Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.
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0answers
13 views
What happends to my ram [migrated]
i am trying to understand the basics of linux os.
Running a 64 bit Ubuntu 12.04 on 64 bit CPU.
has 2GB ram
cat /proc/meminfo
MemTotal: 2012040 kB
Question1 Where is the missing 85112kb ...
2
votes
3answers
111 views
Server crashes Sundays at 6 a.m. - out of memory
I have a weird problem: Every Sunday at 6 am my LAMP server crashes.
Looking at the logs I see about 500 apache2 processes at the time (this is a test server without any load - especially not at 6 am)
...
0
votes
1answer
26 views
Running “top” memory seems high? [duplicate]
I'm not a Ubuntu expert, but I've just ran top on a Ubuntu server box and Terminal has highlighted the results in red, it looks pretty high to me.
Is this right? I'm only really running Apache and ...
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votes
1answer
56 views
How to protect against in-RAM attacks
Since hosting providers are constantly under attack from hackers, encryption of the entire file system (the entire server) with tools like www.truecrypt.org seems like an absolute must to me, if you ...
0
votes
0answers
24 views
Apache httpd process using too much memory
I am running a dedicated apache web server on CentOS6 it has:
12GB memory
4 cpus
My httpd config is as follows, from /etc/httpd/conf/httpd.conf
Timeout 60
KeepAlive Off
MaxKeepAliveRequests 100
...
0
votes
1answer
48 views
How to install different RAM modules
I have different RAM modules - 2Rx8 and 2Rx4 . How can I install all of them in one server?
Tried putting all 2Rx8 in one Branch and 2Rx4 in another, but it didn't work.
Branch0 | Branch1
...
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 ...
0
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0answers
17 views
Linux not using available memory for buffers/cache [duplicate]
We recently deployed a few HP ProLiant DL380 G7 servers running RHEL 5.9 with 128GB RAM.
I am accustomed to seeing the kernel take most of the memory and use it for buffers/cache.
The output of ...
0
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2answers
48 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
3answers
168 views
I put 4 gigs of RAM into a new server, why does it say I have only 3462960k RAM?
I put 4 gigs of RAM into a server, but when I look at the command line why does it say I have only 3462960k RAM?
[root@localhost ~]# cat /proc/meminfo
MemTotal: 3462960 kB
[root@localhost ...
0
votes
2answers
37 views
Upgraded SQL server, performance plummets
Seeking help with a new SQL server.
A client of mine was running an aging SBS 2003 server (Xeon 3060, 4 gig of RAM) and a line of business application with a 25 gig SQL Database using SQL Server ...
0
votes
1answer
34 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 ...
7
votes
3answers
1k views
Memory is free, but still swapping?
I'm sure this is a pretty basic question, but I'm just trying to get a grasp of what's going on with my Ubuntu Hardy server running a Rails-based site. It seems that I have free memory available, yet ...
1
vote
1answer
156 views
What could increase the consumed server memory amount when just upgrade the RAM?
Is there any reason that could cause more memory consumption on a windows server 2008 when upgrade the RAM from 2 to 3 or 4 GB?
I have noticed that the server used memory was about 1.5 to 1.8 GB when ...
0
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0answers
37 views
What limits instalable RAM on laptops and PCs? [closed]
It seems that DDR sticks come in 8, 16, 32 sizes.
If I buy a CompanyX laptop and the sales agent tells me that each slot only allows, 8Gb memory, can I expect that it a real limitation. Can't I ...
1
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2answers
41 views
How to see what is cached in memory in SQL server 2008?
Is there a way how to find out what is cached in SQL Server 2008 R2? I have found the following nice article here:
...
21
votes
9answers
18k views
How to reduce memory usage on a Unix webserver
I'm currently using a Joyent Accelerator to host my webapps, and it's working fine, however I need to reduce costs so I'm downgrading my current plan and that imposes some new memory limits (256M rss, ...
4
votes
1answer
1k views
Windows Web Server 2008 R2 Max RAM 16 GB?
This is page: http://msdn.microsoft.com/en-us/library/aa366778%28v=vs.85%29.aspx
I see: Windows Web Server 2008 R2
Limit on X64: 32 GB
In my system display, I see: Only 16 GB are usable. Any ideas?
