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

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dmidecode showing less Memory Capacity than Motherboard spec?

We got a supermicro server, http://www.supermicro.com/products/system/1u/5016/sys-5016i-ur.cfm, according spec, the server supports up to 32G memory when using ECC Register Memory. However, when I ...
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Linux Top shows 99% Memory in Use - Is it normal? [duplicate]

Possible Duplicate: Linux high memory usage (top total mismatch) High Memory Usage on Linux Server CentOS 5.7 dedicated server. No memory intensive processes running. 12GB RAM installed. ...
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3answers
230 views

Webserver - Memory-bound or CPU-bound? [duplicate]

Possible Duplicate: How do you do Load Testing and Capacity Planning for Web Sites I'm installing a social network using Zend Framework & MySql, with lots of plugins & queries. I ...
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118 views

xeon E5-2600 ram overclock

I got an application whose bottleneck is memory bandwidth. Did some bench with i7 3820. It's much faster with 2400MHz than 1600MHz RAM. Could Xeon E5-2670 handle faster ram than 1600MHz (non ECC) ?
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Non-ECC memory with ZFS: a stupid idea?

I have a new server and am planning to upgrade the paltry 2 GB of memory to the maximum of 16 GB. (Theoretically 8 GB is the limit, but empirically 16 GB has been shown to work.) Some guides advise ...
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2answers
2k views

how to drop_caches in OpenVZ centos6 container

I have tried sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' sudo echo 3 > /proc/sys/vm/drop_caches echo 3 > /proc/sys/vm/drop_caches echo 3 | sudo tee /proc/sys/vm/drop_caches and a ...
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1answer
95 views

How can I query or view the usage and ownerships of physical memory?

On Windows 7 and Windows 2008 SP2, how can I view who or what is using up my memory? In the task manager I can see the memory usage of user processes of me and other users, but there's always a gap ...
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7k views

Java “Could not reserve enough space for object heap” but lots of RAM free

I have a problem running Java applications on a server. root@dobby [/opt]# jdk1.7.0_09/jre/bin/java -version Error occurred during initialization of VM Could not reserve enough space for object heap ...
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76 views

Linux released memory

If My process allocates some big memory and then deallocates, would top or gnome-system-monitor show that my memory usage of that process decreased ? or kernel will still reserve that memory for that ...
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689 views

Monitoring usage resources per user in Linux

I want to get statistic hourly by used averages resources per user such as cpu and memory. How I can get it?
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873 views

Disadvantages of enabling 'Low Fragmentation Heap' LFH on Windows Server 2003? [closed]

I've been investigating an issue with a production Classic ASP website running on IIS6 which seems indicative of memory fragmentation. One of the suggestions of how to ameliorate this came from ...
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386 views

100GB Virtual Memory on 64GB server without swap [duplicate]

Possible Duplicate: Understanding virtual memory usage > swap + physical on Linux We have the following process: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND ...
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2answers
765 views

MySQL server stops randomly. Is it possible that system kills it during high loads or low available memory? [duplicate]

Possible Duplicate: How to diagnose causes of oom-killer killing processes I have an Ubuntu webserver (Apache + MySQL + PHP) on a very small machine on Amazon Web Services (EC2 micro ...
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0answers
219 views

Limiting memory usage and mimimizing swap thrashing on Unix / Linux

I have a few machines that I machine that I use for running large numbers of jobs where I try to limit the number of jobs so as not to exceed the available RAM of the machine. Occasionally I ...
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1answer
323 views

Android java build drained 8GB of memory [closed]

I build Android-4.0.4 for odroid-x on a lenovo x220 core i7 8GB of RAM running Linux Mint 12 (Ubuntu-11.10). I start 5 jobs to build, and after a while OOM triggers and kills dozen of processes until ...
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419 views

Why would snmp.exe utilize 1.2GB of memory?

