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

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34 views

KVM host won't use memory for caching

I have a KVM host (Linux 3.14.32) running 8 virtual machines. They are overprovisioned (memory allocated for them is greater than available physical memory on the host). However they consume only ...
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1k views

Process Managment memory-leak in Windows Server x64?

After clean install and boot of OS Windows x64 I launched cmd.exe (any other exe) and closed it. Then I launch rammap.exe (http://technet.microsoft.com/en-us/sysinternals/ff700229.aspx). On the 2nd ...
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32 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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133 views

BUG message on xenserver 6.5 - bad memory?

Several times a day I receive the following error in /var/log/messages. The server hangs and requires a reboot to respond again: Feb 1 13:44:54 xenserver-abfuqvrs kernel: [35023.166776] BUG: unable ...
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316 views

Why can't I malloc as much memory as `free` reports as being free?

The following C program allocates slices of 10MB of memory until it is killed by the Out of Memory killer. #include <stdio.h> #include <stdlib.h> #include <string.h> #include ...
2
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562 views

How can I use huge pages and libhugetlbfs on a Debian EC2 PVM instance?

On my local machine (i7 9200) running Debian Wheezy amd64 I can get some significant speedups on some "big data"/HPC type stuff by: Following the instructions here to reserve some RAM for huge pages ...
2
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59 views

Sun Fire V40z, big gap between memory reported by dmidecode and what the Linux kernel sees

I'm looking after a V40z (a loaner), running RHEL 4.8 (no, I can't update it, it's a loaner) that according to dmidecode has 8 DIMMs of 2048M each, which makes for 16GB RAM as far as I'm concerned. ...
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684 views

udisks-daemon eating up all my memory

I'm operating a little storage server on debian, over the past months I've noticed the process udisks-daemon eating up almost all available memory. Is this just really aggressive caching or a memory ...
2
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581 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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23 views

Windows equivalent of Linux vmstat pswpin and pgfault?

Is there a way to query Windows for the total number of pages swaped in / out and total amount of page faults? (values found in /proc/vmstat on Linux) I could only find ...
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21 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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36 views

Are 2Rx4 DDR2 ECC memories compatible with Intel Xeon on socket LGA771?

For my Intel Xeon L5420 (LGA771) I bought 24GB of DDR2 ECC Reg, 2Rx8, knowing that 2Rx4 are specific to AMD chipsets or, at least, the non-ECC ones are. However, this slick seller instead sent me ...
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107 views

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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178 views

Max memory for HHVM instance on vServer

Im tried hhvm on my vServer and have problems with the memory used. The performance is great, but the used memory consumption is horrible. I have a vServer with min 4GB and max 8GB memory and hhvm ...
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98 views

MongoDB mongos memory usage

Planning how to deploy a shard-ready cluster (Single shard at the moment, with all config servers and mongos processes), I've read the MongoDB operations best practices. I have doubts about the memory ...
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231 views

PCIe card memory regions ignored on linux kernel 3.13

On my system, with kernel 3.13.0-32-generic (Ubuntu Server 14.04.1 LTS) installed, one of the PCIe boards in the system (06:00.0) is having it's memory regions ignored: Interrupt: pin A routed to IRQ ...
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55 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 ...
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70 views

Rail's FileStore with Linux Disk Caching or RAMdisk?

I have a Ruby on Rails application that stores it's catched files on the filesystem (Rails file-system cache). I was thinking about changing to memcached Store, but a short test shows it isn't a big ...
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303 views

Amazon ec2 - Error occurred during initialization of VM Could not reserve enough space for object heap

I don't have any experience of working with servers, so please explain your answer in detail or provide a link to support your answer. I want to restart server and executing command for that gives ...
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180 views

Monitoring and reporting on page faults to determine memory issues

I'm in the process of configuring a performance monitor(s) against all servers in my domain. I'm using WhatsUp Gold 16.2 to send an alert when we reach certain thresholds. I recently read an article ...
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72 views

Hardware configuration for head nodes (HDDs, memory, processor, redundancy)

I'm designing a head node whose primary function is to submit jobs to the Torque/Maui scheduler and secondary function is to run test jobs. Unfortunately, most hardware selection guides for clusters ...
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70 views

How to use kexec to do a live upgrade of hotswap ram on a CentOS vm image?

Just as the question states, is there a way and what's the best method todo a live ram upgrade with kexec?
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149 views

Red Hat Enterprise Linux 4 - free -m shows high memory used in second line but no process actually uses memory

I have a Red Hat Enterprise Linux. I understand that top can show high memory usage, which is fine. free -m shows below output: $ free -m total used free shared ...
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36 views

Windows app not allowing debugging

I'll start by saying, I am not sure if this should go in StackOverflow or ServerFault. I posted it in StackOverflow earlier, but its been getting votes to close the question, so I assume it should be ...
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133 views

High CPU load by system during slow memory allocation to a process

I encounter an issue on one of my server (centOS 6.4 with kernel 2.6.32-220.7.1.el6.x86_64). Let me explain it : when I run 4 processes (let's call them p4), I saw that memory allocated to them ...
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375 views

How to read the address of the XSDT table, as provided by `acpidump`?

I want to access Physical memory in BSD. acpidump -t XSDT > xsdt_dump.asl it is giving: /* RSD PTR: OEM=ALASKA, ACPI_Rev=2.0x (2) XSDT=0x9aae8070, length=36, cksum=164 */ /* XSDT: ...
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2k views

Apache httpd process using too much memory

I am running a dedicated apache web server on CentOS6 it has: 12GB memory 4 cpus My httpd config is as follows, from /etc/httpd/conf/httpd.conf Timeout 60 KeepAlive Off MaxKeepAliveRequests 100 ...
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241 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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183 views

Should I consolidate multiple identical VMs into BSD jails?

