the smbiosDump in ESXi, it looks like this: # smbiosDump | egrep ...
0
votes
1answer
1k views

How to free the (unused) memory?

Being a newbie in working with amazon ec2, I am trying to make my application work. I've connecting a few times by ssh, I've been running and stopping the server, sometimes the connection was lost, ...
1
vote
0answers
46 views

Why is my server using swap even though there is lots of RAM available? [duplicate]

My server has 24 cores, 16 GB RAM, and 8 SSDs on raid 0 (I think). I've noticed it is now using a low of swap space, even though there is plenty of RAM available. load average: 2.70, 2.54, 2.50 Mem: ...
2
votes
1answer
70 views

Set default numa policy to “interleave” system wide

I know it is possible to set the numa mode to "interleave" (see NB below) for a specific process using numactrl --interleave, but I'd like to know if it is possible to make this the system wide ...