The amount of memory required by a program or the system for a specific task.

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2
votes
1answer
473 views

Avoiding swap on ElastiCache Redis

We have been having ongoing trouble with our ElastiCache Redis instance swapping. Amazon seems to have some crude internal monitoring in place which notices swap usage spikes and simply restarts the ...
2
votes
1answer
30 views

Creating large file ties up memory after process is done

I'm using an Ubuntu 14.04LTS server (AWS EC2) to do a custom database dump but I'm getting a very odd memory behavior. I'm using PHP CLI script to loop through the custom dump query that outputs to a ...
0
votes
3answers
1k views

MySQL Memory Limit Windows Server 2003

I am running MySQL 5.0.51a on Windows Server 2003 Standard Edition on an HP DL580 G4 with 3GB installed. One of my database tables has grown to 5.3 GB with an index file of 2.5 GB, which I believe is ...
2
votes
0answers
32 views

SQL Server without memory reservation completely hangs

We are currently experiencing failures on our SQL Server machines. It appears that once a server on the same (VMWare) host as our SQL Servers starts a maintenance procedure. The SQL Servers will ...
0
votes
1answer
30 views

Why is apache (httpd processes) using swap space?

Here is the output from top. I don't understand why the httpd processes are using swap space. top - 13:49:45 up 28 days, 2:11, 4 users, load average: 1.31, 1.32, 1.20 Tasks: 262 total, 1 ...
1
vote
1answer
31 views

Estimate RAM necessary for a process on Linux

I am a user of a Linux-based computing cluster that runs a task queuing system PBSPro. PBSPro likes to know how much RAM should be available for a task to make sure it will execute correctly; for ...
0
votes
2answers
2k views

What does Zabbix message “Free disk space is less than XX% on volume Shared memory” mean?

I use Zabbix to monitor my environment. The Zabbix server warns me with the following message: "Free disk space is less than 20% on volume Shared memory" Can someone explain "volume Shared memory" ...
0
votes
0answers
10 views

Linux “free” command gives different answer than AWS Memory Metric [duplicate]

When I run a "free -om" on our Linux server (hosted on Amazon), the total available is 7,483 MB and the used is 7,125 MB for a 95% usage. But the Amazon MemoryUtilization statistic shows 73%. Why the ...
0
votes
0answers
34 views

My wordpress/MYSQL is consumming way too much memory, how do i act on it?

I have a Ubuntu server running apache + mysql + PHP +postgres + passenger Mysql is often crashing, putting wordpress out of service. I asked the question here : Wordpress + PHP+ apache +mysql, mysql ...
0
votes
0answers
24 views

What's the Suitable Azure Tier Plan For This Web App Usage And Reads [duplicate]

I have an azure web app Used for web API (restful) purpose. I use Azure as the cloud for this mission. i want to know that what is the suitable plan tier to choose with this Usage as following: I ...
-2
votes
2answers
55 views

Java process stay in running state and consume CPU

I have a jar running in background on a Ubuntu server. In a certain moment, the application start consumming too much CPU (400%) and 4 child process stay in R state: N.B: the problem is ...
0
votes
1answer
16 views

Monit is reporting low memory use

Monit is reporting very low memory use that is not consistent with actual use. If I look at Monit, under System I see "5.7% [918.0 MB]" though the real scenario is very different; total ...
0
votes
1answer
49 views

RabbitMQ memory consumed by Erlang writers, and nothing is paged to disk

I have a case where the total memory used by RabbitMQ is 6.2 GB, and 6.1 GB of which are utilized by Erlang writers. However, I can not find this size paged anywhere on the hard disk. what happens if ...
0
votes
1answer
23 views

Jira/Confluence hogging memory with lots of processes

We've been working with Jira and Confluence on a Debian 6 VPS for a while now. Everything is fine as far as their daily use is concerned. The issue we are encountering now is that occasionally, the ...
0
votes
0answers
30 views

IIS Websites running out of memory

I have a server that is hosted by the parent company as of recently. This server is running two websites. One is a memory hog, the other is much smaller in scale. We had a situation today where the ...
1
vote
2answers
87 views

Will Linux/Ubuntu running in an LXC container understand cgroup memory limits?

