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

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Server crashing daily at 3:40am

I have a cloud server with rackspace. It is CentOS release 5.10 (Final). 40GB storage, 1gb ram, 2gb swap. I am running the kloxo control panel to manage the virtual hosts. Every day it eats up all ...
1
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0answers
26 views

Adding normal graph on memory usage per process to Zabbix

I need to monitor memory usage per process of processes on Linux. My monitoring tool is Zabbix. I found some links which describe how we can do it on windows. As an example I can refer to Host ...
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0answers
43 views

High CPU usage - How to track the process or ip causing it? [closed]

i am having issues with CPU high utilization, more than 92% . Is there anyway to track which plugin or process or user is causing this issue? I am using word press in windows Will usage of any ...
3
votes
1answer
1k 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, ...
0
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2answers
69 views

SQL Server 2008 R2 does not utilize allocated memory

Our app runs on a server with 4 core CPU, 8GB RAM and Sql Server 2008 R2 Standard Edition (10.50.1600.1), 64 bit. Server dedicated to Sql Server, no other heavy service is running. We've set min/max ...
14
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5answers
1k views

How often do you restart a heavily-utilized Windows Server 2008R2 Remote Desktop Server (VM)?

Note: I've read How Often Do Windows Servers Need to be Restarted? but this question pertains to our Remote Desktop server specifically. We have a Windows Server 2008R2 server - a VMware ESX VM - ...
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votes
2answers
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 ...
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0answers
9 views

Cisco process memory usage

I am trying to monitor a Cisco process memory usage. This is what I get with the command line: show system internal processes memory | inc PID|ipfib PID TTY STAT TIME MAJFLT TRS RSS ...
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0answers
26 views

Apache randomly crashing

so apparently apache has been intermittently crashing overnight and the apache error log has shown nothing that is suspicious. I would have to reboot my server each time to get apache running again. ...
1
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1answer
58 views

CentOS Qemu+KVM lot of virtual machine processes

I am on host-machine with Centos 6.5, qemu+KVM and 2 virtual hosts in it (behind NAT). Both virtual hosts were configured with Virtual Machine Manager (one of them is with Windows 2003 and other with ...
13
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11answers
16k views

How to monitor and log the memory/cpu usage of processes over time? [closed]

I am looking for a way to diagnose issues, such as swap death, where a balooning memory process fills up swap and kills the whole machine (such as apache). I'm already using cacti and I can set up ...
0
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1answer
33 views

Apache Causing High Load

I'm having an issue with Apache 2.2.15 (CentOS 6.x x64) causing high memory load, to the point of consume 100% of an 8GB swap, and load averages >125. The VM is an Azure A2 VM (2 vCPU, 3.5GB RAM). ...
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2answers
653 views

Avoid a crash when a process allocates too much memory?

Similar to this question, we have a computing server with 96GB of RAM that is used to run large jobs in parallel. Occasionally, the total amount of physical RAM is exceeded, which causes the server ...
0
votes
1answer
44 views

How to take memory dump when IIS Applicationpool recycles

Applicationpools in our production environment randomly recycle because it reached its private bytes memory limit (Event id 5117). The private memory limit is set to 1.6 gigabytes. From time to ...
2
votes
2answers
591 views

XenServer 6.2 VM 100% CPU and 100% memory usage and won't boot

I had this problem today after a power failure. I had 2 vms and one of them won't boot and was using 100% of CPU and 100% of memory. Since it was very dificult to solve (at least for me) I want to ...
0
votes
2answers
49 views

When should I consider to add more RAM to VPS instead of CPU? [closed]

I have a VPS hosting a Wordpress site. When the traffic is too high, I usually see the CPUs are very busy and fully occupied. Therefore, I always try to add more CPU cores to the VPS. For example, 4 ...
3
votes
2answers
1k views

mysql becomes unresponsive at same time every day

My server goes down every day at same time. I found that the issue was due to mysql. I tried show processlist; and found that data base was entering in to sleep mode. I saw there was so many inserts ...
0
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0answers
30 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 ...
0
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0answers
14 views

htop / top in centos - identifying anonymous processes

Running HTOP on my webserver - I can see lots of anonymous processes. Obviously I can't track down what these are without knowing what is causing these. Any ideas on how I can track down what these ...
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votes
2answers
191 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
votes
0answers
15 views

How to show per-process amount of non-swappable memory?

I am using a VPS which has, unfortunately, stringent limits on maximum total size of non-swappable memory for all processes in the container; this limit is called in kmemsize in OpenVZ. I would like ...
-2
votes
1answer
46 views

“-/+ buffers/cache memory” used is always 0KB

I have an OpenVZ VPS with Ubuntu server 14.04.2 and I can access to a SolusVM control panel. Recently, "memory usage" is always 0 KB, and only "vswap usage" shows real swap usage. if I run free -k i ...
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0answers
40 views

linux system slab cache proc_node_cache usage too large

My system run java program only, at some time the memory usage increase very quickly to a very hight percentage: memory usage of java : PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ ...
3
votes
2answers
2k views

Ever increasing mem usage by php-fpm?