We run a number of Openfire XMPP/Jabber servers. Due to the way Openfire works, we cannot easily run multiple Openfire instances on one server, so I have 5 identical VMware ESXi VMs, each with CentOS, ...
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243 views

what is the default size of jvm heap when using maven to create jvm?

I am using the server started by the following command. mvn jetty:run i want to stop the server, but i failed to run mvn jetty:stop, even faild to run java -version, why? [mirror@home wpse]$ mvn ...
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198 views

Mounting shared memory in XCP/ XEN Server,for storing VM

Requirement vm with 2HDD each 1gb OS will be installed on hdd 1 and required data on HDD 2 I want all my VM running on Xen Cloud Platform XCP 1.1 to use /dev/shm of host machine for HDD1. Is ...
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282 views

Set total memory limit with Torque

I run a moderately sized cluster and I am having a queue problem. For example I have a node with 128GB of memory and a program that I set the amount of memory per core. So for example if I set memory ...
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63 views

Acceptable memory limits on a VOIP, MySQL and HTTP server

I'm currently running a Mandriva(Linux) server with fairly low memory (1GB). At the moment the specs are looking like this(it currently is used for VoIP(sip), MySQL and HTTP): freememory total ...
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42 views

Are memory and thread managers on Windows Server 2008 R2 and Windows 7 Home/Prof/Ultimate same?

I was asking one question on DBA site, and I got a reply, that implies, that Windows Server 2008 R2 and Windows 7 Home/Prof/Ultimate have different memory and thread managers. Is this correct?
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147 views

Linux FOG Server Memory

I'm a computer tech at my high school, and our technologically-superior head just got fired. He just set up a Linux FOG server before he left, and we have to re-image all the computers in the school ...
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207 views

Tracking huge buffer usage under Linux

I'v a Linux server running under Debian Lenny with 4Go of RAM. It doesn't run a large number of stuffs: Postfix/spamassassin (daemon mode) Bind9 KVM (one guest - 1Go of RAM for it) Every day at ...
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412 views

strange memory usage pattern on windows server 2008 on login through remote desktop

I'm running Windows Server 2008 Datacenter Service Pack 2 on a VM Ware instance with 10Gb ram allocated. I'm not running IIS or SQL Server. Under 'normal' conditions, the machine uses ~5.5Gb of ...
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383 views

sql server using all the memory on the box and throwing timeouts on pedestrian queries

I have max memory set. But at least 1 time a day the Sql Server hits over 95% of the ram in the box, and page faults for more. In the meantime the website is throwing very obscure timeouts on simple ...
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12 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 ...
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0answers
28 views

RamMap shows millions of processes that Task manager doesn't

I have a server 2008 box with 32GB RAM on and i have been investigating why it runs out of memory every 150 ish days. Task manager shows that we are running at 99% memory usage but all the processes ...
0
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0answers
39 views

Strange memory usage behavior in JBoss machine with Linux

I´m having a strange memory trouble with a Linux box with two JBoss instances and one Tomcat instance. All was working fine until last 20/jul. After that, the memory available (total used - buffers - ...
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19 views

Can't change memory_limit on PHP 5.5.9 on Ubuntu 14.04

I'm running PHP on Nginx using fpm. The reported memory_limit is 128M and i cannot change it for the life of me. PHPInfo: Server API: FPM/FastCGI Config file: /etc/php5/fpm/php.ini Memory ...
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12 views

How to monitor MongoDB cursors

I have a MongoDB cluster with 1 PRIMARY and 2 SECONDARY servers. In the last couple of days the number of open cursors has risen from 10-20 a sec to more than 2K and keep rising. I'm getting a lot of ...
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25 views

What does it mean when memtester reports errors only in the arithmetic tests?

I know I have memory errors on this server so I took it offline (it doesn't have ECC RAM unfortunately ...). I also don't have physical access so I'm using the inferior memtester (versus something ...
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37 views

OOM Killer not triggering?

I'm working in an environment which has just been upgraded to Amazon Linux 2015.03 from Debian 6, quite a big jump. On the new platform a server instance has locked up a few times due to running out ...
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31 views

vSphere | VMs are balooning and swapping | sched.mem.max paratmetar does not exist

I have two VMs in ESXi5.5 environment that are swapping memory. After a long research I found out the below two articles where it is explained that one must compare the values of memsize and ...
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40 views

Java out of memory exception when running as a non root user

I'm attempting to run apache kafka on a small basically stock digital ocean server running centos 6.6. I'm not positive if this issue is kafka specific or not. When I run kafka as the root user ...
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41 views

High memory usage on server after upgrading from MySQL to MariaDB

I recently upgraded from MySQL 5.5 to MariaDB 10.0. After upgrading, rebuilding Apache & PHP, I noticed that memory usage went up by around 200+ MB. I have a VPS of 2 GB available. Before the ...
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41 views

mysql swap file crash on freebsd

I have a low memory VPS that mysql and the swap file crash out every morning at exactly 0300. There are no cronjobs on the system that have been configured. The server is a basic LAMP development ...
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6 views

Should I keep memory dedicated for HDFS and Spark on cluster nodes?

I'm wondering if there is a real benefit for splitting my memory in two for the datanode/workers. Datanodes and OS needs memory to perform their business. I suppose there could be loss of performance ...