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

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HP Proliant DL360 G7 All DIMM indicator lights amber

I am currently doing a RAM upgrade on an HP proliant DL360 G7 server. After installing the new RAM (18x 8GB KTH-PL316E/8G) the LED indicator lights for every single DIMM turned amber and the health ...
2
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1answer
166 views

Startup Memory in Hyper-V dynamic Memory for IIS 7.5

I recently setup a 2012 server core with hyper-v. I then installed server core 2008 R2 as a client. Installed IIS and started hosting an internal website. I started running throughput tests and found ...
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0answers
194 views

PowerEdge R210 Memory Upgrade

I have a Dell PowerEdge R210 II running with 2GB of memory. I wanted to upgrade the memory to 10GB as I am running ESXi on the machine. I purchased an ECC RAM (2 x 4GB) which allows me to get the RAM ...
0
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1answer
81 views

How can we calculate a processes' contribution to “commit” (/proc/meminfo “Committed_AS”)

We are seeing a "leak" in "commit" over time, and need to track the offending process(es). RSS ("used" memory") isn't leaking, but the commit is, and its causing the kernel to behave very cruelly ...
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0answers
73 views

lxc - java out of memory issues

I have a set of virtual machines on lxc container that run Ubuntu 14.04. All share same host and some of them are currently experiencing problems with java. Running java -version throws OutOfMemmory ...
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1answer
151 views

centos + php leak memory, but where?

I have a big php cronjob that run every 20minutes. After each execution the RAM memory used by the virtual server increase and not properly free once the script is terminated! But why? The memory ...
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1answer
215 views

CentOS only detecting 50% of ram on IBM Server

I have IBM server with 16 GB RAM installed. Initially it showed 16 GB with free | grep Mem | awk '{print $2}' but now it shows only 8116136 but it must show 16439208 When I do dmidecode ...
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1answer
6k views

How does vm.overcommit_memory work?

When I use the default settings: vm.overcommit_memory = 0 vm.overcommit_ratio = 50 I can read these values from /proc/meminfo file: CommitLimit: 2609604 kB Committed_AS: 1579976 kB But ...
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37 views

xen: domu require more memory than mem-set size

Assume that we have install two guest os in xen, named dom1 and dom2. Now, I start the dom1 and dom2, and both are configured with max-mem=4096M; note that my physical memory is 16GB. While dom1 and ...
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0answers
175 views

Unusually high nfs_inode_cache

My server is experiencing a high usage of nfs_inode_cache = 11G , im trying to figure out what's consuming all this , i know already that directories with large numbers of entries and deep directory ...
0
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2answers
269 views

Unexplained high memory usage [duplicate]

My server started being unable to spawn PHP instances to respond to HTTP requests as there wasn't enough available RAM. Free -m shows a reasonable amount left, but top and PS don't seem to be able to ...
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1answer
2k views

Dell R610 memory configuration for all 12 slots

I purchased 12 sticks of RAM on eBay to go into a Dell R610 server. The RAM is ECC REG PC3-12800 DDR3-1600 yet when I occupy all 12 slots with this ram I get the following error on boot: MEMORY ...
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0answers
44 views

Why does oracle vbox virtual memory differ when VMs do the same thing and are clones of each other?

I am running a large box with 11 instances of 64-bit Ubuntu 14. MemTotal: 50 Gb CPUs: 8 CPUs are pretty much 100% all day long. Memory is at about 60%. Swap not getting hit. Little bewildered by ...
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1answer
187 views

lvresize: command not found - RedHat

No search results on google for this. So i am really confused now. I am trying to increase the swap space and lvresize says command not found. Please Help !! using RedHat 64bit
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1answer
75 views

TCP Server Memory management: #Connections Vs. #Requests

Given that, there is no theoretical limit to number of concurrent TCP connections a Windows 2008 server can handle. Only thing will happen is, with each connection there will be memory consumption in ...
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3answers
2k views

Mysql crashing, oom-killer, out of memory, tuning issues?

