Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.
2
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0answers
24 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.
...
0
votes
1answer
63 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
3answers
84 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 ...
-1
votes
0answers
17 views
An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full - wamp server [closed]
I am creating a browser-based game using PHP,Javascript and HTML5 and I am testing it on a local wamp server. However sometimes I get the following error:
Warning: mysqli::mysqli(): (HY000/2002): An ...
2
votes
1answer
32 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 ...
-5
votes
1answer
59 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
109 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 ...
0
votes
1answer
74 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
vote
1answer
28 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
votes
0answers
60 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 ...
-3
votes
1answer
105 views
DELL Server won't accept Corsair RAM
I've ordered DELL PowerEdge™ T110 II with 2GB RAM and
Corsair 16GB 1600MHz CL10 DDR3 Vengeance Memory Kit(2 X 8GB). By some reason the server works only with the original memory and won't accept the ...
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votes
0answers
33 views
what is the best place to buy good quality, good price RAM? [closed]
what is the best place to buy good quality, good price RAM?
i've been ordering ram from crucial for years, but have grown frustrated with their stale ux and terrible order tracking tools.
i've tried ...
2
votes
3answers
60 views
Xen memory management on small server
I am currently running VMware vSphere 5 on a server I use for various projects. Mainly I use it for honing my skills with administration and running a few game servers.
Recently I was considering a ...
-2
votes
0answers
23 views
Dell PowerEdge 1850 Fan Speed [closed]
I am looking for some way to adjust the fan speed of my home server. Currently they are extraordinarily loud.
There are no issues with temperature (highest the temp gets is around 60) and the fans ...
2
votes
1answer
100 views
Centos 6.4 install only showing 160G of 192G installed ram, dmesg shows all 16x16G sticks
Any ideas why? Same sever with ubuntu 12.04 shows 192G properly.
With centos 6.4 (64 bit):
with Ubuntu 12.04 (64 bit):
I put the mem=193447M in the kernel section of /boot/grub/grub.conf to no ...
0
votes
1answer
29 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
31 views
Server Memory Usage [duplicate]
So I appear to be having some problems with VPS memory and wondered if someone could point me in the right direction.
If I go in to Server Status, it constantly shows me as using 85% memory.
Current ...
0
votes
0answers
37 views
how do dual processors handle 4 dimms
I'm looking at using dual Xeon E5-2620s on a server build. They support quad channel memory. If I have 4 dimms, will the two processors see it collectively as quad rank, or each processor see a dual ...
3
votes
3answers
73 views
Virtual Server Memory not a power/multiple of 2
In the old times (before virtualization), memory came in powers/multiples of 2, because that is the way memory is manufactured. Nowadays that we create virtual servers that don't have real physical ...
1
vote
2answers
43 views
Can my mysql server be fully tweaked? [closed]
I'm on a quadcore CENTOS 5.9 i686 standard running WHM 11.36.0. It's a dedicated LAMP server with lots of websites, most of which are using databases. I'm monitoring the server using Munin and notice ...
0
votes
0answers
42 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. ...
-2
votes
4answers
160 views
will a 100GB database with large tables on MSSQL 2008 server run on a 3GB RAM system? [duplicate]
This will be only for testing and developing.
I have a 100 GB DB I am working on and need a sanbox envorinment.
The only hardware I have is a desktop with 3GB and 32bit.
I am able to install SQL 2008 ...
-1
votes
1answer
58 views
Nginx solution for caching external images?
I have a little forum with 100 users online and i'm looking into a solution for caching all external images from avatars, signatures etc. to ram. Now for my static content i'm ussing memcached to ...
0
votes
0answers
33 views
Apache 2.2 - mod_php - memory usage
I have a memory problem with my servers where is installed Apache httpd 2.2, mod_php and APC.
How to know exactly how much memory is shared by all httpd children and how much is allocated by each ...
0
votes
0answers
21 views
Understanding Xen debug.log
Running xen 3.4.2 running with 15 vm (pv+hvm) on a host with 256 Gb RAM and 96 core CPU.
But recently my host crashed on debug log its showing
translating ffff83183fcb0000 with CR3 100ae42000 and 4 ...
0
votes
0answers
42 views
MySQL VM running out of RAM [duplicate]
we recently had a problem where our mysql vm was running out of RAM and choking to a stop. Last week we upgraded it from 2GB to 8GB and it was running great until yesterday is started happening again. ...
0
votes
0answers
34 views
Solaris memory allocation
I have solaris system that installed 12 GB RAM. All running process consume about %65 memory. I start to application that tshark (wireshark command line alternative). Tshark complete parse a ...
3
votes
3answers
176 views
Slow Memcached: Average 10ms memcached `get`
We're using Newrelic to measure our Python/Django application performance. Newrelic is reporting that across our system "Memcached" is taking an average of 12ms to respond to commands.
