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

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better place for sensitive temp file, ram disk or hdd or ssd? [on hold]

my app saves a 1MB file and then another app reads it back. After that I want to sercure delete it. I thought about a ram drive because I know that even with a secure delete appl. something would ...
0
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30 views

AWS EC2 Instance with Windows 2008 R2 Datacenter Not Using All of Memory

I have an m1.large EC2 instance running with Amazon Web Services. The OS is Windows 2008 R2 Datacenter. It should have 7.5 GB of memory, and the desktop background indeed says: Total Memory : 7.5 ...
1
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23 views

Ubuntu 14.04 using 100% SWAP with more than 40GB free memory [migrated]

I'm a bit at a loss trying to figure out why this would be the case. Can anyone provide some helpful ideas on troubleshooting this? free -m total used free shared ...
1
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1answer
19 views

Server memory upgrade of IBM servers - can I use non IBM memory?

We just receive some old servers IBM servers (DDR2 and DDR3). We want to use them to upgrade our Test Area. I see that there are second hand memory with very good prices. Can we upgrade with other ECC ...
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1answer
21 views

Which RAM slots corresponds to CPU 1 on HP ProLiant BL460c G6

I have this server with 2 CPUs and 12 DIMMs. All slots are occupied. I need to change a faulty memory module. I know it's in the slot 3 (E) of the CPU 1. And here comes my question since I haven't ...
3
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1answer
37 views

Enable HugePages on Linux for multiple services/processes

On one of my Debian machines I'm running a service on a JVM and a MySQL instance. I have enable the HugePages following various online guides but I'm having a problem. Here is my configuration: ...
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1answer
30 views

make mysql to share all cpu

I am very new to linux server .I am using centos.Sometimes my cpu gets overloaded because of the process mysqld over 100% PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND ...
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18 views

Show historic hardware changes in windows 7 [migrated]

Brief question: In Windows 7, Is there a log where I can see the ram memory of the system at different dates? Explanation: A friend of mine have detected some missing hardware (ram sticks) on some ...
0
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4 views

Does the Linux kernel really use 601 MB of RAM on a 16GB system? [migrated]

I'm developing a compute cluster and I'm trying to determine the maximum amount of RAM I can give to a single process. On a machine with 16GB of ram, the answer is that I can allocate (and touch) ...
0
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3answers
32 views

How to decide on VPS good defaults for PHP and Wordpress when it comes to memory?

I have (only) 512MB to spare. The only thing running on my VPS is PHP/MySQL and on top of it Wordpress. No mail server or any other application, just Wordpress and LAMP stack. How to decide how much ...
0
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0answers
65 views

CentOS 99% memory usage

for the past week my CentOS VPS has had 99% memory usage. [root@server ~]# free -m total used free shared buffers cached Mem: 2048 2032 15 ...
4
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2answers
67 views

How much memory does my SQL need?

I have a VM (SQL database server) that I think has more memory then it needs, however I'm not sure what I can reduce it to because I don't understand exactly what "In use", "Available", "Committed" ...
0
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3answers
75 views

HP Proliant ML110 G6 RAM Upgrade Issues

We have an HP Proliant ML110 G6 server running here at work which presently has only 8Gb RAM installed. The RAM presently in the system is Integral IN3T4GEZBIX or in other words PC3-10600 unbuffered, ...
0
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1answer
19 views

Dell PowerEdge C1100 Memory Configuration

I have a Dell PowerEdge C1100 server with 48GB of DRAM (12x4GB modules, two modules per channel). Now I'd like to add some memory. I do not want to buy more 4GB modules, because it will give me a ...
0
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1answer
19 views

What is Slab, SReclaimable and SUnreclaim? What does Slab solve and how does it behave under load?

I have a server with 32 gigabytes of ram, with htop reporting 29 gigs used, with 4 gigs of swap in use as well. cat /proc/meminfo returns around 13 gigabytes of memory listed as SReclaiable. What ...
1
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1answer
38 views

xen vm memory missing

I have an Ubuntu server with 320GB of memory. I installed xen 4.4.1 on this machine, and run 2 Debian VMs. One with +-100GB of memory and one with +-200GB. Everything worked fine, until at one point, ...
0
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28 views

SQL Server total memory less than target memory, lot of extra memory unallocated [migrated]

The situation is the following: We have a SQL2008r2 server (64bit on 64bit Windows) with SSRS installed on it. The Max Memory is set to 6GB, the server has 12GB total memory. The target server ...
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37 views

elasticsearch glibc memory corruption

My elastic search clusters keep crashing for no reason. All I can see in the logs is : INFO | jvm 4 | 2015/04/17 19:10:09 | *** glibc detected *** /usr/java/jre1.7.0_04/bin/java: malloc(): ...
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2answers
50 views

How to find faulty memory module from MCE message?

