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

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1GB VPS - Apache Worker MPM - FCGID - Max concurrent connections - RAM CAP

I have spent a week or two researching and setting up my server to run Apache with the Worker MPM and FCID. I am trying to optimize it to allow for the most concurrent connections possible. It has ...
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130 views

How does recent VMware ESXi (>= 5.1) use unallocated memory?

When an ESXi host is not under memory pressure (ie, running VMs are consuming less memory than physically available) how is "free" memory managed? Does it have some sort of block cache for block ...
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306 views

How to map a folder to memory?

Is there a way to map a particular folder to memory? Say I have C:\somePath and I want that folder to be in memory at all times and maybe changes are dumped to HDD asynchronously without my notice. So ...
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603 views

Why am I missing 4GB of RAM on Windows Server 2008 R2 64bit?

I noticed today that a server was very low on memory. It physically has 8GB installed and runs Windows 2008 R2 Standard 64bit. It also hosts 2 virtual machines using HyperV. Server is Dell ...
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31 views

What is System Code Total Bytes

I am trying to use perfmon, and according to MSDN, the "System Code Total Bytes" counter ... Shows the size, in bytes, of pageable operating system code currently in virtual memory. It is a ...
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153 views

Linux buffer memory always stays at zero

One of my hosted server is a Xen guest running Debian and linux kernel 2.6.32 then 2.6.38. It has been running fine for quite some time (more than a year) but I recently noticed something weird. For ...
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380 views

Apache is not using SWAP and it's reporting page allocation failure

Check the logs: httpd: page allocation failure. order:4, mode:0xd0 Call Trace: [<ffffffff8000f696>] __alloc_pages+0x2ef/0x308 [<ffffffff80017a40>] cache_grow+0x139/0x3c7 ...
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62 views

Load balanced asp.net websites and required memory usage

Each of my servers has 8Gb RAM and the memory usage hovers around 7Gb. I have a load balancer available to me but at the moment I'm worried that putting my sites through it will cause the platform to ...
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311 views

Can I monitor a service's memory/cpu usage on OpenSolaris?

What would be the best way to monitor a service's memory/load on the OpenSolaris platform so that one can send alerts and automate service management (restarts, etc) based on "rules"? On the linux ...
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30 views

Tracking memory problems

I'm experiencing some trouble with my Windows Server 2008. We're using it for hosting a bunch (~50) of Web GIS applications on IIS. This setup usually works very well, but when certain applications ...
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81 views

Mysql running out of memory

I am having a lot of trouble with mysql eating too much ram on a small machine and am looking for some help in figuring out why it is eating so much. I have a small virtual machine with 256MB of RAM ...
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562 views

Why does my SQL Server use AWE memory? and why is this not visible in RAMMap?

We have a Windows Server 2008 R2 (64-bit) 8GB server where, according to Sysinternals RAMMap, 2GB of memory is allocated using AWE. As far as I understood, this means that these pages stay in ...
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65 views

Classic ASP apps on IIS shuts down when memory usage goes over 90%

I've got an issue where all classic ASP apps on IIS shut down, when the crowded server exceeds 90% memory usage. This is because ASP apps cannot create new sessions any longer. The ASP.NET apps are ...
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268 views

Mysql crashing due to InnoDB not able to allocate memory

MySQL crashes every now and then due to, I believe, a large request hitting it above the innodb-buffer-pool-size set in my.cnf (currently at 210M), which I needed to set for mysql to start in the ...
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500 views

Avoiding memory full -> swap full -> crash

I'm experiencing an issue when sometimes the memory gets 100% full, and the swap file also, and the server becomes non-responsive and has to be restarted (causing also problems in database). This is ...
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144 views

How to change memory for DomU runtime

I have a xen server with xen-4.1.3, linux-image-3.2.0-3-amd64, debian squeeze and 16Gb of RAM. The domain-0 has 1Gb of ram, the rest of memory belongs to the hypervisor. I want to start a guest domain ...
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168 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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465 views

What does monit consider to be memory usage?

Once can have monit monitor memory usage… check system foo if memory usage > 95% then alert Does it use free RAM, or free -/+ buffers/cache? (or something else?) # free -m total ...
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698 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 ...
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131 views

Tune IIS 6 for high-cpu, high-RAM server

Are there any suggested tuning options for a web server running on a multi-core (16) server with 16GB RAM? It is an old DB server that was transitioned to a load balanced web server farm however with ...
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527 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 ...
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507 views

OpenVZ Swap space?

From what I understand with OpenVZ you just increase privvmpages and vmguarpages for the swap memory, and even though the guest shows it as RAM the host will swap it were possible. Am I right here or ...
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295 views

What kernel structure represents memory for tmpfs and cached/buffer reported by free/top/vmstat?

OK so here is a follow on question to link. When I create a tmpfs filesystem on t and allocate say 100MB of space, why can't I see it in slabtop or /proc/slabinfo. I thought maybe it was because it ...
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388 views

Which requests cause a w3wp process to grow considerably?

On a production environment, how can one discover which Asp.Net http requests, whether aspx or asmx or custom, are causing the most memory pressure within a w3wp.exe process? I don't mean memory leaks ...
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33 views

how to set up shared memory and make it available?

I try to setup shared memory for Sybase ASE 12.5 on CentOS. My server has 17G memory, I want to make 14G (=17-1-2)available for sybase. (1G for os, 2G for ramdisk 14 = 17-1-2). here is the info: ...
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88 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, ...
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26 views

Debian 6 - Linux 2.6.32-5-amd64 - Samba server with 32GB swap - how should i reuse it?

today i have the mission to tuning a Debian samba file server, previously i never ever touched it. RAM = 16GB SWAP = 32GB first of i ran a parted -l and a free -h and i saw one 3TB hdd: /dev/sda ...
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10 views

Where can one find good documentation describing memory-rank “sparing”?

