1
vote
0answers
18 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
20 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
1answer
30 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 ...
1
vote
1answer
43 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 -/+ ...
1
vote
1answer
81 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
69 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 ...
1
vote
2answers
48 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
44 views

Exchange store.exe memory spiking bewteen midnight and 6AM

I have a windows server 2003 R2 64bits SP2 with Exchange Server 2007 installed. The server has 12GB of ram and during the night, always between 12PM and 6AM, the memory usage spikes to 100% with ...
1
vote
1answer
52 views

Understanding Memory Usage and Numbers in Linux

I have a web server running Apache that has some interesting numbers for memory usage. Looking at top I have the following memory information Mem: 11679976k total, 10917568k used, 762408k free, ...
1
vote
1answer
101 views

How do I configure Linux to use less memory for caching?

I have a follow up question to 377448, but not enough rep to comment there. Before I get dinged for asking the same dumb question, let me say I've been reading a lot of similar posts and answers ...
1
vote
3answers
193 views

slow website load and high memory usage

my site has been slowed down last couple of days ... some image doesn't show up ... i got 408 Request Time-out: Server timeout waiting for the HTTP request from the client couple of times which ...
0
votes
1answer
129 views

Apache thread MEMORY Usage

I am facing an issue over the site i am working on, even in very low load of around 10-20 page views per second, the CPU usage maxes out, with all cores running at 100% plus the apache thread memory ...
0
votes
1answer
29 views

When using alias in NGiNX is the content of the file called loaded on the RAM?

When I load a static file via alias does it load the whole file into the RAM and then sends it to the user or is it stream directly to the user? I am wandering because I have a server with 250MB of ...
0
votes
1answer
110 views

Apache process races away (process size explosion)

I come here because I have searched and tried different optimization without finding any answers. We have a server with four websites hosted. The frequentation is not very high (we are sure that the ...
3
votes
1answer
461 views

Very high memory usage, but not claimed by any process?

While stress-testing LVM on one of our Debian servers, I came across this issue where memory would fill up a lot to the point where it would run the server out of memory, but no process would claim ...
0
votes
2answers
99 views

How to determine if you need to upgrade memory?

My CentOS server's munin graph shows high swap, but the amount of apps memory seems low. Does this still mean I need to upgrade my memory? What is causing all that swap? Is it because of the ...
0
votes
1answer
119 views

Linux not freeing the file buffer when we execute rm or > (redirection) operator

I have one router which has embedded-linux with kernel version 2.4.22 running on it. I know its very old version but i have to deal with it. Please take a look at the free command output when i run it ...
0
votes
1answer
166 views

Sar: Free memory statistics (including buffers, cache)

The free commands gives the amount of free memory in two forms: completely free memory (the Mem line) and disposable memory used for caches and buffers (the -/+ buffers/cache line): -bash-3.2$ free ...
0
votes
0answers
84 views

Postgres using only 500 MB of RAM of the available 4 GB

We recently moved to running postgres server on it's own VM and tracked the memory usage of the VM. Here is what I found: That the postgres is only using 500 MB of the available memory on the VM. ...
4
votes
1answer
312 views

Very high RAM buffers usage following instance resize/reboot

Yesterday afternoon, we resized one of our Linode instances (CentOS 5.7, 64-bit) from a 4GB instance to 12GB. Immediately following that reboot, I noticed that memory usage for buffers was insanely ...
0
votes
1answer
270 views

Increase kmemsize size of non-swappable kernel memory

I'm getting an error about not enough resources on a VPS running CentOS The exact error has to do with non-swappable memory. Here are the stats Current Use 29.35 Soft Limit 30 Hard Limit 33 Units MB ...
2
votes
2answers
597 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 ...
1
vote
1answer
624 views

How to find out who used all RAM (UPDATED)?

Sometimes I find that 100% of my small Debian machine's RAM is used, but I can't figure out how to find this leak: top show that all memory is used, but I can't find any process that consumed this ...
-1
votes
2answers
52 views

Memory pegged by unknown process [duplicate]

I have some strange output from the top command on my web server. Output is ordered by %MEM: top - 13:57:43 up 13 days, 21:58, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 118 total, 1 running, ...
0
votes
1answer
171 views

How to know which application is consuming the ram?

I have the following process list and memory consumption (reported thru process explorer) on a 2008 R2 server with SQL, TFS and some other tools: As you can see the system is consuming 3.6 Gb but ...
1
vote
1answer
208 views

cacti graph memory usage on server

yesterday for the first time I have installed into my server cacti to view the performance of the memory of my server because sometimes go down. I have make an image of the memory usage graph. Can ...
0
votes
1answer
365 views

Sum of memory of few processes in top is greater than 100%

I'm trying to calculate the amount of memory used by AMP in an LAMP stack machine. top -bn1 | grep -E '(mysql|httpd|php)' | awk '{mem += $(NF-2)} END {print mem}' But the sum generated using the ...
1
vote
2answers
240 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 ...
2
votes
4answers
3k views

Minimal Windows 2008 or 2012 memory usage

What are the minimal memory usage for Windows 2008 & 2012 server editions? I'm referring to all things OS-related. The machine would be a VM with a dedicated web server software, that wouldn't ...
0
votes
3answers
1k views

Linux Top shows 99% Memory in Use - Is it normal? [duplicate]

Possible Duplicate: Linux high memory usage (top total mismatch) High Memory Usage on Linux Server CentOS 5.7 dedicated server. No memory intensive processes running. 12GB RAM installed. ...
1
vote
1answer
271 views

How to globally limit memory usage of git

I have a Virtual Private Server where all my products' git repositories are. The problem is that while I fetch from it, the VPS dies out of memory. So I have to limit the memory usage. I know how to ...
2
votes
1answer
1k views

Too many apache processes?

