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

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833 views

APT FATAL -> Failed to fork

I saw a lot of questions regarding this, but mine seems a little different. Here's what I receive: /etc/cron.weekly/apt-xapian-index: FATAL -> Failed to fork. run-parts: ...
-1
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3answers
56 views

free shows more memory used than top process total

UPDATE: This was being caused due to a known issue with nss-softkn. See this article: https://www.splyt.com/blog/2014-05-16-optimizing-aws-nss-softoken When I run free -m from my centos 6.5 box I ...
0
votes
1answer
31 views

PHP Script causing server to run out of RAM and wont release

Ive been running a very resource hungry script the past 2 days. I manually trigger the call and it lasts for about 30 minutes then stops. Last night the script stalled when ram hit 100%. I restarted ...
0
votes
1answer
38 views

How much RAM will Apache web server use if 10 users download a 100 MB file simultaneously? [on hold]

I'm planning to buy a dedicated server from 1and1.com. There are many configurations on their site. Which one should I go for if I run the LAMP stack on CentOS and host files which users can download? ...
1
vote
1answer
880 views

Maximum amount of memory per session with IIS/.NET

I'm troubleshooting some memory issues we're running into with a heavily used ASP.NET site hosted on IIS6. Intermittently we have to manually recycle our application pool (process) to resolve issues ...
0
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0answers
8 views

Difference between ps_mem.py & free -m . Ubuntu server kills processes

Previously, I had a 4GB RAM server with Linode. Several times, I did "free -m" command to check available memory. I asked question here as well, but realized its more appropriate here. Most of the ...
2
votes
2answers
537 views

What does monit consider to be memory usage?

Once can have monit monitor memory usage… check system foo if memory usage > 95% then alert Does it use free RAM, or free -/+ buffers/cache? (or something else?) # free -m total ...
0
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1answer
18 views

Memory errors despite plenty of headroom (Ubuntu VPS)

I'm getting all sorts of memory-related errors from python and php, plus segmentation faults - yet the output of free -m constantly shows plenty of spare memory - i.e. greg@greg-brown:~$ free -m ...
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votes
2answers
31 views

Should I upgrade to more memory? [duplicate]

I'm using WHM on a VPS and am trying to work out whether or not I need to upgrade the hardware. I've currently got 4GB of memory. When I look at the daily process log it seems I have a site averaging ...
1
vote
1answer
24 views

Swap 99% but regular memory fine

I have a 1GB VPS server. I setup 1GB of swap ram too a few weeks ago and quite often it's hitting 99% whilst the regular memory is usually 40% - 60%. Most of my sites on the server run fine and fast. ...
0
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2answers
3k views

Multibit error encountered on Dell Server Memory

Dell OpenManage reported the following: Memory device status is critical Memory device location: DIMM_B2 Possible memory module event cause:Multi bit error encountered What does this mean? How bad ...
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votes
0answers
19 views

free and htop show no free ram but ps doesn't show who consumes it

Can someone please explain the following: [kait@prod0 tmp]$ sudo ps -e --format rss | awk 'BEGIN{c=0} {c+=$1} END{print c/1024}' 3538.48 [kait@prod0 tmp]$ free -m total used ...
0
votes
3answers
114 views

Selecting a webserver configuration

I have a website, which has grown from 10 visits per day, to 100 per day in couple of months, and now to about 800 unique visits per day. So far, I have been using a VPS with 512MB RAM, and shared ...
0
votes
1answer
129 views

How can used physical memory exceed sum of 'resident' memory reported by processes?

Given the output of top shown below (which shows all processes currently active): how is it possible that this virtual server reports ~500M physical memory as used (used - cached, verified by free), ...
0
votes
0answers
35 views

How to limit the RAM used by Apache Tomcat on AWS micro instance?

I am running Apache Tomcat with Geoserver as a .WAR on an AWS micro server running Ubuntu 14.04 with 1 GB RAM and ~700 MB swap, and I am concerned about my RAM usage because it is overflowing into my ...
17
votes
6answers
33k views

How to find memory usage of individual Windows services?

Task Manager shows the overall memory usage of svchost.exe. Is there a way to view the memory usage of individual services? Note this is similar to ...
-1
votes
0answers
21 views

What server config I need to answer 600k request in every 15 minutes for 300 SQL Server database [duplicate]

I will have 300 SQL Server databases on my machine that must answer 600000 request every 15 minutes. This server has a valid IP address and all request come from internet channel. for now I have a ...
6
votes
1answer
51 views

How can I find which memory have CE error?

In /var/log/kern.log: kernel: [13291329.657499] EDAC MC0: 48 CE error on CPU#0Channel#2_DIMM#0 (channel:2 slot:0 page:0x0 offset:0x0 grain:8 syndrome:0x0) This is edac log, one of the memory have ...
0
votes
1answer
30 views

Dell Poweredge 2970 - Cheap subsitute/compatible RAM for lab env? [closed]

I'm building a lab environment for virtualized routers, in prep for my next network cert. I have a Dell Poweredge 2970, but it only has 16G of RAM. I need to upgrade the RAM, to the max of 64GB, but ...
1
vote
1answer
893 views

What does `numactl --localalloc` do?

What does numactl --localalloc do? Does it bind program allocation to only the single node that numactl --localalloc was run on? Or does it ensure that whenever the program allocates it's given memory ...
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votes
0answers
20 views

Mail Server Components [duplicate]

Lets make some assumptions. For this theroetical we are not going to worry about OS. There is a 1,000 Clients. They send 10-20 Emails a day. They receive 20-40 Emails per day. Maximum email size is ...
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votes
5answers
4k views

How does a 32-bit machine support more than 4 GB of RAM?

