The memory tag has no wiki summary.
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Dell T410 Memory Upgrade - mixing sizes
We have a Dell T410 server using 4x2GB RDIMMs for a total of 8GB.
I thought I would be able to replace 2 of those 2GB RDIMMs with 2x4GB RDIMMs to increase our total RAM from 8GB to 12GB.
However, I ...
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How to see what is causing failcnt on tcpsndbuf
I am seeing a failcnt on my tcpsndbuf by looking at the user beancounters. How am I able to see what is causing this failcnt?
I am experiencing problems with my server and I think that it is as a ...
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47 views
Strange Inode/Ram cache drops happening in CentOS
I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup.
This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed.
...
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1answer
59 views
Apache memory consumption
I am currently having very severe problems with my Linux CentOS dedicated server. For some peculiar reason, all of my memory is being consumed by apache and resultantly, my qmail process is crashing.
...
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1answer
47 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 ...
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Kill or revive a process based on system memory usage
Consider a system with limited memory, like a smallish VPS. Suppose there are a handful of processes that need to stay alive, and one process "P" that would be nice to have around, but is not ...
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1answer
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How does computer hardware ensure that user programs cannot overwrite memory used by the operating system? [closed]
I just took an online quiz for my Operating Systems class. I got this question wrong, can you please give the right answer and why? I answered A. Also, if this needs to be migrated to a different SE ...
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2answers
39 views
Dedicated memory for Xen dom0?
How to assing the dedicated memory for the xen host system dom0 permamently and how to preventing dom0 memory ballooning ? also what is the minimum memory need for the xen host dom0 when it as already ...
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1answer
48 views
Is this a memory failure being logged (CentOS web server)
$ sudo tail /var/log/messages
Jan 30 13:47:58 www kernel: EDAC MC0: CE row 3, channel 0, label "": Corrected error (Socket=0 channel=1 dimm=1)
Jan 30 13:47:58 www kernel: EDAC MC0: CE row 3, channel ...
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1answer
45 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 ...
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Linux Server eating all my memory [closed]
Possible Duplicate:
Linux Server eating all my memory
I run all of my websites on a 512MB dedicated virtual server, which up until now has served me very well.
On 10 Jan, for some unknown ...
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2answers
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Any reason why memory usage would be higher after migration to a new server?
I migrated my website to a new server recently.
The server administrator mentioned that the website uses a large amount of memory.
I didn't have FTP access at the time, so on my test server version ...
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116 views
Unexplained cache RAM drops on Linux machine
I run a CentOS 5.7 64 machine with 24gb ram and running kernel 2.6.18-274.12.1.el5.
This machine runs only Nginx, php-fpm and Xcache as extra applications.
Since about 3 weeks my memory behavior on ...
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51 views
tomcat 7 config for a small Grails app
I have a Grails app deployed on tomcat7.0.23 on a 64-bit vm, and it keeps running out of mem.
The app is a plain is it can be:
Grails version: 2.0.0
Groovy version: 1.8.4
JVM version: 1.6.0_29
...
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2answers
47 views
Rationale for maximum memory size
I recently purchased a Dell N5110. It's described as having a maximum memory of 2x4Gb. What is the reason for the maximum module size of 4Gb?
Is it impossible to manufacture DDR PC3-10600 with more ...
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48 views
How do I fix this ESPSER~1.EXE application error?
This error comes up very regularly on the computer at my workplace. This machine is running Windows XP, and the error message says:
The instruction at "0x00000000" referenced memory at ...
2
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2answers
126 views
Memory usages in Linux drops frequently
I run a CentOS 5.6 (64bit) machine that has Nginx (latest version) running, with php-fpm (latest version). Things run very well, but since about 2 weeks I noticed in my Munin graphs that about every 2 ...
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3answers
39 views
Available Memory Slots DL380G5
I have an HP ProLiant DL380 Generation 5 in a remote data center. Is there any way that I can check remotely how many memory slots are occupied (and more importantly how many are available)? The ...
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How can I tell if my mac needs more memory? [migrated]
In windows xp it was obvious: if the memory used regularly exceeded the physical memory, it was time to put some more in
What's the deal with the mac?
I read this and am none the wiser
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InnoDB table vs MEMORY table for a mysql environment with many inserts [migrated]
I run my sites all on InnoDB tables which is working really well so far. Now I like to know what is going on in real-time on my sites, so I store each pageview (page, referrer, IP, hostname, etc) in ...
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How much memory is required for base lamp setup?
I am planning on renting a VPS.
How much memory is required for a base setup of Debian, Apache, Mysql, PHP?
By base, I mean not considering traffic (which will be below 1k hits a day). No ...
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dmidecode --type memory showing wrong DDR type? [migrated]
A few weeks ago I decided to upgrade my laptop memory. In order to determine which type I need I used the following command on my Linux box (Ubuntu 10.04, not inside VM):
sudo dmidecode --type memory
...
0
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1answer
31 views
VDS Memory Optimization
I am new one for rent a server. I choose a CentOS VDS width 2G memory. After apache+mysql+php install and setting, My server cost 750MB and 1297MB free (I use free -m to see it)
And then I run one ...
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1answer
42 views
webmin memory usage seems wrong
I'll be looking through the list of Running Processes in webmin, and it seems like the memory usage for my applications is wrong.
For instance,
mysql 253956 kB /usr/sbin/mysqld
Which would ...
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24 views
Reserve RAM for cache and buffer [migrated]
I usually run many programs and virtual machines on my desktop. The CPU isn't the bottleneck but the memory. (Buying more memory isn't a solution because it's not my own computer.)
