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

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Has L2 cache stopped getting faster? [closed]

I was reading this question which references L2 cache hits as taking about 10ns: Are networks now faster than disks? However I distinctly remember there being 10ns cache ICs for the 486 generation. A ...
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1answer
150 views

/proc/XXX/smaps does not exist

I am trying to debug what is going on on an ubuntu server. I tried to use my good old friend smem but it does not display anything, even if run as root. strace shows the culprit: ...
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1answer
263 views

Monitoring memory of AIX 5.3 LPARs

I'm currently administrating an IBM Power 740 server via an HMC. We have four LPARs running, two VIOS LPARs, one application LPAR and one database LPAR. We have implemented lpar2rrd to monitor CPU ...
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1answer
3k views

MariaDB / MySQL using a lot of threads / memory

I've been setting up a new VPS and wanted to try out MariaDB. I'm using MariaDB 10.0.1, which as far as I understand it is the equivalent of MySQL 5.6. Has the thread handling of threads changed ...
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2answers
633 views

How Can I Maximize Apache Performance on my Server - Need Calculations Please [closed]

I have a Sun T5140 server with 8GB of memory and two 4-core T-Series CPU's (128 max threads). This server is a dedicated web server. Based on the premise that I'm willing to allocate 1/2 of the ...
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1answer
50 views

Will uploading a 1.4gb video to my server and letting users watch it fill my servers RAM/Virtual Memory and crash the server? [closed]

I'm a bit unclear how the the RAM is used in this particular instance, so I'm wondering if when a user watches a video on my server, does it go from the filesystem, "out through the pipes" and onto my ...
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1answer
63 views

MS SQL Express - Memory limitation vs. web application [duplicate]

I have web application that will be similar to forums. I plan to have few thousands+ users on this application, and i wonder if i can use MS SQL Express - here is the list of it's limitations: ...
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1answer
432 views

How to know which application is consuming the ram?

I have the following process list and memory consumption (reported thru process explorer) on a 2008 R2 server with SQL, TFS and some other tools: As you can see the system is consuming 3.6 Gb but ...
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1answer
150 views

sizing memory for virtual ETL server - is paging recommended?

I am working on the sizing for a virtual server to be used for Business Intelligence ETL processing. We have an existing server from which I can observe the expected trend on the planned one - almost ...
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0answers
274 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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1answer
144 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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2answers
216 views

will putting files to /dev/shm appear in HDD

Hi i heave heard that what ever we put on /dev/shm will be moved to ram disk. I am having a situation where /dev/shm is 3 GB and / (5GB) became 100%,only file using that much space is /dev/shm ...
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1answer
346 views

cacti graph memory usage on server

yesterday for the first time I have installed into my server cacti to view the performance of the memory of my server because sometimes go down. I have make an image of the memory usage graph. Can ...
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1answer
205 views

How to determine what is using all my server resources

I am having issues where my hosting account keep crashing due to running out of memory usage. I have a VPS Linux hosting account with 1Gb RAM. Recently whenever I make any changes to my site and ...
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2answers
54 views

What's the difference between scaling memory and scaling instances in cloud hosting?

I've been playing around with a free account on appfog.com and this question came to mind. What's the difference between scaling memory and scaling instances? For example, what is the real world ...
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1answer
647 views

Sum of memory of few processes in top is greater than 100%

I'm trying to calculate the amount of memory used by AMP in an LAMP stack machine. top -bn1 | grep -E '(mysql|httpd|php)' | awk '{mem += $(NF-2)} END {print mem}' But the sum generated using the ...
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0answers
54 views

High load cause? [duplicate]

Possible Duplicate: what is my server high load cause (4 cores and 8 thread cpu) What is my high load cause? CPU,RAM or IO? 4 Core, 8 thread cpu top - 22:27:07 up 149 days, 5:26, 1 ...
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1answer
766 views

java 7: should users be aware of changes in heap memory handling?

After installing the latest Java 7 Development Kit (Java SE 7u11) on my Windows 7 Professional 32bit PC with 4Gb RAM, I noticed I can't allocate much memory for Tomcat. Whereas these memory settings ...
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1answer
68 views

How to set memory limit on OS level to overcome problems with “Burstable memory service”?

I have VPS. It has Burstable memory service. My guaranteed memory limit is 1GB. I want linux not to take more that 1GB to programs on OS level. How to do it? It is ubuntu server.
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2answers
502 views

Avoid a crash when a process allocates too much memory?

Similar to this question, we have a computing server with 96GB of RAM that is used to run large jobs in parallel. Occasionally, the total amount of physical RAM is exceeded, which causes the server ...
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1answer
511 views

Php5-fpm too much memory usage nginx and ubuntu 11.04 32bit

I recently got vps with 512MB ram. I install nginx 1.2.4 with ph5-fpm and a simple wordpress installation . I currently have no traffic as its in development mode.But still It shows 495MB used and 80% ...
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2answers
927 views

XEN kernel shows less memory 32g

I have installed Oracle Enterprise Linux 64bit on the server with 64g of RAM. But the system detects just 32b of memory, here are the details: [root@oracle-node2 ~]# uname -a Linux ...
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1answer
265 views

Bit flipping - detection and reasons

About a week ago I experienced one very interesting situation. I had a workstation - old desktop with Asus P5LD2 motherboard and 4 x 1 GB non-registered DDR2 Kingston memory. That same machine was a ...
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3answers
1k views

Optimizing VPS Server Memory

WHAT I'M TRYING TO DO The server resource limits sometimes run tight; to help prevent memory exhaustion, I've had to limit server processes. I'm needing a little expert help to know if I'm on the ...
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3answers
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Why Are My High CPU Processes Located In /usr/bin/?

