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

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The difference in performance of different memory mount in dell poweredge R430

There are 3 servers R430 (S1, S2, S3). All of them have 2 procesors and 8*8GB of ram in slots A1-A4 and B1-B4. There is a need of extending memory. I've read dell recomendations ...
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1answer
25 views

Is it bad to use swap with SSD when running a server out of memory?

I have DigitalOcean VPS, which has 2GB of memory. I'm soon running or am about to run out of it. How big is the performance hit if I use big swap? DO use SSD has harddrives, and I'm not the one who ...
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13 views

How to allocate more resources to Node.JS process?

I'm not a (very good) back-end developer so understanding processes and memory are a little about my pay grade. I'm currently building an app using the MEAN stack. I have a separate Express server ...
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1answer
25 views

Redis memory usage impact on performance

While performing health checks of a Redis 2.8.19 setup running on an 30GB Ubuntu Server 14.04 LTS, I noticed that Linux memory usage was split as follows: Used memory : 10GB Cached Memory : 10GB ...
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1answer
951 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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3answers
965 views

Evaluating uncorrectable ECC errors and fallback methods

I run a server which has just experienced an error I've not encountered before. It emitted a few beeps, rebooted, and got stuck at the startup screen (the part where the bios shows its logo and begins ...
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0answers
30 views

RamMap shows millions of processes that Task manager doesn't

I have a server 2008 box with 32GB RAM on and i have been investigating why it runs out of memory every 150 ish days. Task manager shows that we are running at 99% memory usage but all the processes ...
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2answers
39 views

How to find out if slot or memory bar is broken

Today my Dell T7400 suddenly started to beep at startup. I figured out is likely to be a memory issue. I have used all eight (RAM ) slots (8x2GB). By removing / adding bar by bar I was able to ...
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2answers
10k views

What does the sync command do?

I know what it does... I guess I am curious why it is fixing a problem in an application i've inherrited. I took over a fairly large tomcat application which acts as Red5 server for a bunch of flex ...
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4answers
4k views

How to troubleshoot a big memory issue with Apache and mySQL

I've read a lot of this website to optimize my server but nothing has really helped me :( Im having a memory trouble I think , I have just one website (Drupal) with 860K page views month but when the ...
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1answer
51 views

Is there a way to make /tmp mounted as tmpfs to use only swap? [closed]

I have a swap of 64 GB SSD. So is there a way to make /tmp mounted as tmpfs to use swap alone and not use RAM?
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1answer
1k views

Maximum amount of memory per session with IIS/.NET

I'm troubleshooting some memory issues we're running into with a heavily used ASP.NET site hosted on IIS6. Intermittently we have to manually recycle our application pool (process) to resolve issues ...
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3answers
2k 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?
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1answer
51 views

Create a block device in RAM

One of my day-to-day tasks is to create a bootable image of a USB pendrive with our software on it. The image must consist of two partitions, first one formatted with FAT32 and second with EXT3. On ...
2
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1answer
34 views

w3wp/asp.net High memory usage - Is this problematic?

We have a asp.net (.net 4.0) webapplication that is installed in several environments. In most environments, the memory usage is somewhere around 1GB. However, we have one environment where the memory ...
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40 views

Strange memory usage behavior in JBoss machine with Linux

I´m having a strange memory trouble with a Linux box with two JBoss instances and one Tomcat instance. All was working fine until last 20/jul. After that, the memory available (total used - buffers - ...
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0answers
19 views

Can't change memory_limit on PHP 5.5.9 on Ubuntu 14.04

I'm running PHP on Nginx using fpm. The reported memory_limit is 128M and i cannot change it for the life of me. PHPInfo: Server API: FPM/FastCGI Config file: /etc/php5/fpm/php.ini Memory ...
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38 views

OOM Killer not triggering?

I'm working in an environment which has just been upgraded to Amazon Linux 2015.03 from Debian 6, quite a big jump. On the new platform a server instance has locked up a few times due to running out ...
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0answers
12 views

How to monitor MongoDB cursors

I have a MongoDB cluster with 1 PRIMARY and 2 SECONDARY servers. In the last couple of days the number of open cursors has risen from 10-20 a sec to more than 2K and keep rising. I'm getting a lot of ...
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0answers
25 views

What does it mean when memtester reports errors only in the arithmetic tests?

I know I have memory errors on this server so I took it offline (it doesn't have ECC RAM unfortunately ...). I also don't have physical access so I'm using the inferior memtester (versus something ...
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1answer
20 views

slurm AllocMem always 0

When running jobs with --mem or --mem-per-cpu the AllocMem stays 0 when the job is running. # scontrol -V slurm 2.6.5 # sbatch --mem=2500 tmp.sh Submitted batch job 25 # squeue JOBID ...
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1answer
1k 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
992 views

Track memory usage of a job on SGE

I'm looking for some guidance in how to precisely figure out how much RAM my job is using on my cluster. My job is not multi-threaded and runs on a single cpu. When I run my job and run "top" I can ...
4
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1answer
939 views

1GB VPS - Apache Worker MPM - FCGID - Max concurrent connections - RAM CAP

I have spent a week or two researching and setting up my server to run Apache with the Worker MPM and FCID. I am trying to optimize it to allow for the most concurrent connections possible. It has ...
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2answers
488 views

Can one root server handle over 50M requests per month? [duplicate]

I am running a LAMP Application installed on one server, happily serving about 1M PI per month. Now I am looking into a potential partnership where my app might serve around 50-80M requests per month. ...
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1answer
36 views

memory high issue on RHEL server?