I started ...
3
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1answer
105 views
Memory DIMM slot install order
Building my first server and have a small question that I'm unsure of!
We've purchased an X3650 M3 server, with 2 processors and 8 DIMMS of memory.
Now I am unsure of the memory installation for 2 ...
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1answer
54 views
How to fix RVM exhausting Virtual Memory on VPS?
I'm trying to install ruby via RVM on an Ubuntu VPS with only 512 MB memory.
When running rvm install 1.9.3 I get the error:
ERROR: Error running 'make ', please read ...
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0answers
71 views
What are the risks of running a database on a server without ECC RAM? [closed]
A lot of branded servers come with ECC RAM, but it is expensive.
For a database server or other critical servers, what would be the impact of not using ECC RAM?
Data corruption? (I suppose the ...
0
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2answers
96 views
MySQL consuming nearly all memory in cache?
I am running a server with 24G of RAM. The only thing running here is a MySQL server configured as Master.
When I check the memory via free -m I am getting this:
total used ...
2
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3answers
157 views
Monitoring memory usage on Linux system
We use WhatsUp Gold to monitor all of our web servers. On our Linux servers (and much to the same degree, our FreeBSD servers) I'm having a little bit of an issue with the memory monitors. We're using ...
0
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1answer
96 views
“nice” for memory management
Before the question I give you a bit of background : I am running a website on a VPS. The VPS itselmf runs the apache web server, the PHP code that produce the pages with acvces to a SQLite DB, and ...
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3answers
91 views
More memory consumption from 32-bit to 64-bit?
When moving from a 32-bit to a 64-bit server, will apps take more memory on 64-bit machines because of the increased dataspace?
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96 views
Upgrade memory incompatibility with HP PROLIANT DL160 G6
We have a HP PROLIANT DL160 G6 as a development server. Recently we decided to upgrade the memory and but this one. So we finish with 2 modules of 2GB that came with the server and the new module of 4 ...
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3answers
107 views
What consumes memory in java process?
we are trying to investigate memory usage of java process under moderate load.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12663 test 20 0 8378m 6.0g 4492 S 43 8.4 ...
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How do I know memory access time in clock cycles?
I have both windows and linux environment,
how do I know memory access time in clock cycles?
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1answer
96 views
Memory missing? Centos 6 x64
after upgrading a server from centos 4 to centos 6, only 8 out of 12 Gb are available to the system; I thought some were faulty but it's not the case (i tried to swith memory with another server)
I ...
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2answers
76 views
linux/centos crashing periodically
Excuse me if I'm not doing something right on the site it's my first time here (have used stackoverflow before).
I have a centos 5.2 server running Plesk and the tech support guys are refusing to look ...
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2answers
109 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 ...
0
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1answer
34 views
Apache uses more memory than PHP's memory_limit
I am having some issues on a server where multiple Apache processes are being spawned and eating up the physical memory and swap.
Each httpd process consumes around 130MB of RES. However, PHP's ...
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3answers
70 views
Will I need more system resources to run DB2 instead of MySQL?
I need to convert my web application from MySQL to run on DB2. I need to know in advance whether I will need a high spec server to ensure the web application performs at the same speed as it does now ...
3
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1answer
68 views
How does my jre exceed its heap limits?
I have a jvm whose actual memory use is well in excess of the limits with which it's being launched. It's a Sun VM:
root@jira:/opt/atlassian/jira/jre# ./bin/java -version
java version "1.6.0_26"
...
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2answers
105 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 ...
0
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1answer
44 views
xen domUs crashes or unavailability
I've xen server with 8 domU.
Server is Xeon E31270 with 16gb ram. I think it is enough for 8 machines.
Sometimes domU's crashes and i can't figure out the reason.
After crash i can connect to console ...
0
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1answer
16 views
IIS6 shows out of memory error - Error show is the same URL repeated many times in event log
I have an HTTPS ASPX based web site that is generating out of memory errors under load. The errors seem to coincide with what shows in the event log as a series of the same URL repeated many times ...
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1answer
39 views
MS SQL Hardware Configuration
About to order a replacement mirrored database pair to drive our multi-user web applications and looking for some guidance on some aspects. I have read various feedback on other posts but finding it ...
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2answers
54 views
Apache, httpd process 4MB+ memory use, Wordpress, Dedicated Server
What is happening to apache? I cannot trace down the processes doing this to my server. I can't anymore, the server is crashing every day a few times. Don't know what to do anymore, tried all the ...
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Large Buffer Pool Size in Memory and the page out issues in Sql Server 2005
When using Sql Server 2K5,I find that the process "SqlServer.exe" sometimes occupy high memory usage and suddenly drop to a low value by monitoring the "Windows Task Manager".
And the "Buffer Pool" ...
0
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1answer
96 views
Exchange - Memory Pages per Second Bursting
I just started monitoring an Exchange server (SBS 2003) using Zabbix yesterday, and during the night I received several alerts for the Memory Pages per Second indicator acting bursty and jerky:
...
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3answers
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What hardware & software consideration does a major website require to properly manage 1000+ servers? [closed]
Sorry for such a high level question. I understand the basics of server load balancing, but the concept of managing 30,000 servers is a bit foreign to me. Is it really just the same concept of ...
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2answers
90 views
CentOS only detecting 50% of ram
I have 16GB ram in my machine. Before, free -m outputted the normal 16 GB ram, however now (after a reboot) it only detects 8 GB ram. Is one ram module damaged?
grep -i memory /var/log/dmesg outputs
...