We particularly don't use snmp for anything significant, at least not that I'm aware of. Is it normal for snmp.exe to consume 1.2GB after 285 hours of up time? Seems a bit excessive. Why would ...
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3k views

Balancing RAM when using multiple CPUs

We have HP DL360 G7 server with one cpu and 16G 12G ram. We plan to add another cpu. So, we need also ram for second cpu. Is there any negative performance impact if we add different size of ram to ...
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26 views

Getting RAM info from Performance Monitor [duplicate]

Possible Duplicate: Total RAM % from perfmon Windows Server 2008 R2 I'm trying to get the percent of memory used from PerfMon. Essentially, I want to see the number that's available from ...
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580 views

Commit charge peak higher than system limit

We are seeing some very strange behaviour on our servers and google didn't turn up anything usefull, so I'm tossing it out here. A standard server is configured with 4GB Ram, 2 4GB pagefiles and ...
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1answer
282 views

Will this mixed size RAM configuration work? Xeon 56xx ECC

This image show valid/invalid configurations according to IBM: Will this configuration pictured here work as well? This diagram is mine: Exact configuration: CPU 1: 3x 16GB 1600MHz Dual Rank CPU ...
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1answer
1k views

How much RAM do I need to run a forum using Nginx, Gunicorn, Django?

I started an ec2 instance (micro) to test the amount of memory I have available to run a website but I was expecting having a bit more. So my question would be: How much RAM do I need to run a site ...
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2answers
325 views

How can I find out the amount of memory COMMITED by a process on Linux?

To prevent the OOM killer running, I have set vm.overcommit_memory = 2 and vm.overcommit_ratio = 100 . I would like to know how much memory is committed by a given process, which is contributed to the ...
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252 views

nginx VPS on Dreamhost using a lot of memory for two small sites

I have a similar problem to that of the user who posted High memory usage of WordPress hosted on DreamHost VPS. The reason this is a 'problem' is because when it maxes out the memory quota I set for ...
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2answers
185 views

Different memory consumption with similar configurations

I have two different tomcat 7 instances on two different servers (oracle jdk7) with nearly equal hardware configuration (both > 24 GB RAM). Both tomcat servers have the same configuration and the same ...
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132 views

Will more memory help my CPU-peaking SQL Server 2008 R2

I'm supporting a system running against a SQL Server 2008 R2. The server is a single-CPU box with 8 GB of memory. As traffic has increased, the server has started saturating, peaking to 100% CPU ever ...
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150 views

On Unix/Linux OS machines are showing less memory [closed]

Why on Unix/Linux OS machines are showing less memory (RAM) than it is? Let say i have Ubuntu machine whose have 1024 MB ram, when i open "System Monitor" "Resources" tab it shows 1001.2 MB. How i can ...
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1answer
413 views

How do I use memtest86+'s “badram” output with GRUB2? [closed]

So after a while of things randomly crashing, I let memtest86+ run overnight, and it found errors. I enabled the "badram" error output, but every few seconds it shows me a differing selection of ...
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101 views

Is it sensible to use SLC swap as a RAM substitute on a VM host?

I have a few oldish servers running virtual machines but they are limited to 16GB RAM and that limits the number of VMs I can run and the options for RDS. I've added a RAID1 array of two Intel 311s: ...
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2answers
681 views

1GB cached memory - Do I need more RAM?

The server runs well but I wonder if I should get more RAM. I only have a few MB of "free" memory and 1.2GB of "cached" memory: free: total used free shared buffers ...
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3answers
725 views

failsafe RAM drive solution [closed]

I'm looking for a production solution to create a RAM drive that will be safely synchronized with HDD. I have a piece of custom software with heavy I/O load (this is some kind of proprietary ...
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1answer
2k views

How do you interpret `strace` on an apache process returning `restart_syscall`?

We restart an apache server every day because RAM usage reaches its limit. Though of value See this serverfault answer, I dont think lowering the MaxClients in the apache configuration is a solution ...
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280 views

How can I measure actual memory usage from my running processes? [duplicate]

Possible Duplicate: Meaning of the buffers/cache line in the output of free I have two servers, server1 and server2. Both of them are identical HP blades, running the exact same OS (RHEL ...
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1k views

Low-traffic WordPress website on Apache keeps crashing server [closed]

I have recently moved my low-moderate traffic (1000 UAUs, 5000 pageviews on a busy day) website from shared hosting to a Centos 6 64-bit VPS with Apache and cPanel running on 4 quad-core processor ...
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Very high Magento/Apache memory usage even without visitors (are we fooled by our hosting company?)