18105 /wm/www/tmmy/ 2.2 1128256 1683020 16961 /usr/sbin/httpd 2.4 1201668 1692788 27746 /usr/sbin/httpd 2.4 1217296 1701612 31519 /usr/sbin/httpd ...
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2answers
54 views

How many SSDs are needed to assure redundancy? [closed]

If we consider, hypothetically, that a server farm is being designed to have 100TB of storage using solid state drives (SSD), each with 250GB each. My question is how many SSD are needed to ensure ...
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1answer
904 views

Can ECC Chipkill be used in non-IBM servers?

Can IBM specific ram, such as 41Y2770 with ECC Chipkill, be used in non-IBM servers?
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34 views

KVM host won't use memory for caching

I have a KVM host (Linux 3.14.32) running 8 virtual machines. They are overprovisioned (memory allocated for them is greater than available physical memory on the host). However they consume only ...
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23 views

Windows equivalent of Linux vmstat pswpin and pgfault?

Is there a way to query Windows for the total number of pages swaped in / out and total amount of page faults? (values found in /proc/vmstat on Linux) I could only find ...
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1answer
107 views

G-Wan uses all available memory

I've installed the latest at the moment g-wan web server (4.3.14 x64) on a KVM VPS with Ubuntu 14.04.02 x64 server edition provided by Vultr ( 1GB RAM, 1 CPU core and 2GB swap ). The VPS setup is ...
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1answer
3k views

MySQL (MariaDB) crashes frequently

I recently migrated an old server running MySQL to a new VPS running MariaDB 5.5. I don't have too much running on the server (just a few PHP sites) and free memory seems to be OK, but the DB keeps ...
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2answers
634 views

Troubleshooting a Redis Stall

We have several redis instances running on a server. There are also multiple web tier servers connecting to those instance that experience a stall at the same time. We had packet captures going at ...
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1answer
3k views

Ram recommendations vs SQL DB size

we have a medium sized SQL db of around 40GB, and are about to move it to a new box with server 2008 r2 x64 an expensive contractor has just come in and said we need 72gb of ram so that the whole DB ...
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21 views

I shouldn't use both RDIMMs and LR-DIMMs on the same motherboard, right?

I tried to use on the same motherboard at the same time: Three LR-DIMM memory sticks, Four RDIMM memory sticks. The server refused to start; when I use either three LR-DIMM sticks or four RDIMM ...
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22 views

SSD vs RAM - Optimal ratio for different data sets / databases [duplicate]

I am looking for an advice or even better some studies / benchmarks to read for different scenarios (data sets) when it comes to the best ratio between actual RAM and SSDs. I know that fitting the ...
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0answers
43 views

Java out of memory exception when running as a non root user

I'm attempting to run apache kafka on a small basically stock digital ocean server running centos 6.6. I'm not positive if this issue is kafka specific or not. When I run kafka as the root user ...
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32 views

vSphere | VMs are balooning and swapping | sched.mem.max paratmetar does not exist

I have two VMs in ESXi5.5 environment that are swapping memory. After a long research I found out the below two articles where it is explained that one must compare the values of memsize and ...
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1answer
18 views

C891FW-E-K9 Memory upgrade

I have a C891FW-E-K9 ISR with ios c800-universalk9-mz.SPA.154-3.M-2. From what I can gather, the memory requirements for that image is 512MB but from "show version" my router seems to only have 384MB ...
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2answers
1k views

T410 Memory upgrade Mixing Size&Clock

We have a Dell T410 server using : A4/B4 - A1/A1 - 2GB/2GB 1066mhz A2/A2 - 2GB/2GB 1066mhz A3/A3 - I have 2x4GB 1333mkz for upgrade to 16GB. But : A4/B4 - A1/A1 - 2GB/2GB 1066mhz A2/A2 - ...
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1answer
1k 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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1answer
87 views

Out of memory for Wordpress sites on cPanel Nginx Hybrid VPS

I have a cPanel Hybrid VPS below are the specs: CPU (16 Core Xeon) dedicated 4GB Guaranteed RAM (dedicated) 6GB Burstable RAM 1Gbps Port Speed Installed cPanel and NginxCP All sites on server ...
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1answer
30 views

Expand linux memory to disk [closed]

I know you can create RAM Disks but is there a way to turn disk space from say a USB drive to RAM? I have a small router based device with SSH and I would like to install a side app on it. The ...
0
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1answer
143 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 ...
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19k views

Memory usage per user in Linux?

Let's say i have 20 users logged on my linux box. How can I know how much memory each of them is using?
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42 views

High memory usage on server after upgrading from MySQL to MariaDB

I recently upgraded from MySQL 5.5 to MariaDB 10.0. After upgrading, rebuilding Apache & PHP, I noticed that memory usage went up by around 200+ MB. I have a VPS of 2 GB available. Before the ...
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1answer
74 views

Azure memory overhead

Question: what is the effective overhead of Windows Azure? Problem: If memory is swapped out often, the application will come to a grinding halt. Renting a larger instance costs money. By knowing ...
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2answers
2k views

installing non-hp RAM in hp proliant ml310e G8

i bought the hp proliant ml310e G8 with 8GB of crucial RAM. but when i plug it in the system initialization hangs on 90%. i read in another post (HP ProLiant ML310e Gen8 early system initialization ...
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1answer
113 views

Tracking down a memory leak

I previously asked a question about a server that had a very high nonpaged pool memory utilization and someone explained how to use poolmon to track down the problem driver. I did this, but I'm not ...
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2answers
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Minimum requirements seem to much for a 32 bit application

I am a developer using high level languages like C++ and .NET. One of the external applications I support will be upgraded soon. I have received the following minimum requirements for the upgrade: ...