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

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4
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2answers
960 views

Does my Centos server leak memory?

I'm getting some conflicting information regarding the memory use of a virtualized server. The most alarming information is this: Note that the server has only 4GB of RAM allocated, even though ...
2
votes
1answer
113 views

Why so many apache slots marked as “busy”?

During the month of May there was a spike in the amount of busy apache slots. What could have caused this spike? If you look at Google Analytics (included below) there isn't really a change of ...
2
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1answer
1k views

Too many apache processes?

I'm wondering why my server has so many free apache slots open. The server only has a couple of busy and idle slots. Please look at the attached images for the amount of process used by the server ...
0
votes
1answer
455 views

Munin and odd server memory usage [closed]

I've been analyzing my munin graphs and found that my server's memory usage is quite high. Question: Is my server memory usage too high? If it is should I: get a larger EC2 instance with more ...
1
vote
1answer
106 views

How to determine httpd memory usage

If I have this output from top for httpd, how do I determine its total memory usage? 16924 apache 20 0 203m 7108 2852 S 0.0 0.2 0:03.48 httpd ...
3
votes
3answers
381 views

Disadvantages of a large swap partition

I'm aware that there is a huge performance decrease when using swap memory, but if you have wasted hard drive space is there any disadvantages to having (hopefully not using) a large swap partition?
3
votes
2answers
2k views

Why is my KVM, RHEL6.2 server swapping?

I have a RHEL6.2 server that I'm using to run KVM virtual machines. The server itself has 16 GB of RAM. I want to see the biggest VM I can run on it and not let the qemu-kvm process swap. The VM ...
-1
votes
1answer
488 views

How much RAM do I actually have?

I have a RHEL 3 machine that is part of a VMWare cluster. In VMware mgr Im told the machine has 24Gb of RAM As built it had 8 GB of RAM Looking at /proc/meminfo Im told [root@vmware1 root]# cat ...
2
votes
3answers
2k views

httpd using hundreds of mb memory

I have a MediaTemple (dv) 4 server with 512mb running Apache 2.2.21 64-bit. Within 60 seconds of starting, httpd is spawning 2-4 processes, each consuming ~150mb of memory (according to top's 'RES' ...
3
votes
2answers
3k views

Tomcat- How to check the memory settings currently in use

I have set up a Tomcat server using Server 2008 and IIS 7. How can I tell if the JAVA_OPTS environment variable is actually being used? I've heard before that the I have to edit the service.bat file ...
0
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0answers
109 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 ...
0
votes
1answer
1k views

An oom killer that I cannot explain

I am not able to understand why would kernel issue this oom killer when I see enough memory is available: I say enough memory is available after looking at Normal DMA Normal free lines This is an ...
0
votes
2answers
209 views

Memory-consuming servlet crashes Tomcat

I have a Tomcat server that serves many webapps, each with many servlets. Sometimes, a single servlet of a single webapp runs out of memory, and then the entire Tomcat crashes with a Java "Out of ...
0
votes
2answers
1k views

High memory usage, where is it coming from?

I have a virtual machine (Windows 2008 Server R2 64 bit running on vmware esxi 4) with 6 GB of installed RAM. It's reporting 95% memory usage and close to 0% CPU. This server hosts some WCF services ...
7
votes
1answer
5k views

How do you get the minimum and maximum memory allocation of a SQL instance using T-SQL?

I'm managing about 90 SQL Server instances and need a query to determine how much memory has been allocated to each instance. Please note, I'm not asking how to set it, just to see what it's currently ...
4
votes
2answers
3k views

Apache “httpd” process, utilizing all my servers memory

My small ec2 instance with 1.7 GB memory, running the Amazon AMI based off of CentOS, has an issue with Apache utilizing way too much memory than it should. If you take a look at the screenshot, the ...
1
vote
4answers
3k views

CentOS 6.3 X86_64 RAM detection

I have a machine with 8GB ram (BIOS sees it, so my motherboard and CPU supports it), and I installed CentOS 6.3 on it. When it starts up, it only see 3.1GB. uname says: 2.6.32-279.1.1.el6.x86_64 #1 ...
6
votes
3answers
1k views

where is memory gone (no, not buffers or cache)

can anyone tell me where the memory is gone: (no, this time neither buffers nor cache) # free total used free shared buffers cached Mem: 3928200 3868560 ...
1
vote
1answer
212 views

VMWare memory usage issue

I have VMWare Workstation 8 installed on my host OS and my host OS is configured with 32 GB of RAM. 3 VMs were created and all of them are set to use 4 GB RAM. These VMs are using Microsoft Windows ...
1
vote
1answer
291 views

How can I optimize system resource usage for many different gunicorn powered Django sites with low traffic?