I'm planning to rent a physical server and run MySQL inside an LXC container on that server. I'd like to control maximum memory usage for the MySQL instance using cgroup limits : ...
2
votes
1answer
48 views

Linux: process memory accounted to cached amount

I have very strange case of memory usage on our ubuntu server. One process (which is searchd from sphinxsearch) allocated almost all available memory, and its VSize, RSS and SHR are almost equal ...
0
votes
0answers
141 views

Cannot allocate memory problems - update-notifier-common

I'm running a Ubuntu 14.04.3 server on a Digitalocean droplet with 1GB RAM. I'm getting weird memory allocation errors, even though I have plenty of memory available. I started noticing this from the ...
-1
votes
1answer
38 views

Predict: fork: Cannot allocate memory

Using many bash parallel processes: process1 & ... process30 & Doing multiple git operations within each process randomly will produce: fork: Cannot allocate memory The system is CentOS ...
0
votes
1answer
39 views

Stop numproc exceeding the limit

We are running magento on VPS, which is facing a Numproc issue. According to our hosting provider, our server is exceeding the limit of numproc "400" & memory usage is also high. Because of this ...
11
votes
3answers
38k views

Something eats all memory (I suspect memory leak on some app). How to detect what?

I have server which runs liquidsoap+icecast bundle and simple website (httpd+mysqld). Nothing special. Visitors around 2000+ per day, with around 50 being online simultaneously on average. Server has ...
1
vote
1answer
97 views

Monitor java application memory inside Cloud Foundry

I have a Java application that I'm deploying inside a Cloud Foundry environment. I want to monitor the application's memory usage. Cloud Foundry provides the cf app command that produces output ...
1
vote
0answers
72 views

Nagios check_jstat

I'm trying to monitor java memory usage using nagios nrpe features. So I download and install check_jstat and install the plugin on the remote server. And when I ran it below is the result: OK: jstat ...
1
vote
1answer
16 views

Linux top in RES what does the 't' suffix stand for

When monitoring my system with top, I noticed that under RES some values have a 't' suffix, but I can't see any indication of what this means. PID USER PR NI VIRT RES SHR S %CPU ...
1
vote
4answers
2k views

Reducing apache VIRT and RES memory usage

On a quad-core server with 8GB of ram I have apache processes that use up to 2.3GB RES memory and 2.6GB VIRT memory. Here is a copy of the top -c command: Is there a way to reduct the memory usage ...
0
votes
1answer
29 views

Azure App Service Memory Use Diagnostics

Our ASP.NET website hosted on Azure as an App Service is experience periodic huge memory spikes. In the portal I will see it hover around 1GB all day then spike up to 5GB over the course of an hour or ...
0
votes
1answer
96 views

high memory usage on amazon linux

I've observed high memory usage at amazon ec2 instance using amazon Linux. See attached image. Top 25 processes shows < 1GB of memory, but free -m says ~ 3GB is consumed. I've already visited ...
-3
votes
1answer
49 views

How can I close httpd open conncetion? [closed]

I have a lot of open connection of httpd and ram usage, how can i solve this?
0
votes
1answer
61 views

centos vps memory is too full

my ram is almost full without any process using it. maybe you think it's a duplicate question but unlike others my -/+ buffers/cache is used too. this is output of related commands: top - 00:27:38 ...
0
votes
1answer
35 views

MySql ignores memory settings

I'm using MySql community server 5.6 on Ubuntu 15.04, I have /etc/mysql/my.cnf (no other config files). I've made changes to it and restarted MySql. When I use such query SELECT @@key_buffer_size ...
0
votes
1answer
30 views

Is MySQL using up all the memory? [duplicate]

I need help with reading this output of free -m. This server has a total of 32 GB of ram but it shows 9383 used and 290 free. The rest seems to be in the buff/cache. I am running mysql on this server ...
0
votes
0answers
66 views

Unable to start VM with more than 1388MB of memory in Hyper-V

I have a question regarding Hyper-V on Windows Server 2008 R2 (Standard). After installing and configuring Hyper-V via adding a role in the server manager, i am able to start VM only if they have ...
3
votes
3answers
367 views

CentOS 7.1 - Reverting to Old Functionality of top and service

I recently installed a fresh CentOS 7.1 server. I'm noticing a few differences from CentOS 6.7, and I'm hoping there is a way to revert to an old view of certain things. For example: Question 1: ...
1
vote
0answers
43 views

XEN VPS wrong memory?