Drilling down ...
-1
votes
1answer
23 views
Proliant server ML 370 G4 RAM upgraade
can we use ECC non-registered RAM 667MHz on HP Proliant ML 370 G4?
-1
votes
1answer
48 views
Choosing linux server for mysql - memory clock speed [duplicate]
I have a Linux Mysql server cluster where master and slaves are overloaded by a combination of read/write i/o and by SELECT queries load.
We purchased FusionIO cards to replace the hard drives. My ...
0
votes
1answer
26 views
Xen domU sees 35MB less than assigned
I am using ubuntu precise 12.04 and I am booting a paravirtualized ubuntu 12.04 domU, all being 64 bits. The VM has memory=1024 assigned and xentop at the host correctly shows 1024MB, but htop in the ...
1
vote
3answers
177 views
CentOS 6: strange page allocation failure messages [duplicate]
I set up a new Server with CentOS 6.4 final as successor for an old mysql server and I'm facing some problems with it. From time to time mysql connections are being disconnected. Furthermore the ...
3
votes
1answer
235 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 ...
2
votes
1answer
105 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 ...
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votes
1answer
65 views
Apache: how to use more RAM? [closed]
Conf.: Gentoo 2006 64b; Apache 2.2; Myqsl 5.0; PHP 5.2; 5.5 Go of RAM available
Nothing's crashing but the website installed is slow. The number of requests/second is low too, around 7/s.
How to use ...
0
votes
1answer
94 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
...
-1
votes
1answer
21 views
how to map virtual memory to physical memory [closed]
Is there a way to map virtual memory to physical memory. I need to be able to do this in order to write a memory diagnostic program. The linux version is 2.6.36.4
0
votes
2answers
97 views
Oracle 10g on RHEL - All memory gets eaten up nightly at 20.15
Okay, to start things off, I'm brand new to Oracle DB. Much experience with Microsoft products (boo) and Ubuntu linux, but RHEL and Oracle are very new to me.
The environment ... Oracle DB 10g ...
1
vote
1answer
91 views
About huge page and translation Lookaside Buffer
they confuse me.
huge page: the way to manage physical memory of OS kernel, it is split huge page by kernel for reduce the index number in page table.
I get it from :
...
1
vote
0answers
25 views
Track memory usage of a job on SGE
I'm looking for some guidance in how to precisely figure out how much RAM my job is using on my cluster. My job is not multi-threaded and runs on a single cpu.
When I run my job and run "top" I can ...
3
votes
2answers
109 views
Do we have a memory leaking application?
I am not sure how to interpret the memory usage of our servers on which WebSphere MQ (WMQ) is running. The main question is: Is WMQ using more and more memory over time (is it leaking memory) or is ...
3
votes
1answer
247 views
Linux Kernel (/proc/meminfo) Not Reporting All Memory
I have two machines that are identical in every way (hardware, distribution, application workload, /proc/sys/vm settings, etc), except for the the kernel version. One is 2.6.33 and the other is 3.1.0. ...
2
votes
2answers
172 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
1answer
126 views
Make PHP use more RAM than CPU on my server [closed]
By running TOP command on Ubuntu, i always see that PHP5 is using between 60% and 80% of the CPU but it stay low on Memory.
i got 1.5GB of RAM on my VPS and i know i'm not using more than the half.
...
4
votes
1answer
112 views
Cent OS: How do I turn off or reduce memory overcommitment, and is it safe to do it?
From time to time "my" server stalls because it runs out of both memory and swap space. (it keeps responding to ping but nothing more than that, not even ssh).
I'm told linux does memory ...
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votes
1answer
109 views
Get full physical Ram memory with bash
I know some of you might find my question stupid but i need to know how much ram is installed on a centos box
Yes i know it can easily be done by using the command
awk '/MemTotal/{print $2}' ...
0
votes
0answers
31 views
Why would sysbench return 0 ops/sec for a memory test?
I signed up for digitalocean and created an ubuntu instance, and like I do with all webhosting I try out, I ran a few sysbenches to get an idea of how powerful their machines are (which is a trick I ...
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votes
3answers
74 views
htdocs in RAM disk?
I was wondering the other day why wouldn't one place all the htdocs related files in a RAM disk.
It seems to me, that this would greatly improve the time it takes for the disk to lookup and read ...
0
votes
2answers
84 views
PowerEdge 2800 RAM Upgrade FAIL
I have been trying to upgrade the RAM on my Dell PowerEdge 2800 unsuccessfully, likely because I do not know enough about RAM.
The RAM I got a hold of is labeled 2GB 2RX4 PC2-5300P-555-12-xx. When ...
0
votes
1answer
139 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 ...