I'm wondering why my server has so many free apache slots open. The server only has a couple of busy and idle slots. Please look at the attached images for the amount of process used by the server ...
0
votes
1answer
375 views

Munin and odd server memory usage [closed]

I've been analyzing my munin graphs and found that my server's memory usage is quite high. Question: Is my server memory usage too high? If it is should I: get a larger EC2 instance with more ...
4
votes
2answers
2k views

Apache “httpd” process, utilizing all my servers memory

My small ec2 instance with 1.7 GB memory, running the Amazon AMI based off of CentOS, has an issue with Apache utilizing way too much memory than it should. If you take a look at the screenshot, the ...
-3
votes
2answers
310 views

How much RAM a server needs?

I am going to develop a simple system of Perl CGI scripts which do email sending, file storage, and simple HTML user interface. The data should be stored in a MySQL database, HTTP is served with ...
5
votes
5answers
2k views

Free / Cached / Available memory on Linux

I have read that linux uses free memory for caching, to make system faster. However, both Nagios and Paessler PRTG monitoring system show me that my memory usage is critical. I could change Nagios ...
0
votes
1answer
139 views

IIS 6 Ram Allocation on Windows Server 2003

I have my IIS 6 running my website. It is on a Windows Server 2003 which has 4GB of RAM. I run SQL intensive code after the user submits a form (math statistics stuff). This process is not threaded ...
1
vote
2answers
234 views

dhclient requests filling memory?

Dammit Jim, I'm a web developer, not a sys admin. With that out of the way, my client's has a CentOS server (6.2) that is only serving a single Magento site (and the associated MySQL server) and it ...
-5
votes
2answers
196 views

How do I configure Linux to use less memory for IO caching?

I'm running a Dell R310 with CentOS 5.8 x64 and all it's running is apache, svn, and postfix. It's using 99% of the RAM for caching but i'd like it to use a little less like maybe somewhere in the ...
2
votes
1answer
1k views

How to free PHP-FPM memory?

There are several discussions complaining high memory usage of PHP-FPM, without any practical approach to overcome. As I explored the problem with numerous tests, the problem is related to the age of ...
4
votes
2answers
8k views

Used memory on Solaris 10

One more question about memory on Solaris 10. A top shows me that I have 672 MB free memory : 130 processes: 126 sleeping, 2 zombie, 2 on cpu CPU states: 95.1% idle, 3.9% user, 1.0% kernel, 0.0% ...
4
votes
2answers
695 views

Windows 2008 R2 Server using 100% RAM, can't find the problematic process

OK so I have a W2008 R2 server running a single website with about 100-200 visitors daily, and it also has MSSQL 2008 running on it for the same website. Recently, when the server starts it uses a ...
0
votes
1answer
544 views

memory difference on top and htop

I got a new VPS as my database server. I installed only mysql and started. After some time(even after shutting down mysql service), I see only %3-4 of the memory used in htop but according to top I ...
1
vote
1answer
525 views

How much memory can I lock before the system starts swapping/thrashing?

I'm trying to use Memtester as a memory stress and correctness test for my organization's Linux boxes. Memtester basically just takes in an amount of memory to test as an argument, locks that much ...
0
votes
1answer
57 views

Is there a way to get an email when system starts using swap space for memory?

I have a server that recently got knocked offline when when a blog article hosted on the box made the front page of Hacker News. From what I've heard, it seems like the server became unresponsive when ...
5
votes
1answer
5k views

Meaning of Cached Available and Free Memory in Task Manager's Performance “Physical Memory” section?

I want to see how much of the RAM is being used by my system. When I go to Task Manager -> Performance and look under "Physical Memory (MB)" section, it lists 4 terms which are:- Total Cached ...
0
votes
1answer
134 views

Recommended approach to limiting memory use on webserver

I have a Windows Server 2008 webserver with two web applications and two windows services. It is essential that the server never uses more than 2 GB of memory and the server can have no pagefile. What ...
4
votes
2answers
335 views

Simultaneously high swap and unused memory on Ubuntu server

I have an Ubuntu 10.04 web server in the cloud, with 1 GB of RAM. Here's a memory chart from Munin: but I'm having trouble making sense of it: on the one hand, unused memory is very high; but swap ...
2
votes
2answers
1k views

Ubuntu server using too much memory

my server is at a very high memory usage constantly - to the point that it won't let me log in via ssh some times. I have to reboot the server before I can log in and when it's restarted the memory ...
2
votes
3answers
193 views

free -m output, should I be concerend about this servers low memory? [duplicate]

Possible Duplicate: How to understand the memory usage and load average in linux server This is the output of free -m on a production database (MySQL with machine. 83MB looks pretty bad, ...