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

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6
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1answer
93 views

Baffling Memory leak. What is using ~10GB of memory on this system?

After running for about 18 hours, this system is using ~10GB of memory, causing the OOM-killer to be triggered when we run our usual tasks: # free -h total used free ...
1
vote
1answer
829 views

Hyper-v dynamic memory client machines always use maximum memory

When I create a virtual machine in Hyper-V and set it up to use dynamic memory, the virtual machine will always use the maximum memory within the virtualized OS. Hyper-V will show the assigned memory ...
0
votes
0answers
21 views

Can high memory usage cause network shares to be inaccessible?

I have a 2008 R2 server that has the File Print & IIS server roles. The memory usage is at around 80% constant due to an antivirus software I have installed (Windows Defender). On two occasions ...
-2
votes
2answers
10 views

memory usage per user in SGE cluster

I would like to automate the estimation of monthly memory usage of all jobs performed by a given user in my cluster (SGE, ubuntu). I have seen there are many tools to compute the current memory usage ...
1
vote
4answers
3k views

free shows more memory used than top process total

UPDATE: This was being caused due to a known issue with nss-softkn. See this article: https://www.splyt.com/blog/2014-05-16-optimizing-aws-nss-softoken When I run free -m from my centos 6.5 box I ...
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 ...
-1
votes
2answers
30 views

How can I handle heavy Database interaction at peak hours? [duplicate]

We run an application more like competition organizing websites like HackerEarth.com, HackerRank.com. When the tasks start, we see huge load on our server. The problem is, we need to interact with ...
0
votes
0answers
57 views

Keycloak dies every few days for high memory usage

I have a Keycloak in a VPS running as SSO for the rest of the architecture. But every few days, without apparently any reason, in a single spike Keycloak uses all its available memory and enters in a ...
1
vote
0answers
42 views

RabbitMQ crash: Cannot allocate memory when enough is free

The problem: My RabbitMQ service crashes with Slogan: eheap_alloc: Cannot allocate 1581921408 bytes of memory (of type "heap", thread 1). despite the fact, that free -m reports more than 4GB ...
0
votes
2answers
37 views

Analyze memory and cpu peaks of docker container

I want to analyze the maximum memory (RAM + swap) usage and the maximum cpu utilization of a single docker container. I know that one can use docker stats and /sys/fs/cgroup/memory/docker//memory....
4
votes
2answers
6k views

What does `Kbytes RSS Dirty` mean for pmap?

output of pmap: Address Kbytes RSS Dirty Mode Mapping 00000000006b4000 60 16 16 rw--- [ anon ] What's it saying ?
9
votes
3answers
8k views

Is it possible to list the files that are cached?

Here the output of free -m: total used free shared buffers cached Mem: 7188 6894 294 0 249 5945 -/+ buffers/cache: ...
1
vote
1answer
31 views

Why doesn't memory consumed by balloon driver not show up in top?

On an overallocated ESX host, guest is allocated 80GB RAM. The balloon driver kicked in at some point, and is consuming quite a bit of memory. # vmware-toolbox-cmd stat balloon 52381 MB Now guest-...
0
votes
0answers
12 views

accurately determining memory usage [duplicate]

I am not a sysadmin, so please bear with me. We have a CentOS machine with 500G of memory. We run MySQL and a few other things on it, and we want to try and maximize the OS buffers which will improve ...
2
votes
1answer
598 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
33 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 ...
2
votes
0answers
33 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
45 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 running,...
1
vote
1answer
37 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
11 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
39 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
30 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
81 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
21 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
108 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
36 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
31 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
161 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 : lxc.cgroup.memory....
2
votes
1answer
53 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
210 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
57 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
41k 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
181 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
89 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
41 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
105 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
59 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
92 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
47 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
33 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
75 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
399 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
55 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
241 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 ...