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

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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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185 views

Why does Windows Server 2012 R2 Standard edition show only 20% of my available memory?

Fellow Techies-- I have a LENOVO x3650 X6/x64 based Windows server with 4 18 cores/36 logical processors-- with installed physical memory (ram) @1.5 TB, total virtual memory @1.5 TB. However, I am ...
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257 views

Node.js Server with PM2 Crashing with error ENOMEM - but no memory leak

I have an EC2 instance running a node.js server (Express based). After deploying in a new environment, my service had started crashing almost instantly with spawn ENOMEM Errors like this one: ...
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38 views

RHEL 6.7 cache causing out of memory errors

I have a (large) system that has cache behavior that I don't understand. It seems that the cache ran the system out of memory. How is this possible? Doesn't the kernel clean up the cache when ...
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53 views

After move SQL isn't releasing memory for queries

We recently made a move from one VM hosting environment to another. The machine we moved is a clone so all settings are identical pre- and post-move. However in our new environment our SQL server is ...
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122 views

Ubuntu Server 15.10, process not being allowed to use all physical memory, kswapd0 using 100% CPU

I have a 24-core server with 64G of DRAM, and it's running Ubuntu Server 15.10. I am getting some strange behavior with respect to swapping and physical memory use. I never had this trouble until I ...
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126 views

Limit amount of allocateable memory for process

I've got a windows service written in C#, that does some heavy work (irrelevant for the question) running on a remote machine (Windows Server 2008). Every now an then a client application contacts ...
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207 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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57 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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221 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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431 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 ...
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699 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 ...
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63 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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838 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 ...
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632 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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11 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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17 views

ps output is not correlated to free command?

I am getting sum of all reserved memory in KBs by using following command:- ps aux --sort -rss | awk '{sum +=$6} END {print sum}' OUTPUT: 14746220 i.e. 14.74GB However free -g returns 27GB as used. ...
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39 views

XEN VPS wrong memory?

I ordered a VPS on XEN platform with 1 GB of memory. CentOS 6.6 uname -a Linux vps 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux I checked the ...
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41 views

Physical memory runs out after sql changes

We have an 2008 r2 server working for 5 years, its physical memory was always around 70% but after our last site code and SQL stored procedures and functions updates it got to 94-96% and all the pages ...
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60 views

How to increase the amount of memory used for caching on 32 bit Linux?

I have a server with 64 GiB RAM running 32 bit Debian GNU/Linux v7.9: # uname -a Linux srv1 3.2.0-4-686-pae #1 SMP Debian 3.2.68-1+deb7u5 i686 GNU/Linux # free -m total used ...
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31 views

DIMM rank interleaving mechanism

I read this about rank interleaving: http://frankdenneman.nl/2015/02/20/memory-deep-dive/ Interleaving is continued from interleaving across the channels to interleaving across the ranks in a ...
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68 views

Xackup Backup Type for Xen Server 6.5

I'm running the Xackup trial and started backing up a few linux and windows VM's. I selected disk and memory state as the type of backup. Everything ran fine and backed up ok. When I went to edit ...
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55 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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63 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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277 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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271 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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192 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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275 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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68 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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How do I increase the curr_connections limit using memcache?

I am using a server with Centos 6.5 64 bits Kernel 2.6.32 and 64 GB RAM and 12 threads cores, and I cannot get increase the current connections used in memcache. This is my STATS output: # echo ...
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89 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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384 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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241 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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88 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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72 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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170 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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43 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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171 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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602 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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189 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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280 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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217 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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354 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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71 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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102 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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155 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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211 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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420 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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386 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 ...