I keep getting RAM and CPU spikes but I can't figure out where it is coming from. If I look at the Process manager, I see, /usr/bin/php /home/hellohel/public_html/index.php Repeated several times. ...
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1answer
122 views

Where is my RAM going? Top command included [duplicate]

Possible Duplicate: How to understand the memory usage and load average in linux server Tasks: 39 total, 1 running, 37 sleeping, 0 stopped, 1 zombie Cpu(s): 0.0%us, 0.0%sy, ...
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1answer
102 views

Windows Server 2008 64-bit RAM going somewhere

I am looking after a server that has 6GB of RAM. There is a JAVA binary running that is using 1.8GB RAM, but nothing else is using anything near that, but I am seeing a constant 85%+ usage of physical ...
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1answer
297 views

Esxi Host: acceptable memory overcommitment

How much can I overhead the physical memory of my host assigning memory to my guest machine? Example: Host physical memory:10 GB Is it acceptable for example assigning 2GB of virtual memory to 7 ...
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1answer
680 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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2answers
140 views

Hardware Diagnosis: Different Ram, Same Memtest Failure

Trying to diagnose random hardware freezes and did the natural thing; started memtesting everything. DDR400 DDR2 Ram CAS 5-5-5-18 Four sets of sticks; 2x2GB PNY's and 2x1GB Elixirs So far I've ...
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1answer
75 views

Is there a way to free swap?

After using vmware player with some virtual machine, it seems like my swap stays quite occupied and it doesn't changes unless i reboot it. However, regularly swap is not used much by other ...
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2answers
537 views

Ubuntu: forcing processes into swap, or into RAM

I am now solving the following problem on Ubuntu: Is it possible to specify if one process should run only in the RAM (i.e. is not allowed to swap) or reversely only in the swap part? I mean that the ...
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1answer
864 views

Why would nscd use a huge amount of RAM?

My server seized up. It was virtually unusable. This seemed like a likely culprit: root 1037 0.0 92.6 1455696 958368 ? Ssl 2012 3:57 /usr/sbin/nscd That's 92% RAM. I killed it to get ...
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2answers
204 views

What is the best way to get ubuntu webserver cpu and memory load chart? [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? I have a simple ubuntu 12.04 server that runs nginx, gunicorn and some python WSGI websites. Every morning i want to see ...
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2answers
77 views

Historical data / logs on what RAM and disk storage used to be in Linux? [closed]

Is there any historical data / logs in my VPS that can show what the RAM and disk storage used to be? My hosting provider reduced my RAM and disk storage from 1.5GB and 150GB to 1GB and 100GB ...
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2answers
3k views

How do I upgrade my HP ProLiant ML150 G6 server RAM?

I want to upgrade the RAM on two HP ProLiant ML150 G6. They currently have 2 dimms labeled 2GB 2RX8 PC3-10600E-9-10-E0. I believe these are UDIMMs? The servers have a total of 12 memory slots. In ...
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0answers
530 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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1answer
139 views

How to find Apache memory utilization?

I want to measure memory utilization of my Apache Server. Can I use the pmap/ps command and pass all the process IDs of httpd and take that as total utilization? In most of the blog, they suggest ...
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1answer
155 views

A brand new VPS with high system overhead for RAM. Should I worry? [duplicate]

Possible Duplicate: Why is Linux reporting “free” memory strangely? I recently bought a cloud VPS (CentOS 5.8 x64) with 1024MB RAM from one of the hosting providers. It's managed and has ...
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2answers
434 views

Tuning OpenVZ Containers to work better with Java?

I have a 8 GB RAM Server (Dedicated) and currently have KVM Virtual Machines running on there (successfully) however i'm considering moving to OpenVZ as KVM seems a bit overkill with a lot of overhead ...
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2answers
385 views

Web Server crashing due to memory errors. It's like clock work

I have an IIS server that is crashing at about 3:15 am every Friday and Saturday. I understand that swapping out DIMM A in Bank 1 would probably fix the issue. But I would like to hopefully resolve ...
2
votes
1answer
187 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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4answers
6k views

Minimal Windows 2008 or 2012 memory usage

What are the minimal memory usage for Windows 2008 & 2012 server editions? I'm referring to all things OS-related. The machine would be a VM with a dedicated web server software, that wouldn't ...
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1answer
179 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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3answers
76 views

Running a LAMP application entirely in memory

Our company uses a PHP/MySQL-based project management app heavily. So heavily that the app is really starting to slow down. It's not that the app is running out of memory -- I never go above 50% ...
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1answer
640 views

How can I use the uWSGI Emperor to limit resources to a given amount for all apps (instead of per each)

I have a Django application for which I want to limit the resources used by uWSGI to 12288MB and processes (workers) to 6. With 3 separate apps, I can limit each to 2 workers, and each worker to ...
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3answers
211 views

memtest86+ crashing on server

We have a few DELL 1950 servers. One of those servers has CentOS6.3 and it's randomly rebooting, so I suspected it was hardware (no log generated). The other four servers do not randomly reboot. We ...
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1answer
321 views

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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3answers
2k views

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
202 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 ...