I ordered a VPS on XEN platform with 1 GB of memory. CentOS 6.6 uname -a Linux vps 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux I checked the ...
2
votes
1answer
4k views

iexplorer.exe high CPU/RAM usage

My client has a virtual Server 2008 R2 terminal server running under ESXi 5.1. This server, which been in production for around 4 months, experiences intermittent slowness / non-responsiveness for ...
1
vote
0answers
41 views

Physical memory runs out after sql changes

We have an 2008 r2 server working for 5 years, its physical memory was always around 70% but after our last site code and SQL stored procedures and functions updates it got to 94-96% and all the pages ...
0
votes
3answers
186 views

Idle AWS EC2 but high memory usage

I'm using Amazon EC2 instance C4.large, total 3.75G memory, running Amazon-Linux-2015-09-HVM The memory usage increases day by day, like there's a memory leak. Then I kill all my program and all ...
-2
votes
1answer
47 views

How can I reduce the Cache usage of MySQL and raise the free memory?

I currently have a virtual server with 12 GB of RAM and 8 CPU running many websites with Apache and MySQL. When looking in PhpMyAdmin monitor, I see the following resource usage graph: image -> ...
1
vote
1answer
55 views

tuneup application memory management

I have couple of systems 75% the memory used for buffer and the rest by applicaion. I have a monitoring tool alert me for high memory usage be cause the system used 90% aavailable memory, based on my ...
1
vote
1answer
271 views

Are Application Pools Generally Larger In IIS 8.5 vs IIS 7.5?

We recently moved our websites from IIS 7.5 to IIS 8.5. We did not change any of the code in the websites The app pools are identical in configuration We are running ~70 sites on this ...
2
votes
4answers
12k views

Cannot start machine in Hyper-V - “Not Enough Memory in the system to start the virtual machine”

I have a Window 8.1 host trying to start a virtual machine through Hyper-V. The VM is configure to use 10GB of RAM, I have 16GB, it should start but it doesn't. Instead I get the message '{VM ...
5
votes
1answer
387 views

Hyper-V dynamic memory not correctly assigning more memory

So, I got an alert from our monitoring system that there's less than 15% memory free on a virtual machine. I log in to investigate, it turns out that the VM in question is a Hyper-V VM with Dynamic ...
2
votes
0answers
130 views

How does docker stats output relate to top output?

I've got a process running in a Docker container on Linux, with a 2GByte memory limit. (The container is started with docker run --memory=2g.) Here is what top says about it after it's been running ...
2
votes
1answer
161 views

Missing memory on ESXI 6.0

I have an ESXI 6.0 with 8GB Ram. For some reason I can only use 4.7GB for VMs. I tried using esxtop but didnt see anything using lots of RAM. Below are screenshots from vsphere. Can anyone help me to ...
4
votes
1answer
3k views

Reduce Gitlab memory footprint

I'm currently running both a Gitlab instance (v6.7.3) and a Ghost-powered personal blog on a DigitalOcean VPS with 512mb (lowest end), served by nginx. Until just recently I was unable to run both, ...
-1
votes
3answers
630 views

Does killing proccess means free used memory?

I have the service, that each second run external exe programs (for example process1.exe) and kill's them. Taskmgr - show only one process. After running service i get minimal free memory ...
1
vote
1answer
162 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 ...
2
votes
0answers
15 views

What is the value shown for memory graph in XenCenter?

I would like to ask question to people in this community about Xen Center. I use Xen 6.5 in production environment. However, I quite don't understand the value shown in memory graph of "Performance" ...
14
votes
6answers
51k views

Weird memory usage in Windows Server 2008 R2

I hope someone can help. We've got a Windows Server 2008 R2 machine with 16GB of RAM that keeps getting all its available memory eaten by something. Nothing in Task Manager or Resource Monitor reveals ...
2
votes
1answer
265 views

Nginx: Optimal map_hash_max_size and map_hash_bucket_size for 1M map?

I have 1M static rewrite rules and using this map configuration. How to determine the optimal values for map_hash_max_size and map_hash_bucket_size? I want to optimize for memory consumption. The ...