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

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Multibit error encountered on Dell Server Memory

Dell OpenManage reported the following: Memory device status is critical Memory device location: DIMM_B2 Possible memory module event cause:Multi bit error encountered What does this mean? How bad ...
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1answer
15 views

MySQL getting OOM-killed on a BeagleBone Black [on hold]

I am getting mysqld killed on a Beaglebone Black embedded PC and trying to find out how to fix this. Apparently the RAM is too fragmented, and only 384 KB of order 3 or higher is available, therefore ...
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2answers
26 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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0answers
19 views

How the network packets are transferred to the memory on linux? [migrated]

Is there some command or tool for monitoring network packets and how those packets are handled by the memory and than proceeded to the CPU on linux platform? Using tcpdump I can capture many apache ...
33
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9answers
9k views

Linux: how to explicitly unswap everything possible?

I've launched something that took lots of memory and now everything lags a lot. I guess all applications' memory has gone to swap in order to free some space for the memory-intensive process, and now ...
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0answers
10 views

CPU - RAM MONITOR TOOL FOR WINDOWS SERVER 2008 [duplicate]

I have a windows server 2008. I am looking for a free monitoring tool for CPU and RAM. My boss wants something really fancy and the one provided by windows is not what he is looking for. Anyone have ...
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2answers
245 views

How can I determine the fastest memory based on latency and bandwidth?

I've got some older hardware that needs a memory upgrade, and I was trying to determine what RAM would be the fastest on the platform. My platform takes DDR2 667MHz which is (slightly) more ...
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1answer
696 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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0answers
9 views

Cluster Manager Ignoring Config File

I have just setup my first cluster manually (not using the auto install) and it all works great. I have 1 SQL node, 2 data nodes and 1 management node (all on separate machines). I intend to port ...
6
votes
2answers
154 views

How can I prevent Windows Server 2003 from trimming a process's working set?

There are two different, though I believe related, issues I have with how Windows Server 2003 handles processes's working sets. First, there are GUI applications running on the console session whose ...
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3answers
68 views

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 ...
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0answers
5 views

Can I change my DDR PC 400 to DDR PC 2700? [migrated]

I just want to ask if I can change my DDR PC 400 to DDR PC 2700? I am having a hard time to find a DDR PC 400 here in our place. So Im thinking of replacing it to DDR PC 2700. Is it okay ? Hope ...
3
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1answer
46 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
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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vote
2answers
60 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 ...
0
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1answer
37 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
33 views

Server hangs when copying files, importing db etc

I'm running centos with Plesk ( kernel kernel.x86_64 0:2.6.32-431.11.2.el6). We upgraded to 48GB. Currently we are experiencing strange problem. Whenever we try to copy some file, import database, ...
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0answers
21 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 ...
1
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1answer
31 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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2answers
49 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 ...
5
votes
2answers
3k 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 ...
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votes
3answers
577 views

Available Memory Slots DL380G5

I have an HP ProLiant DL380 Generation 5 in a remote data center. Is there any way that I can check remotely how many memory slots are occupied (and more importantly how many are available)? The ...
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7answers
10k views

Windows Server 2008 R2 Metafile RAM Usage

I have a server which runs Windows Server 2008 R2 x64 with 4GB of RAM which hosts around 2-3 million files, the majority of which are image files. Over a course of a week, I have noticed that ...
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1answer
39 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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1answer
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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0answers
18 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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1answer
1k views

Suhosin.memory_limit does not allow PHP to use more memory

I have a server where PHP memory_limit is 256M. Some scripts need more memory and does a ini_set('memory_limit', '256M'); but since Suhosin is installed and activated, I find this in log file Sep 17 ...
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1answer
113 views

Our RAM usage is high, including -/+ buffer/cache, but top has no answers

We are running CentOS 6 with a PHP web application. After we pushed a new version live it seems we have a memory issue, however top does not show any high usage instances. I have looked around and ...
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2answers
9k views

Best Mysql cache settings for 8gb RAM dedicated mysql server using only Innodb (5gb database)

I'm a pretty big noob when it comes to setting up mysql for performance. And honestly I'm not worried about the fine tuning to squeeze every last bit of performance out of mysql, but I do know that ...
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0answers
20 views

Why would Memory\Available Bytes go down, even when Virtual Memory used is constant?

I have a long-running application that continually loops through video files. It runs for some hours, and then a message box appears along the lines of "The system is running low on memory...". I've ...
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0answers
62 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 ...
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3answers
7k views

How to create a RAM Drive (RAM Disk) in Windows 2008 R2?

There are lots of tools for creating RAM drives. None of them seem to work for windows 2008 R2. Does anyone know if this is possible and if so how. Does anyone know of a tool that does work? I've ...
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0answers
27 views

What happens to the files when they are being decrypted? [migrated]

I have the server's webroot directory mounted on a partition which is being protected with LUKS encryption. I want to know what happens to the files within when that partition is being decrypted. Does ...
0
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1answer
27 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
23 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 ...
2
votes
1answer
44 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 ...
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1answer
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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0answers
11 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
52 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.
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2answers
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find out which memory pages are owned by kernel

I can obtain a wonderful memory map of all processes with the Linux command pmap $(ps -A | awk '{print $1}'|grep -v PID) | sort | grep \^0 It looks like ... 00007fd6dbf45000 4K rw--- ...
2
votes
1answer
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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2answers
38 views

Understanding difference between system and process memory in htop

I'm a bit confused by the memory stats that htop is reporting on one of our servers. On the top bars, it's showing system memory as: Mem: 456 / 7950MB So, looks very low usage. However, my main ...
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0answers
23 views

KVM: RAM Usage vs. actual consumption on VPS [duplicate]

My VPS hoster is worrying about me consuming more than booked as guaranteed RAM. My VPS is most of the time almost idle, no DB or caching in background. It's only an nginx for hosting static files of ...
1
vote
2answers
46 views

troubleshooting out of memory error messages from mysql

we have a web application (racktables) that's giving us grief on our production box. whenever users try to run a search, it gives the following error: Pdo exception: PDOException SQLSTATE[HY000]: ...
1
vote
2answers
724 views

dell poweredge r210 II mix memory

I have Dell PowerEdge R210 II server with 4Gb of memory installed. And I also have 8Gb memory module. I replaced 4Gb with 8Gb – server is working ok. But mixing memory in different ways got error ...
0
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1answer
55 views

HP ML150 G6 upgrading RAM/CPU beyond specs?

I am being told that some limits on some HP servers can be crossed. Do any of you have any experience with that? A ML150/G6 is limited to 48GB RAM but I have been talking to a German company that ...
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6answers
1k views

How to make a huge ram drive?

At my old job when a report was needed I could sit down with someone and pull up results and get immediate feedback, and then refine my queries and ultimately have the data we needed, in the format we ...
4
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1answer
126 views

cgroups memory 16GB ceiling

I am trying to use cgroups to limit memory usage of user processes on servers with a large amount of ram (128 GB or more). What we want to achieve is to reserve about 6GB of ram for OS and root ...
4
votes
6answers
1k views

linux eats all memory, seems like it is not for specific application [duplicate]

The system is not overloaded and there is no huge process that eats memory (RAM) but still it has only 20-40 MB free. Who is taking RAM and should I avoid it? (how?)
12
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3answers
12k views

How to increase the amount of memory memcache uses?

I am currently on a Xeon 7550 server running Redhat x86_64 es5 with 32gb RAM. I have memcache installed and the only step remaining in the configuration is to set how much memory it uses. I had done ...