I just moved all of my websites to a new server with 4GB RAM. Almost immediately, mysql started crashing, and at one point, didn't reboot which caused a major outage (since I didn't notice until ...
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1answer
183 views

Loading a big database dump into PostgreSQL using cat

I have a pair of very large (~17 GB) database dumps that I want to load into postgresql 9.3. After installing the database packages, learning more or less how to use them, and fiddling around a little ...
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0answers
40 views

False flag multibit errors on highest populated DIMM socket on second CPU of Sunfire x2200. Faulty CPU or faulty motherboard?

I'm testing 2GB ECC Registered DIMMs in a Sunfire x2200. Recently the system event log (SEL) began logging Multibit Errors on the highest populated DIMM socket on CPU1. With 8 DIMMs on CPU1, the SEL ...
3
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1answer
541 views

In a HP server, can low voltage DIMMS and standard voltage DIMMs be mixed?

We are adding RAM to a HP Proliant DL380 G7 and were shipped standard voltage DIMMS. We have pre-installed some low voltage DIMMS. Is it acceptable to mix DIMM voltage in general? Is it advised? A ...
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11answers
12k views

Why drop caches in Linux?

In our servers we have a habit of dropping caches at midnight. sync; echo 3 > /proc/sys/vm/drop_caches When I run the code it seems to free up lots of RAM, but do I really need to do that. ...
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votes
1answer
493 views

Linux page cache slows down IO on dual cpu server with 64GB ram

I have a massive problem with the linux page cache which slows down the IO. For instance if I copy a lvm partition with dd, linux cache the data in the buffers or caches (free –m). That is not the ...
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2answers
255 views

Solr 4.5 uses too much memory on consequent queries, GC runs causing timeouts

There is a index on Solr 4.5 which contains ~50K documents taking ~4Gb on disk. Physical RAM available to JVM is 6Gb (out of total 10Gb on server), OS is 64bit CentOS 5. One of the applications ...
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1answer
644 views

ECC CE (Correctable Error) occuring every 5 minutes exactly

On one of our computing nodes I am getting ECC CE (correctable errors). What is a little bit peculiar about is is that errors are not massive, just a single occurrence exactly every 5 minutes. ...
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1answer
540 views

Docker memory leak?

I'm running Docker 0.9.0 uname -a Linux 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux I have 40 containers running at once. Each container is fairly ...
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1answer
107 views

yum update MemoryError 1G memory free

I am trying to do yum update and getting "MemoryError". The server (OpenVZ box) has 2G RAM and Percona MySQL server running with 1G InnoDB buffer configured. The OS is CentOS 6.5, kernel ...
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2answers
503 views

Memory mapping files for a blazing fast webserver on Linux

Is there any simple way of telling Linux to keep a directory of files cached in memory? I realized that Node.Js and Apache are spending most time on file I/O, making users wait if you have a lot of ...
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1answer
56 views

Is it possible to make KVR800D2D4P6 memory work on Intel DQ45CB

We have a self-made Intel DQ45CB based server/workstation in a server case in a datacenter. The system works just fine for it's purposes, but would do perfectly with a small memory upgrade. I've ...
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2answers
2k views

Can EC2 instances dynamically add RAM while running?

This would help contribute to 0 downtime for me if possible. As far as I know it is not possible, but wanted to be sure.
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3answers
764 views

Which settings schould be changed to lower apache CPU usage and use more RAM?

On our CentOS 6 server, we have now a lot of CPU overload, while our RAM is almost not used. KeepAlive is set to "on" because we have some AJAX elements on your website and serving many files such as ...
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1answer
532 views

Benefits to having a sole email VPS server

I have around 5 websites hosted in a VPS server, and for some reason I bought another VPS server recently just to host the emails for those 5 websites. I would like to know the pros and cons of having ...
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2answers
419 views

top and htop disagree on memory usage, but swap is being used on GlusterFS server. Can this be improved?