...
0
votes
0answers
27 views
SvcHost using too much RAM
I have a problem. A specific instance of SvcHost is using way too much ram (680MB). I've found that the following services are running under this process:
I've stopped and then started all services ...
3
votes
2answers
1k views
What is Memory Operating Mode?
I have been given an x64 windows 2003 server, on which I have installed M$ Virtual server 2005 R2. I then created an image that is running Server 2008 R2. It was running very slowly so i did a bit of ...
0
votes
1answer
29 views
Over committing memory failing with out reaching half of actual RAM
I am running centos 6.4 with 2.6.32-358.6.2.el6.x86_64 which is actually running as a xen vm
with
ram 2 GB
On this i have set
cat /proc/sys/vm/overcommit_memory
2
But when i try to start my ...
5
votes
2answers
3k views
Loads of memory in “standby” on Windows Server 2008 R2
In our SharePoint farm, our Web Front End servers all have loads of memory in "standby" mode, meaning very little is available for our IIS worker process.
We have 32 GB of RAM in each of the boxes, ...
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votes
0answers
44 views
Hot-swapping DIMMs on a consumer motherboard [closed]
Has anyone ever tried replacing a DIMM on a consumer motherboard (one not specifically designed for hot-plugging memory) while it's powered up? How big is the chance this will fry the memory module ...
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0answers
30 views
Dell Poweredge 1800 - RAM problems
I have a Dell PowerEdge 1800 running on Windows Server 2003. It had 2x256mb RAM cards in it. I need to get it to atleast 4gb of RAM total. I made sure to buy 2x2gb certified cards that were compatible ...
0
votes
1answer
88 views
Linux buffer memory always stays at zero
One of my hosted server is a Xen guest running Debian and linux kernel 2.6.32. It has been running fine for quite some time (more than a year) but I recently noticed something weird. For a few ...
4
votes
1answer
289 views
1GB VPS - Apache Worker MPM - FCGID - Max concurrent connections - RAM CAP
I have spent a week or two researching and setting up my server to run Apache with the Worker MPM and FCID. I am trying to optimize it to allow for the most concurrent connections possible. It has ...
0
votes
0answers
27 views
RAM Disk software (many of them) have slow speed with small files [closed]
We need to find a good RAM disk software for using it with MS Analysis Services Multidimensional (to put some cubes with recent data - 2-3 month, and to speed up the data retrieval with MDX queries). ...
1
vote
1answer
90 views
Error with MySQL server: Can't create a new thread (errno 11)
I am currently stress testing my PHP, MySQL application hosted on AWS EC2 using Amazon Linux. After reaching certain number of users DB starts to give error: Can't create a new thread (errno 11); if ...
12
votes
4answers
5k views
Windows Server 2008 R2 Metafile RAM Usage
I have a server which runs Windows Server 2008 R2 x64 with 4GB of RAM which hosts around 2-3 million files, the majority of which are image files.
Over a course of a week, I have noticed that ...
0
votes
0answers
44 views
CentOS 6.4 on Hyper-V memory exhausting issue
I am having an issue where the RAM on the virtualised machine is becoming exhausted after periods of time, the machine itself has 4GB RAM assigned to it and it always seems to be reporting around 15% ...
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votes
0answers
25 views
MySQL server with InnoDB is a memory hog
We have a high transactional volume MySQL server on an Amazon EC2 large server. In the past, it would run for maybe seven to ten days before eating up all the available RAM and crashing the server. ...
1
vote
1answer
2k views
High CPU usage of flush process
I know that flush process is garbage collector of kernel, but in my case on two servers that process is really CPU intesive. In most of time it uses 80-100% of CPU.
2898 root 20 0 0 0 ...
1
vote
1answer
55 views
Mysql crashing due to InnoDB not able to allocate memory
MySQL crashes every now and then due to, I believe, a large request hitting it above the innodb-buffer-pool-size set in my.cnf (currently at 210M), which I needed to set for mysql to start in the ...
2
votes
1answer
1k views
What performance counter is used to display total RAM usage on a Windows 2008 server?
I'm trying to use the Performance Counters so I can log the total RAM usage on a particular machine. I've got a sneaky feeling that it's maxing out (due to some bad code) ... server has a heart attack ...