Where can I find good documentation describing memory-rank "sparing" (for computer-hardware memory-protection configurations)? I'm seeking to clarify what benefits it provides and how it's typically ...
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74 views

Transfer used ram to swap and free more physical ram

I have a vps with 256m physical ram and 512m swap space, I am trying to use a software that need more than 256m and less than 512m ram, so it uses swap. The problem is at some moment of the ...
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84 views

Postgres using only 500 MB of RAM of the available 4 GB

We recently moved to running postgres server on it's own VM and tracked the memory usage of the VM. Here is what I found: That the postgres is only using 500 MB of the available memory on the VM. ...
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72 views

Solaris memory allocation

I have solaris system that installed 12 GB RAM. All running process consume about %65 memory. I start to application that tshark (wireshark command line alternative). Tshark complete parse a ...
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160 views

X7DWN+ 14GB Memory Fitted - 10GB Detected by BIOS

We have a Supermicro X7DWN+ motherboard with two Xeon L5420 CPU's installed. There is a total of 14GB memory installed, however the BIOS is only seeing 10GB. The memory has been tested in another ...
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110 views

Run a secondary PostgreSQL server in memory?

Our development server currently has a file-based PostgreSQL server installed and running perfectly. However, we're trying to speed up our Rspec/Autotest runs and I was thinking that running a ...
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131 views

How to speed up SQL Sever - More RAM didn't work

We have a server with 48 GB RAM on it. We're running some pretty heavy processes on SQL Server 2008 64 bit, but it tops out at 3 GB and won't use any more. It only uses about 15% of the CPU. The ...
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191 views

Unique index failed?

Recently, we've been having some kind of memory leak in SQL Server. We do have a .NET assembly running to audit our tables, but this has ran for a few years without problems, so I doubt it's the ...
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118 views

Unbelievable issue : a single apache process takes 4 GB of memory

That's an unbelievable issue but we have single apache process that takes 4 GB of memory ! And it doesn't happens always with the same URLs, it's unpredictable and we don't understand why it is ...
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125 views

Max memory including burst

I have CentOS 5.8 32bit with 1GB of guaranteed memory. With Burst memory I'm on 2GB. I'm thinking of upgrading my guaranteed RAM to 2GB making my Burst 4GB. I know a 32 bit system can't (normally) ...
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254 views

Apache2 and mysql-server consume maximum physical memory

i am using ubuntu 12.04LTS on my linode vps include core2 cpu, 2gb RAM. I am doing a lot of research on optimizing memory for mysql and apache process -> optimize apache memory use, there i am using ...
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104 views

Memory Usage - In Use vs Working

Is there a way to find out what objects are in memory (or what processes are holding on to it). I have a server, where the "In Use" memory (in Resource Monitor) is showing 7GB, but the Memory ...
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220 views

ubuntu dmidecode is not functioning properly

dmidecode is giving irrelevant and conflicted results. it shows that i have two slots while the correct is 8 (the board is Tyan S5350.) uname -a Linux synd01 3.0.0-16-server #29-Ubuntu SMP Tue Feb ...
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739 views

lamp centos 5.8 suddenly out of memory

This system is running Centos 5.8 final using 2.6.18-308.4.1.el5 as a virtual machine on VMware ESXi 5. Standard LAMP install, running three instances of Wordpress. Server has been running for a ...
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84 views

High memory even tho no traffic

I have 2 webservers running Apache 2.x on CentOS 5.x. One of them was started like 16 hours ago and has lots of free RAM (about 28GB out of 34GB). My second server however, is running for a few ...
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158 views

Disk or CPU/RAM failure ? I can't figure it out

i'm having big trouble accessing my production servers (runnung xen); i recently bought brand new Western Digital (WD5000AAKX 500Gb) drives to replace the old drives; re-installed the system as it ...
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80 views

ColdFusion JVM: strange memory behaviour

Since last month, we got a problem on our company's server (Win2008ServerStd + IIS7 + CF enterprise 9.0.1 (hotfix2)). I used jConsole to monitor the Coldfusion JVM (1.6.0_24) activity and here's what ...
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169 views

php5.cgi running wild

I'm running a pretty standard CMS site on a VPS with almost 500MB of RAM. I've been consistently pushing the memory limits of the server, and I can't imagine how with a standard site (it's not doing ...
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296 views

Apache CentOS taking up too much (cache?) memory

The server has physical memory of 4gb. We have a desktop CentOS (5.) running a VM (virtualbox) as the server. The VM is allowed 1.8gb memory (as per VirtualBox recommendation). My problem is that ...
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189 views

Will a set of 2x Kingston KTH-XW667LP/8G work in my IBM x3650?

I'd like to upgrade my system IBM x3650-7979 with 16GB or RAM, by installing two sets of Kingston KTH-XW667LP/8G RAM DIMMs. The Kingstons are ECC and fully-buffered, but what about Ranks? CAS latency ...
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125 views

Guidance on a 1U server build - rdimm in a udimm system?

I am about to pull the trigger on this system. It comes with 8GB of RAM. I would like more, preferably something along the lines of 24-32GB of RAM. I've been unable to find any UDIMM in a 2x8GB ...
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2k views

How to test RAM from Windows 2003 without planning an outage?

Is there a way to test RAM from within running Windows 2003? I suspect bad ram but don't want to plan an outage to test it (especially that getting into server room isn't the easiest). I know about ...
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76 views

tcpproxy tool showing weird malloc errors

I'm using tcpproxy-2.0.0-beta15 tool to proxy/PAT some remote connections and I use the config file for the tool. Everything was fine until it crashed and when I tried to start, I get this, ...