If I run free -m, top and htop, I get different memory uses. The system is also using a small amount of swap. I understand from this question why they are reporting different values (some of the data ...
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3answers
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Is it possible to see the RAM units configuration on HP ProLiant DL380 G5

I have an HP ProLiant DL380 G5 Server in the datacenter running Windows Server 2008 R2. I need to think about upgrading RAM on this server and decide on configuration of RAM units I am going to ...
3
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1answer
114 views

linux oops message, is memory address virtual or physical?

In this error message: BUG: unable to handle kernel paging request at ffff8804c001fade Is ffff8804c001fade the physical memory address or virtual memory address?
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1answer
710 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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2answers
78 views

Why is my server swapping at all?

Munin shows ram that is doing nothing most of the time. But swapping still happens. Quite regularly actually, bogging down the hdd. Or am I seeing the ram graph in the wrong way? How would I go ...
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votes
1answer
635 views

LImiting overall memory usage for child processes

I have a long-running script that launches several child processes on a Linux machine with 8GB of memory. After a few hours of running, it takes up nearly 90% of memory, and this makes other services, ...
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1answer
72 views

Read in effective RAM usage on Linux

I'm running some programs on *nix inside of a container and I'm attempting to closely calculate the amount of RAM my process is using. It is my understanding that this information should be under ...
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0answers
258 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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1answer
161 views

can Iowait cause significant RAM consumption increase

I have a node.js process running continuously on a linux EC2 instance, it extracts data and stores it in mysql. Some reads are also performed on the database. The process can run well during hours or ...
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3answers
2k views

PHP exec “unable to fork” intermittent error on CentOS VPS

Using: PHP 5.5.10 nginx 1.5.10 Centos 6.5 a xen-based 4GB VPS My site uses encrypted paypal buttons. This encryption is done by the following code: $openssl_cmd = "($OPENSSL smime -sign -signer ...
0
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1answer
106 views

Security Log eating RAM

I've been troubleshooting some hellacious memory issues on a lot of servers in my domain as of late. I recently found this program called RAMMap from Sysinternals and it showed that my entire ...
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0answers
145 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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111 views

How can i get Windows XP 64bit pro to recognise memory?

Looking for some help. We have a computer running Windows XP Pro 64bit SP2 (supported till April lol). It is dealing with lots of video feeds in our organisation and it only had 4gig of ram. So in my ...
0
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1answer
202 views

CentOS 6.4 64-bit Memory Usage really not adding up

I recently migrated hosting providers and in the process my distribution changed from CentOS 5.9 64-bit to CentOS 6.4 64-bit. Despite having a little more RAM (1 GiB rather than 768 MiB) the new VPS ...
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1answer
56 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 ...
2
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1answer
267 views

Installing DIMM modules in HP ProLiant DL180G6 not in recommended order

I have two DL180G6 servers, I used them with 2x2 GB RAM modules, now I'd like to upgrade the memory to 16 GB for each. I have spare 6x2 GB RAM modules per machine (parameters match for the existing ...
0
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1answer
66 views

RApache memory usage

I have a server with ubuntu 12.04 and it is installed Apache, PHP5, MySQL, and Apache module called RApache. I am working with grid data is processed dynamically. Each time the user makes a request ...
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1answer
81 views

how much openvz burstable memory can be used

I want to buy a VPS having openvz virtualization. Now the applications that i m currently hosting( glassfish, mysql, mail) requires around 600~800 MB of RAM. Would I be able to run my applications ...
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1answer
2k 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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1answer
264 views

Use Hard Drive as Ram for Hyper-V [closed]

Is it possible to use hard drive space as virtual RAM for Hyper-v? I am using Windows Server 2012 R2 Enterprise as the host and we are running Ubuntu 13.10 as the client OS.