My server is a Linode with 768MB of RAM. It is home to around 8 small, low traffic Django sites powered by Nginx, Supervisor, and Gunicorn. Currently, each site has its own Linux user account, with ...
1
vote
1answer
1k views

Centos is using all memory for cache and not giving it up

total used free shared buffers cached Mem: 1024 1020 3 0 0 859 -/+ buffers/cache: 160 863 With 863 ...
0
votes
1answer
107 views

Database server size

I received a recommendation from my hosting provider noting that a general rule in production server management is to ensure that the memory on your database server is larger than the size of your ...
1
vote
3answers
772 views

Setting memory_limit in php.ini - can I use all of the available system memory?

Sorry in advance for the newbie question, but I have a dedicated virtual server I'm working on that has 512MB of RAM memory. I've recently changed the memory_limit from the default of 128M to 256M. Is ...
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votes
3answers
575 views

How to know the maximum capacity of memory/RAM of a server? [closed]

I have a Dell PowerEdge T410 and have installed 16Gb RAM for it. I don't know if I can extend it to 32Gb, 64Gb, ... RAM on this server corresponding to my customized configuration So my question ...
0
votes
1answer
634 views

My server is running out of memory, despite having all swap free

I am using Debian 6 (Squeeze). The server has 4gb of memory in it, and 8gb of swap. I'm starting to get memory alloc errors at high application load times, but from top command: Mem: 4055944k ...
0
votes
1answer
2k views

Libvirt / QEmu Machine Fails and Refuses Restart Because of Memory Allocation Errors

I'm having a problem with libvirt. On a system restart all virtual machines (VMs) are started without a problem and keep running. Then at some point in time a set of machines shuts down according to ...
2
votes
1answer
194 views

Windows 2008 R2 Enterprise SQL Server Enterprise 2008 R2 only using half the memory

We have built a new 2 CPU, 6 core server, with 96GB of RAM. SQL server Enterprise Edition was configured with a maximum memory setting of 92GB. A few days after adding into the load balancer I have ...
0
votes
0answers
256 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 ...
4
votes
2answers
1k views

How to run GPGPU Memory Testing

We use a lot of GPGPU computing (mostly with CUDA, but some OpenCL). Often when users are running code, the code errors out with a memory error on only one of our hosts. I suspect one of the cards ...
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votes
2answers
82 views

Server Free Memory [duplicate]

Possible Duplicate: Free / Cached / Available memory on Linux My Redhat server shows the following: free -m ============= total used free shared buffers ...
1
vote
1answer
2k views

PHP memory_limit local value does not match php.ini value

CentOS system. Summary: changed memory_limit in master and local php.ini and yet no change in the local value for a particular virtual host. Trying to improve performance, I set the memory_limit to ...
1
vote
1answer
290 views

UWSGI --cheap and --idle modes - expected behaviour

I'm running django on uwsgi using the following command uwsgi --master --cheap --idle 60 --http-socket :8084 --wsgi-file /var/django/mysite/django.wsgi Typically my processes sit at around 10mb ...
4
votes
1answer
90 views

How to lock a process in RAM (make it unswapable)

Is there a way to instruct the kernel (Linux kernel) to never swap a certain process that has already been started?
0
votes
1answer
154 views

CentOS - Convert swap memory to regular?

Take a look at this screenshot that I took after doing free -m: http://gyazo.com/aa54d264956e56acb99024e2374de0c0.png?1340387738 I notice that I have a ton of swap memory not being used, could I ...
1
vote
1answer
254 views

mongodb eating 48G in 1min

In mongodb i work with this collection: Size 55.93g Data Size 39.82g Storage Size 41.08g Extents 53 Indexes 4 Index Size 9.64g It takes few seconds of mongdb being up with this ...
0
votes
4answers
2k views

Coldfusion on VPS, how much JVM heap memory?

