Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.

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How to avoid Memory “Hard Fault/sec”

i've a problem on my windows 2008 server x64, and i cannot understand how can i solve it. i'm looking to Resource Monitor and see about 100 to 200 hard faults/sec. and generally the machine is slow. ...
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2answers
2k views

Windows Server 2012 vs Windows Server 2008 on 1gb of ram [closed]

I will be purchasing a vps soon and I there are two possible operating system that I can use, Windows Server 2012 Standard and Windows Server 2008. The vps will only have 1gb of ram. Memory wise what ...
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1answer
142 views

idle proccesses and high memory bad? uwsgi/django

I have a VPS with 256MB of ram. I'm running nginx, uwsgi and postgresql on Ubuntu 12.04 for a soon to be Django site. About 200MB of ram are being used despite the website not being active, the uwsgi ...
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1answer
316 views

Varnish memory management

I have a rather 'dumb' question regarding Varnish. I've been reading info on Varnish cache storage types and yet don't understand what would happen in following: Imagine we have 2GB of free memory. ...
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7answers
2k views

Is it necessary to burn-in RAM for server-class hardware?

Considering the fact that many server-class systems are equipped with ECC RAM, is it necessary or useful to burn-in the memory DIMMs prior to their deployment? I've encountered an environment where ...
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1answer
2k views

How can the Private Bytes of a process be significantly less than its effect on the system commit charge?

On a 64-bit Windows Server 2003, I can see using taskmgr or process explorer that the total commit charge is around 3.5GB, yet when I sum the Private Bytes consumed by each process (by running pslist ...
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1answer
125 views

How much memory should I allocate for host OS when virtualizing [duplicate]

I would like to buy a dedicated server and virtualize it. Details: Host OS Ubuntu 12.04 server OS Setting up 3 VMs. 2 serving web applicaitons with php/Mysql + nginx and 1 running bugzilla. With ...
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1answer
483 views

Can anyone identify this eMMC card socket? [closed]

It's not mSATA or PCI-e mini card. Any ideas what socket this eMMC fits into?
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2answers
2k views

Major issues with fsck of 10TB ext3 RAID 6 (memory allocation failed, etc.)

I recently added a 7th 2TB drive to a linux md software RAID 6 setup. After md finished reshaping the array from 6 to 7 drives (from 8 to 10TB), I was still able to mount the file system without ...
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2answers
2k views

How to read memory usage in htop?

It's my htop output: For example, I'm confused by this ruby script: How many physical memory is it using? 3+1+8+51+51? 51? 51+51?
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1answer
34 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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0answers
2k 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 ...
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1answer
241 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 ...
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1answer
126 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 ...
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3answers
202 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 ...
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2answers
137 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 ...
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2answers
114 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 ...
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1answer
170 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 ...
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1answer
205 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 ...
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1answer
203 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 ...
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2answers
75 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: ...
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3answers
766 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) ...
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1answer
1k 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 ...
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1answer
701 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 ...
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0answers
57 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. ...
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1answer
156 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 ...
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3answers
429 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 ...
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2answers
414 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 ...
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1answer
83 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: ...
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2answers
2k 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 ...
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1answer
2k 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 ...
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844 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. ...
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82 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 ...
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1answer
570 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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3answers
1k 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 ...
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1answer
196 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 ...
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1answer
831 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 ...
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3answers
97 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 ...
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2answers
69 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 ...
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0answers
127 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. ...
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4answers
559 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 ...
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0answers
143 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 ...
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4answers
5k 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 ...
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1answer
45 views

Proliant server ML 370 G4 RAM upgraade

can we use ECC non-registered RAM 667MHz on HP Proliant ML 370 G4?
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1answer
148 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 ...
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1answer
72 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 ...
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3answers
8k 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 ...
4
votes
1answer
882 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 ...
4
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1answer
862 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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1answer
541 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 ...