The tag has no wiki summary.

learn more… | top users | synonyms

1
vote
0answers
23 views

JVM process resident set size “equals” max heap size, not current heap size

After a few reading about jvm memory (here, here, here, others I forgot...), I am expecting the resident set size of my java process to be roughly equal to the current heap space capacity. That's not ...
0
votes
1answer
17 views

KVM - Changing Memory of Guests Live

I have a KVM guest that I would like to dynamically change the memory allocation of. At the moment, to change the memory of the guest, I have to run: sudo virsh edit $GUEST_DOMAIN Then change the ...
0
votes
0answers
20 views

Single TCP-CLOSE_WAIT connection brings down application till restart

Recently found a behaviour where my application had a connection in TCP Close_wait state till the app was restarted (after about 5 hours). But during this period the SUnreclaim space was also ...
1
vote
3answers
38 views

Debug unstable Apache server under Debian

Since yesterday my Apache server that runs on a Debian machine runs very unstable. Sometiems my websites load and sometimes not. I think it has to do with the memory since my Apache log is full of ...
0
votes
0answers
12 views

Memory monitoring with Win Server 2008 Performance Monitor

I'm trying to make report that uses Perfmon log files and all is great, but I'm little confused about Memory counters. I need two values: Total size of physical RAM installed on server (same value ...
1
vote
2answers
929 views

High memory utilization by sqlservr.exe process

Sub:High memory utilization by sqlservr.exe process. When I look into task manager -->processes or by using perfmon memory counters(Sqlserver:memory manager:Target server memory and Total server ...
1
vote
2answers
1k 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, ...
1
vote
2answers
724 views

understanding and improving sphinx searchd memory usage

My company has a few servers that we dedicate to running Sphinx Search. All are CentOS 5 with about 48GB of memory and our version of searchd is 1.11. Recently I've been trying to understand why ...
0
votes
1answer
47 views

Apache2 using up all my memory and stalling my wordpress instance (mysql)

Environment Ubuntu 12.04 / 1GB RAM / 40GB DISK / 1 CPU (RACKSPACE) Wordpress 3.9 mysql Ver 14.14 Distrib 5.5.38, for debian-linux-gnu (x86_64) using readline 6.2 Apache2 mod_php5 mod_rewrite When ...
0
votes
1answer
21 views

SSHFS mounts use too much memory

I have 21 SSHFS mounts from a Debian server to another one. The servers are on a 1Gbps LAN. When I mount these 21 FS, 675 MB of real memory (not buffer nor cache) are allocated on the server mounting ...
2
votes
2answers
1k views

Changing memory allocator to Jemalloc Centos 6

After reading this blog post about the impact of memory allocators like jemalloc on highly threaded applications, I wanted to test things on a larger scale on some of our cluster of servers. We run ...
0
votes
2answers
838 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 ...
0
votes
1answer
83 views

High memory usage windows 2008

I have a Windows server with 32 GB RAM, which is running sqlserver and tomcat. In resource monitor it show more than 95% memory usage, but when I searched in processes all process, each process is ...
1
vote
1answer
549 views

Perfmon takes up entire memory

Is it expected? Windows 2008 R2 Storage Server SP1, 6GB physical RAM, 18 GB Paging file Running 12 hours of Perfmon collection with low sample interval After some time, Commit charge reaches ...
0
votes
0answers
125 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
votes
0answers
52 views

What is using all of my memory on Ubuntu 12.04?