It seems php-fpm is allocating more and more memory, although peaks and dips in amount of requests. Couldn't post more than one image, so I put them here. As you can see in the uri of the pictures, ...
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1answer
43 views

mysql hot add memory

Is it possible for currently running jobs in MySQL to utilize memory that's been hot added? It looks like when memory is hot added to the VM the currently running jobs are not utilizing the additional ...
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2answers
59 views

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--- ...
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0answers
70 views

Do I need more memory for my CentOS server?

When checking my server's memory usage with free -m I'm getting this result: total used free shared buffers cached Mem: 1024 1024 0 ...
0
votes
0answers
39 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 ...
1
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4answers
222 views

Is there any tool that I can use to monitor memory usage of each process on Linux easily? [closed]

This issue is not the same as the question on how to see the memory usage of a Linux process. Also, the top command doesn't give the exact memory used, but just what percentage one process uses, so ...
0
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3answers
2k views

Smallest footprint OS [closed]

Many FreeBSD users tell me that FreeBSD has the smallest footprint in terms of CPU & RAM usage. I'm looking for a server OS with the smallest possible CPU & RAM usage, so I will try FreeBSD ...
0
votes
1answer
126 views

How to calculate amount of memory being used for processing an array

I have an array of 6 million database records. Each record has 100 columns. Is there a formula to calculate the amount of memory that is being utilized by the server? Will this be exponential? The ...
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0answers
20 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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0answers
126 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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0answers
19 views

org.apache.tomcat.util.net.JIoEndpoint takes more memory

org.apache.tomcat.util.net.JIoEndpoint takes more memory as per new relic Thread profiler. The memory utilization never reduced even in idle time. It seems there is a memory leak in this class. Could ...
0
votes
1answer
117 views

Why is my java process using much more heap space than specified?

I'm running a Java application on Solaris using the -Xmx256M switch. When I connect via JMX, the JVM tells me the application is using about 50Mb of heap, and correctly states the maximum heap size is ...
3
votes
2answers
141 views

How to limit Apache sub-process memory usage?

— Yeah, just that simple question. It's too easy to consume a lot of RAM in brain-dead mod_XxX (say, mod_php) application, so I'm just wondering what does Apache allow to do as countermeasure.
2
votes
2answers
77 views

What's the technique to find out bottleneck?

I setup a wordpress on Digital Ocean for the smallest droplet for a few months. Recently, my blog gone viral (1000+ facebook shares) and the server take 50+ seconds to respond.(Google Analytics show ...
13
votes
2answers
12k views

Effects of configuring vm.overcommit_memory

My VPS web server running on CentOS 5.4 (Linux kernel 2.6.16.33-xenU) irregularly (like once a month give or take a few weeks) becomes unresponsive due to oom-killer kicking in. Monitoring of the ...
1
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0answers
136 views

Apache 2.4 prefork, MySQL 5.6 and 2GB RAM

I think I'm having problem setting up Apache24 correctly. Apache seems to taking up to much RAM, and I'm not sure how to configure it. The FreeBSD server is using 50% of it's swap space. We are ...
0
votes
1answer
447 views

Details on the utility `memhog` in Linux environment?

I'm working on reviewing memory usage on an EC2 instance running the Amazon kernel and ran across the utility /usr/bin/memhog but it has no manpage. Before blindly running, I was wondering what it ...
-1
votes
1answer
38 views

Linux server memory usage and cache availability [closed]

It's a topic already discussed, but there's a point that i'm not really sure about. I want to see whether my server memory is well dimensioned (os is centos 6). I run the processus that will be ...
1
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0answers
162 views

Setting the MemoryLimit of a user-created systemd scope using cgroups as user

Related: LImiting overall memory usage for child processes Is there a way for an unprivileged user, or for root to allow an unprivileged user, to create a systemd scope (or other control group ...
1
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1answer
61 views

Memory Utilization Best Practices

I'm running several Linux-based VMs (vApps, actually) that have varying amounts of memory assigned to them. Some have databases, some web servers, etc. While some are using less than 40% of their ...
16
votes
2answers
4k views

Where did my RAM go?

Note: before you jump in too fast, yes I read linuxatemyram.com! I have a server with 64GB RAM. free -m says that my RAM is full, and it's not because of disk caching: total used ...
0
votes
1answer
64 views

Apache process growing despite limiting MaxRequestsPerChild

Server Version: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips DAV/2 mod_bwlimited/1.4 PHP/5.4.27 mod_perl/2.0.6 Perl/v5.8.8 CENTOS 6.6 PHP handler - DSO The server is running with prefork ...
0
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0answers
76 views

squid reverse proxy using too much memory

I have a bunch of small vps set up for http caching in a bunch of edge locations using squid as a reverse proxy (varnish caused more issues and had worse performance). These vps have 1gb of ram and ...
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votes
3answers
349 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
0answers
113 views

Difference between ps_mem.py & free -m . Ubuntu server kills processes

Previously, I had a 4GB RAM server with Linode. Several times, I did "free -m" command to check available memory. I asked question here as well, but realized its more appropriate here. Most of the ...
2
votes
2answers
580 views

What does monit consider to be memory usage?

Once can have monit monitor memory usage… check system foo if memory usage > 95% then alert Does it use free RAM, or free -/+ buffers/cache? (or something else?) # free -m total ...
3
votes
1answer
2k views

Monitoring SQL Server 2008

I understand SQL Server doesn't release the memory unless the OS needs it. Then, monitoring Available Bytes (free memory) is not the best way to monitor the service. What other variables can give me a ...