I am trying to understand MCE message to find which memory module is bad on a server. This message appears in /var/log/kern.log in one server that freezes two times today. Apr 13 22:39:22 mbox ...
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0answers
33 views

Proliant DL160 G6 (SE316M1) nehalem (X5550) memory requirement

Currently I stripped the motherboard to the bare minimum: a) 5 fans (fan4 not connected, optional) b) 1 UDIMM 4gb (10600U) c) vga (checked cable) d) 1cpu in slot 1 I get no post, main helath led on ...
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19 views

Systems freezes + Memory issues

I have a Hyper-V 2012 R2 server and increased its RAM to 32GB from 16GB. (for a small business). 1-2 months after the upgrade the system started to freeze seemingly randomly. Whether it was posting ...
1
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1answer
42 views

Possible reasons for extremely low RAM usage on a debian 7 VPS

After a fresh install of a debian VPS, my system shows very low memory being used. I am not sure if this is even a issue. But according to 'free -m' My system is using only 21MB of RAM ...
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1answer
40 views

How to dump process in Windows Server 2008

I want to dump memory of windows process using just command line and without 3rd party tools. Is that possible if we assume that all necessary privileges aquired. Maybe it is possible to do using ...
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0answers
32 views

High memory usage (compared to wamp) and unresponsive site at times

Lately my site (with 260000 posts, 12000 images, 2,360,987 mysql rows and 450.7 MiB size) is running slow and at times not loading for many mins I installed this Debug bar plugin ...
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29 views

Striped Ubuntu box - minimal memory usage

I am currently building applications with Go, and since I can deploy binaries, there is no need to install servers, databases and whatnot. My question is: How much can I squeeze Ubuntu so as to have ...
3
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2answers
166 views

LXC container shows host's full RAM amount and CPU count

I've been using LXC containers for a few years and have recently expanded the types of applications that run inside of container environments. I'm starting to limit resources at the container level ...
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2answers
25 views

Confirm a memory leak by tracing “free” and “cached” in top?

I'm trying to confirm that there is a memory leak on my Linux device while in idle state (there should be no continuous memory consumption). I'm not interested in identifying the process that is ...
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13 views

What could cause Ruby's free heap slots to rapidly increase?

I'm diagnosing why our Rails servers seem to leak memory. In looking at New Relic today, I noticed that "Free heap slots" of our Ruby VMs seems to jump from almost nothing up to the baseline level of ...
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2answers
113 views

MSSQL 2008 r2 Express: there is insufficient system memory in resource pool 'internal' to run this query

I'm experiencing this error during the lifecycle of my DotNetNuke Installation. I've change the hosting server and now I've got a Windows Server 2012 with IIS 8 an SQL server 2008 r2 Express running ...
0
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2answers
49 views

See ECC correction count

I'm curious as to whether or not there's some performance counter that will log the number of ECC corrections required, that could perhaps be tracked as an early indicator of memory failure. I imagine ...
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58 views

How measure memory without copy-on-write pages?

How can one measure total RSS memory occupied by a set of (forked) processes, without double-counting shared and copy-on-write pages?
14
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1answer
271 views

What is the Rowhammer DRAM bug and how should I treat it?

DRAM chips are very tightly packed. Research has shown that neighboring bits can be flipped at random. What is the probability of the bug triggering at random in a server-grade DRAM chip with ECC ...
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33 views

Anon value from pmap list too high. how to lower?

I do not understand why apache is using so much memory. I ran pmap and received the following: 912117: /usr/local/apache/bin/httpd -k graceful -DSSL Address Kbytes RSS Dirty ...
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1answer
80 views

Growing memory use

Let me start with picture: This is memory usage of our backup Tomcat server. It is just hanging there, processing simple healt check request every couple fo seonds and waiting for main server's ...
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2answers
74 views

Is an ECC ram enabled GPU necessary for a server, or will a normal gpu work fine in a server?