I keep getting alarms from Rackspace telling me that my memory usage is too high, but I can't seem to find the culprit. I ran top SHIFT + M to see top output sorted by memory, and this is what I get ...
0
votes
0answers
42 views

PowerEdge R210 Memory Upgrade

I have a Dell PowerEdge R210 II running with 2GB of memory. I wanted to upgrade the memory to 10GB as I am running ESXi on the machine. I purchased an ECC RAM (2 x 4GB) which allows me to get the RAM ...
0
votes
1answer
1k views

iexplorer.exe high CPU/RAM usage

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

spamass-milter and opendkim use tons of memory

I recently set up a mail server using postfix, dovecot, opendkim, spamassassin, and spamass-milter, and it works fine, but spamass-milter and opendkim are using lots of memory: Above: opendkim and ...
0
votes
0answers
47 views

Odd Suhosin memory alerts

I am getting a lot of odd suhosin alerts in my syslog. The following are example entries: Jun 9 08:46:11 suhosin[9764]: ALERT - script tried to increase memory_limit to 2145386496 bytes which is ...
0
votes
1answer
54 views

Server Memory with Magento

I have a cloud server with the following specifications: 2vCPUs 4G RAM 160GB Disk Space Network 400Mb/s System Image: Ubuntu 12.04 LTS I am only running Magento CE 1.7.0.2 on this server. Nothing ...
0
votes
1answer
100 views

check a vps guest memory usage and CPU usage

I have vps guests that are managed by KVM and libvirt. Using virt-df, I am able to check the real disk usage of each vps guest. #virt-df [--options] -d domname Is there a similar utility tool to ...
2
votes
1answer
91 views

Slow disks but lots of RAM - optimization tips?

I have a Windows Server 2012 with rather slow hard-drives BUT with a lot of RAM and I can't change that (it's an Amazon EC2 actually). What can I do to optimize performance? I have 16 GB of physical ...
1
vote
1answer
89 views

Apache 2.2 eventually using all memory (worker mpm)

I'm tuning up a Apache 2.2 server (it's shared with MySQL + Courier + Mongo + Postgre). The server is bare metal (no virtualizataion) with 2 quad-core Xeon (total 16 core) and 12GB ECC RAM (upgrading ...
24
votes
3answers
2k views

Why is Linux reporting “free” memory strangely?

This is a canonical question about how Unix operating systems report memory usage. Similar Questions: Server refuses to use swap partition Memory Usage in LINUX I have production ...
1
vote
1answer
145 views

PostgreSQL v9.3.4 memory usage Issue on Windows Server 2008 R2

I have DB of size ~16GB Windows Server 2008 R2 (up to date). We moved from Postgres v9.2.4 to Postgres v9.3.4 and now Postgres v9.3.4 memory usage is growing until is takes all the windows physical ...
5
votes
5answers
10k views

How can I monitor memory usage for a windows-based JVM and trigger an alert if it gets too high?

I have an app that runs as a JVM in Windows 2008. I'd like to monitor it's memory usage and be sent an email if/when memory usage reaches a specific threshold. Is there a free utility or method for ...
0
votes
1answer
227 views

PostgreSQL memory usage on Windows Server 2008 keeps growing

We're running PostgreSQL on Windows Server 2008 (on Amazon EC2), with about 40 databases. When we first launch Postgres, it doesn't use much memory, but over time, the memory usage of ONE of the ...
2
votes
0answers
34 views

how to determine who is using the slabs?

Is there any way to figure out who or what is allocating size-256 slabs, like in the slabtop output below? I had to reboot a server yesterday that had 5G out of 8G RAM in size-256 slabs and was ...
1
vote
0answers
24 views

Linux meminfo “Buffers” takes more than 10% total memory? [duplicate]

I noticed that meminfo - Buffers occupies significant amount of RAM on some servers in my work environment. I'd like to know what is exactly is "Buffers" and why it takes that much amount of RAM. ...
1
vote
0answers
55 views

Memory consumption of ASP.Net app

I'm migrating an existing ASP.Net (MVC3) application to a new server. The primary reason is to migrate to IIS 7.5/Windows 2008 while it's currently on IIS 6/Windows 2003. The new server has 8GB of ...
0
votes
1answer
85 views

memory maxed out, but top not showing processes using this memory

I have a server that has 2GB ram and is running on MediaTemple's DV managed server, which uses CentOS. The command free -m gives this following: total used free shared ...
1
vote
1answer
43 views

Tracking memory problems

I'm experiencing some trouble with my Windows Server 2008. We're using it for hosting a bunch (~50) of Web GIS applications on IIS. This setup usually works very well, but when certain applications ...
0
votes
2answers
478 views

Where is the high load coming from?