Recently I got a VPS server and I'm running Coldfusion, the website was running fine until it got more and more traffic and I started to encounter 'OutOfMemory' exceptions. I thought simply to rise ...
-1
votes
1answer
133 views

Page Fault of 1,000,000 in 64 GB RAM Server [closed]

I have a 64 bit Machine that runs SQL Server. It has 64 GB RAM. It is giving around 1,000,000 Page Faults per second. Is it OK or it is giving too many Page Faults? if the number is hign the what ...
-3
votes
2answers
336 views

How much RAM a server needs?

I am going to develop a simple system of Perl CGI scripts which do email sending, file storage, and simple HTML user interface. The data should be stored in a MySQL database, HTTP is served with ...
1
vote
1answer
1k views

MySQL on Linux out of memory

OS: Redhat Enterprise Linux Server Release 5.3 (Tikanga) Architecture: Intel Xeon 64Bit MySQL Server 5.5.20 Enterprise Server advanced edition. Application: Liferay. My database size is 200MB. RAM ...
-2
votes
1answer
108 views

Upgrading Dell R5400 from Windows Server 2003 32Bit to Windows Server 2008 R2 [closed]

This is a newbie question... I have a client with a Dell R5400 machine. They are seeking additional services from us to upgrade their machine from Windows 2003 to Windows Server 2008R2 and also ...
7
votes
1answer
379 views

How is this even possible? PHP memory error — allowed memory size / bytes exhausted

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 1540673 bytes) in /home/appdev/glicious/Nutrition.php on line 41 If you haven't noticed, 134217728 is two orders of ...
-1
votes
1answer
56 views

does my machine configuration make sense? [duplicate]

Possible Duplicate: Can you help me with my capacity planning? i couldn't think of a better place to ask this question, so here it goes. we're putting together a dedicated server for a ...
-1
votes
2answers
532 views

Concerning memory usage statistics on debian squeeze

So I have a server, and I'm being reported different/strage memory from several locations and I'm having trouble understanding what it all means. Take this for example: root@****:~# free -m ...
-1
votes
1answer
182 views

Cache Total Entries increase and decrease as a delta shape. Why?

My performance counter "cache total entries" "cache total hits" "cache total misses" keeps increasing and decreasing as a delta shape around every 1 hour.The decreasing is much fast than increasing. ...
1
vote
3answers
186 views

Is there a way to disable Tomcat memory limits?

Inside the /etc/tomcat6/tomcat6.conf file, the JAVA_OPTS configuration line gives me the ability to set memory limits for Tomcat. For example: JAVA_OPTS="-Xms256M -Xmx1024M -XX:MaxPermSize=256m ...
5
votes
2answers
4k views

Can I mix Low Voltage (LV) ram wiith Regular Voltage RAM?

I heard from our vendor that it is okay to put Low Voltage ram with regular voltage RAM. They said all that would happen is that the LV RAM would ramp up to match the 1.5v ram (in other words, the ram ...
-1
votes
1answer
479 views

Nginx , Apache , Mysql , Memcache with server 4G ram. How optimize to enought memory?

i have 1 dedicated server with Nginx proxy for Apache. Memcache, mysql, 4G Ram. These day, my visitor on my site wasn't increased, but my server get overload always in some specified time. (9AM - ...
0
votes
1answer
59 views

VPS inusable, out of memory errors

I have a VPS with 512Mb RAM, 20Gb space and 100Mbps bandwidth. I'm rather new at configuring servers.. I'm using this VPS to host some websites of mine. It's running Ubuntu Server 12.04. Every TOT ...
3
votes
2answers
1k views

How can I check if my DB needs more RAM?

How would you check if your postgresql DB instance needs more RAM memory to handle their current working data?
6
votes
5answers
2k views

Free / Cached / Available memory on Linux

I have read that linux uses free memory for caching, to make system faster. However, both Nagios and Paessler PRTG monitoring system show me that my memory usage is critical. I could change Nagios ...