0
votes
1answer
78 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 ...
1
vote
2answers
890 views
Glassfish V3 using up all available memory
I have a Virtual Server with 1GB of RAM. When i start glassfish with asadmin start-domain it instantly allocates all available memory, although i defined -Xmx128m in my domain.xml. Am I missing an ...
2
votes
0answers
29 views
Sun Fire V40z, big gap between memory reported by dmidecode and what the Linux kernel sees
I'm looking after a V40z (a loaner), running RHEL 4.8 (no, I can't update it, it's a loaner) that according to dmidecode has 8 DIMMs of 2048M each, which makes for 16GB RAM as far as I'm concerned.
...
2
votes
1answer
113 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 ...
1
vote
3answers
104 views
ESXi running 2 x Windows 2012 setup advice
After much deliberating and advice I'm intending to use an element of virtualisation for deploying some new servers.
The original (physical) plan was one server running as domain controller, SQL ...
4
votes
5answers
1k views
Prevent Linux's OOM from killing apache on our webserver
We have a debian linux webserver. It's just running apache2. Our mysql server is on another host. However we sometimes run cron tasks on the webserver to do regular tasks.
However recently one of the ...
6
votes
2answers
1k views
100% CPU load on Ubuntu 10.04.3 LTS 64bit
I have trying to fix this issue for two days with no success.
The server is a MySQL database server.
Hardware:
DELL Poweredge 1950, 2x Intel Xeon Quad Core E5345 @ 2.33GHz, 16 Gb mem, 2x 146Gb SAS ...
14
votes
4answers
9k views
How can I determine the cause of an apparent memory leak in my Apache/PHP based web app?
About once a week, but sometimes even a couple of times a day after running fine for days, my EC2 instances become unresponsive. Munin's memory graphs tell a pretty straightforward story: memory ...
2
votes
1answer
38 views
e2fsck - out of memory despite [scratch_files] set in /etc/e2fsck.conf
I'd like to repair an ext2 file system on an external 16GB SD card drive.
When I issue the following command:
e2fsck -y /dev/xxx
my system runs out of memory (Fedora 17 x64 8GB RAM, 8GB Swap).
As ...
2
votes
3answers
2k views
How do I monitor CPU and Memory usage with Nagios?
Is there a plugin that does that? If yes, how do I set it up?
I have Nagios on a single server setup (nagios monitoring the box where it's hosted), so I don't need any fancy way of getting that info ...
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votes
1answer
66 views
Why is a 32bit OS limited to 4 GigaBytes of RAM? [closed]
What I don't understand is where the 4 GigaBytes comes from.
Most of the articles I read say that 2^32bits = 4 GigaBytes, but this doesn't seem correct given that 8 bits = 1 byte.
For a 32 bit OS:
...
3
votes
2answers
175 views
Why does my ESXi report higher memory usage than I expect?
I have a pair of ESXi (5.1) hosts in a High Availability cluster. Each host has 48GB of RAM. I currently have 18 VMs running, with the following configured memory amounts:
1x 4GB, 1 vCPU
1x 4GB, 4 ...
11
votes
7answers
3k views
SQL Server - Force DB in memory?
We have a beefy Windows 2008 x64 server (4 x 4 core CPU, 32GB RAM) running SQL Server 2005 64-bit. We have a small (6GB) but very important database that is somewhat slow to access until the pages are ...
0
votes
1answer
199 views
What does this VMWare warning really mean? … “… Insufficient video RAM…”
Here is the actual warning from VMotiononing:
Warning message from xxxx-esxi16.xxxxx.xxxxx.xxxxx.edu: Insufficient video RAM. The maximum resolution of the virtual machine will be limited to ...
1
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1answer
70 views
How to determine php memory usage on apache?
Sorry if I didn't phrase my question correctly.
I use the php function "memory_get_usage()" to see the amount memory allocated to PHP on a script I am running.
On server A I get around 2 MB. ...
0
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0answers
63 views
How do I test the integrity of a mini-DIMM memory module?
I have one Mini-DIMM memory-module which I would like to test using MemTest86+.
While I'm aware that some RAID controllers and network equipment use DDR2/DDR3 memory packaged on mini-DIMM form-factor ...