Last night I recieved a lot of messages from DirectAdmin saying: load average on your system is 46.86, or some similar number. It comes with a 'top' printout, but all I can tell from that printout is ...
0
votes
0answers
65 views

lsass.exe uses 2.4GB of memory when resolving a web page

I have a user who has been noticing slowdowns with his machine frequently. When investigating his system (Windows Server 2008 R2) processes, we saw that lsass.exe was using 2.4GB of memory. A reboot ...
1
vote
0answers
62 views

Monitoring and reporting on page faults to determine memory issues

I'm in the process of configuring a performance monitor(s) against all servers in my domain. I'm using WhatsUp Gold 16.2 to send an alert when we reach certain thresholds. I recently read an article ...
0
votes
0answers
32 views

Why would Memory\Available Bytes go down, even when Virtual Memory used is constant?

I have a long-running application that continually loops through video files. It runs for some hours, and then a message box appears along the lines of "The system is running low on memory...". I've ...
1
vote
2answers
52 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--- ...
0
votes
1answer
51 views

Varnish Hangs Every 1-3 Days After Websocket Implementation

After implementing a varnish -> nginx -> nodejs websocket pipeline (previously we had been using iptables to port forward), we started experiencing a freeze in varnish every 1-3 days. Checking some of ...
0
votes
1answer
48 views

How to determine what memory was freed

We have a somewhat complex LAMP stack running a variety of websites using Litespeed instead of Apache on Centos 5. Once everything is up and running, the memory usage of the system is fairly ...
1
vote
1answer
52 views

No buffers in memory. What it means?

This is a memory stats from my VPS (OpenVZ). $ free -m total used free shared buffers cached Mem: 800 405 394 0 0 405 -/+ ...
0
votes
0answers
34 views

Mysql large memory consumption

I have a server running under openvz. System is Debian 6.0, MySql server 5.5.31 installed from dotdeb.org repo. I have very strange problem. Mysql server settings not allow Mysql to get more than 1.7 ...
0
votes
1answer
995 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 ...
0
votes
1answer
75 views

High CPU usage in RHEL machine

I have RHEL machine that runs postgres-9.1 database. In a particular time, sar output shows as follows: Refer link for snapshot: http://imgur.com/gKcOhOX,vNwTpwC#0 where as %user is high between ...
1
vote
1answer
256 views

Mysql running out of memory

I am having a lot of trouble with mysql eating too much ram on a small machine and am looking for some help in figuring out why it is eating so much. I have a small virtual machine with 256MB of RAM ...
0
votes
1answer
679 views

limit memory usage of users on windows server 2008 r2

We have an IBM server in our research lab with Windows server 2008 R2 OS. Six users log in and use software like MATLAB or R and run their codes. When a bad program takes up too much RAM or CPU usage, ...
2
votes
2answers
244 views

Something eats all memory on my server, but it is NOT fs cache

I had several times received notifications from my monitoring system about 98% memory. I ran top and counted only around 60% memory used if I sum memory column. After several hours memory usage was ...
0
votes
1answer
122 views

When does Linux run out of memory? [duplicate]

I'm trying to establish why a process keeps unexpectedly stopping, and one possibility is that the server is running out of memory, but I'm not sure I understand memory and Linux properly. Take the ...
0
votes
2answers
213 views

Script to monitor specific processes' memory utilization

I have a client I do some remote server administration work for who recently started a 2-week trial period with New Relic. They have recently had some performance issues, and also asked me to take a ...
1
vote
1answer
269 views

FcgidMaxProcesses not respected

I'm using FastCGI (fcgi). I'm having a problem where more PHP processes are being spawned than what should be, which is eating up my RAM. I'm using WHM, and so have set the following PHP settings via ...