Is it a requirement for a server to use ECC ram on a GPU while the normal CPU ram is ECC? Im thinking that instead of using a Quadro k6000 or AMD Firepro, we could use a GTX 980 or AMD r9 290...if ...
1
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1answer
467 views

System-wide JRE settings in deployment.properties file are ignored?

Basically I have the same problem as in this question. However the proposed solution doesn't work for me, not on a Win2003 server and not on a Win7 laptop used for testing. I have a Java SE 6 program ...
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1answer
44 views

Does swap on 32-bit OS with 4 GB make sense? [closed]

Does having swap space makes sense if I have a 32 bit OS (Linux) and 4 GB RAM already? As it would have to be addressable with a 32 bit address, which are already all "used up" by the RAM, would ...
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4answers
112 views

How can I find out what RAM is in my ProLiant DL380p?

I know what RAM is compatible with my server, but without taking the lid off I don't know what specific modules I've got. It took two seconds to find out from vSphere that I've got eight(8) 8GB DDR3 ...
1
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1answer
118 views

Linux memory usage higher than sum of processes

I'm trying to figure out what is eating my memory. I'm speculating that if it's not used by userspace processes then it may be from the kernel side. There is the output from some commands. I know ...
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0answers
93 views

Max memory for HHVM instance on vServer

Im tried hhvm on my vServer and have problems with the memory used. The performance is great, but the used memory consumption is horrible. I have a vServer with min 4GB and max 8GB memory and hhvm ...
0
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86 views

understand FreeBSD vmstat output about meory

My Dell PowerEdge server has 24GB memory and 6GB swap. It has some VirtualBox vms (virtual machines), one vm is assigned 10GB memory and no swap. Right now the vm is slow, the vm's vmstat output is: ...
2
votes
1answer
81 views

Adding new processor to HyperV server?

I currently have a HyperV Server 2012 R2 running on a motherboard that supports two processors, but currently has only one. It has 64GB of memory. I'd like to now add a second processor, moving half ...
0
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0answers
32 views

MongoDB mongos memory usage

Planning how to deploy a shard-ready cluster (Single shard at the moment, with all config servers and mongos processes), I've read the MongoDB operations best practices. I have doubts about the memory ...
6
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1answer
891 views

Linux high RAM usage for unknown reason

after searching around for this and only finding posts of people who do not interpret the "cached" figure correctly, I decided to ask this question. I have some servers at hand, which act strangely. ...
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0answers
17 views

How to ascertain where to effectively allocate server resources?

I have recently received an upgrade to one of my servers of a 256GB SSD drive (this is in addition to two other primary 1TB drives) and a memory upgrade bringing the server to 64GB from 32GB of RAM. ...
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120 views

PCIe card memory regions ignored on linux kernel 3.13

On my system, with kernel 3.13.0-32-generic (Ubuntu Server 14.04.1 LTS) installed, one of the PCIe boards in the system (06:00.0) is having it's memory regions ignored: Interrupt: pin A routed to IRQ ...
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31 views

in terms of latency what is better to install 4Gb or 8 Gb modules? single or dual rank? [duplicate]

I'm using Supermicro SYS-5018R-MR. There are 8 DDR4 slots available. It's enough for me to have 16 Gb of total memory, but if required I can install more. For better latency how much/what kind memory ...
0
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0answers
25 views

Poor memory performance on intel avoton?

I have 12 of these supermicro A1SA2-2750F boards that I'm playing around with in order to compare them to Dell's C5220s but I'm seeing consistent poor memory performance. Just curious if anyone's ...
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0answers
109 views

Ubuntu server memory fills up and Redis crashes

Here's /proc/meminfo: MemTotal: 7629488 kB MemFree: 237528 kB Buffers: 70536 kB Cached: 45612 kB SwapCached: 0 kB Active: 99400 kB Inactive: ...
0
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1answer
61 views

Dell server doesn't accept new memory modules

I am trying to upgrade a Dell T110 II from the 2 GB RAM that it came with (1 stick - 2GB - Samsung part number M391B5773CH0) to 8 GB using 2 x 4 GB 1333MHz memory modules (Corsair CMV8GX3M2A1333C9). ...