I am no server guy and we have issues with our speed so I come here asking for advise. We have a VPS with 2 cores and 2gb of RAM at a Magento specialized hosting company. Over the course of the last ...
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5answers
503 views

What should I do with all my free ram? [closed]

I have a weird kind of problem. I host a small webshop, it´s nothing big perhaps 20 visitors per day and a few orders per week. I will probably expand it a bit but I doubt it will grow very large. ...
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Non-ECC memory on Proliant DL385 g5

Is it possible to use non-ECC memory in the HP Proliant DL385 g5, the server is a test system so error checking is less important
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351 views

My VPS is Out of RAM how much to I need more? [closed]

I have VPS server with 1.25GB ram and 0.51GB cache trying to up an e-commerce website with 200k items, db now is about 2gb anything is now works terrible slow now because of lack memory mysql queries ...
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1answer
1k views

Apache httpd processes and PHP out of memory

I have a VPS running apache-php-mysql on centos and a single drupal website installed. The VPS has 256MB of RAM (could be the root cause of all my problems... maybe I just need more). Whenever I try ...
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76 views

Decreasing MySQL ram usage

MySQL is using 150MB of my RAM memory when it's doing nothing. I have a VPS with only 256 MB ram available, so what can I do to decrease its RAM usage?
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163 views

Swap space maxing out - JVM dying

I have a server running 3 WordPress instances, MySql, Apache and the play framework 2.0 on 64m initial & max heap. If I increase the max heap of the JVM that play is running in even by 16m I see ...
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2answers
16k views

is it possible to check how many DIMM slots are filled in a pc motherboard, remotely?

I am basically away from my office, but would like to check whether a pc (which has 4GB of RAM) has 4x 1GB DIMMs or 2x 2GB DIMMs. I am referring to a windows XP system. Is it possible to gather this ...
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2answers
1k views

Add entire 300 GB filesystem to Git Annex repository?

By default, I get an error that I have too many open files from the process. If I lift the limit manually, I get an error that I'm out of memory. For whatever reason, it seems that Git Annex in its ...
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632 views

How do you measure the memory footprint of a set of forked processes?

Say I've got a process using 200MB of memory, and it fork()s: python -c "import os; data='x'*200000000; os.fork(); raw_input()" Programs like 'top' will show each process using 200MB, with very ...
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1k views

dell poweredge r210 II mix memory

I have Dell PowerEdge R210 II server with 4Gb of memory installed. And I also have 8Gb memory module. I replaced 4Gb with 8Gb – server is working ok. But mixing memory in different ways got error ...
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718 views

APC setting - maximum apc.shm_size

Is there any limitation of the apc.shm_size? As i calculated im gonna need more or less 2 GB cache size, but if i set even 1 MB more then 1024MB, Apache wont start.
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554 views

High load average, low CPU and IO (Centos 5.7)

A Drupal 7 site with CiviCRM, after running smoothly for a year on a 1&1 VPS suddenly became unresponsive. Now pages eventually load, but can take more than a minute. Looking at resource use in ...
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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 ...
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309 views

is it fine to mix different sizes of memory devices on servers [closed]

I have Dell 00NH4P Server. dmidecode -t16 Error Correction Type: Multi-bit ECC Maximum Capacity: 288 GB Error Information Handle: Not Provided Number Of Devices: 18 and dmidecode -t17 | grep ...
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5answers
2k views

Which metric should I use to determine when a server is low on memory?

There are numerous (hundreds?) of different measures for memory usage on a Linux machine, but what is a good heuristic/metric to use to help determine if a server needs more memory? Some ideas: ...
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2k views

CentOS Out of memory kill. Apache is hogging something

I have a 1GB RAM Linode on a CentOS LAMP running Drupal Aegir with just 3 Open Atrium sites, and about 10-20 concurrent users. At random times, it pukes an Out of Memory kill. I can't figure out ...