I have always wondered about this and never totally understood how 32 bit machines are addressing more than 4 GB of RAM. I mean, there are no more address lines left, correct? I know even in our ...
1
vote
1answer
34 views

ps_mem.py vs top - memory usage?

Every now and again my apache server is crashing, getting an error saying the MaxClients has been reached. In my research I've gained the impression that I may be running out of memory (just checked ...
2
votes
3answers
58 views

java program out of memory before reaching xmx

On a Redhat CentOS 6.4 are only a few process running, using about 3GB RAM (System has 12GB available). One of the processes is a WSO2ESB Server (java), we start it with those parameters: -Xms2048m ...
0
votes
0answers
6 views

Motherboard issue? [migrated]

I have a system that will partially start. It gets up to about 1GB of memory, then completely freezes. It detects all the memory I put in, whether it is 8 or 16GB. I have used completely different ...
0
votes
1answer
29 views

when is the jvm heap allocated by the OS

One of our sap systems(PI ABAP+JAVA stack) was giving performance issue. The entire 64GB configured for the machine gets hogged up(and the 8 cores as well). Every one is suspecting the java part,but i ...
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votes
1answer
38 views

How to release the physical and virtual memory used from the mysql server? [closed]

Several php scripts are executed from cron on my CentOS 6.5, every php script contain database requests. Depending on the php object size and type the database requests can allocate too much memory. ...
0
votes
0answers
3 views

DG31PR intel board with 1GB RAM, can I add 2GB RAM with existing 1 GB? [migrated]

I have a PC with below mentioned configuration DG31PR intel board Core 2 Duo Processor Transend DD2 667 1 GB JetRam , JM667QLJ-1G, 240P DDR2 DIMM (128M*64) (64Mx8 DDR2 667 5-5-5) [LM] I am ...
5
votes
7answers
802 views

Bad byte in one RAM module / Block area of RAM from being used

I have four 512 MB RAM modules in one server. The fourth RAM is showing error for only one bit when I use memtest86+ to test the RAMs. Even when I swap the RAM in fourth slot with some other RAM I ...
2
votes
2answers
607 views

HP Proliant DL360 G7 All DIMM indicator lights amber

I am currently doing a RAM upgrade on an HP proliant DL360 G7 server. After installing the new RAM (18x 8GB KTH-PL316E/8G) the LED indicator lights for every single DIMM turned amber and the health ...
4
votes
0answers
46 views

Slab usage extremely high?

On a Centos 7 server with 32GB RAM memory I am running a few programs namely MySQL, Apache2, PHP. Recently I wanted to verify the amount of ram left as I was planning on installing a few more ...
0
votes
1answer
74 views

How to handle Docker memory management?

Update: Rather than spinning up my resque worker through the docker command (to test), I instead killed all my containers with fig kill, added it to the fig configuration, and ran fig up. This worked ...
3
votes
3answers
149 views

server's memory taken up almost to 8GB

Lately, our server face problem with the memory. Started from few weeks ago, our server was loading very slow. Accessing emails and websites were really take too long. Then we asked the server ...
4
votes
1answer
461 views

Growing OS cache in RAM causing high system CPU usage

Long question, so please bare with me: I'm having a weird issue with a server that I've never seen before. On a machine with ~30G of RAM with an application that takes ~10G (spread across hundreds of ...
0
votes
1answer
33 views

New Relic memory reporting

We're using New Relic to monitor a server and a PHP application. New Relic is reporting memory usage of 90%+, which aligns with top. However, the sum of memory used by the processes in New Relic ...
0
votes
1answer
60 views

Run app only in swap [closed]

I've a very low priority level program who consume large of memory. I need to free RAM for other programs. My objective is to kill -STOP <pid> this process and ```kill -CONT when i need it. But ...
1
vote
2answers
866 views

How to detect NX/XD bit under Windows

I'm trying to find a way to detect (using software) if the system I'm on has 'No eXecute' bit capability. Under Linux I would simply list the CPU features using /proc/cpuinfo but I found nothing in ...
0
votes
0answers
36 views

Memory usage of Postgresql and play framework

I am running a play framework application and a Postgresql server on a VPS which has 2vCores and 2GB of RAM and I'm having memory issues. I limited my play application to 1024MB with the parameter : ...
0
votes
0answers
50 views

Increased CPU usage and server response time

Over the past 10 days, I'm suddenly experiencing increased CPU usage on my website with CPU usage reaching 100% three times. During that time I'm unable to SSH to my website so I haven't been able to ...
3
votes
1answer
734 views

Linux Huge Pages Usage Accounting

I have configured Huge Pages for use with Java and it appears to be working well although I have a question about the accounting in /proc/meminfo. To illustrate # grep HugePages /proc/meminfo ...
1
vote
1answer
58 views

Redis eats up more and more memory

I am running Redis 2.8.17 on Ubuntu 14.04 and yesterday Redis started eating up all the memory until it was killed by OOM. I restarted it multiple times, restarted the server, flushed all the data, ...
0
votes
0answers
1k views

MySQL (MariaDB) crashes frequently

I recently migrated an old server running MySQL to a new VPS running MariaDB 5.5. I don't have too much running on the server (just a few PHP sites) and free memory seems to be OK, but the DB keeps ...
0
votes
1answer
2k views

How much memory can I safely assign to memcached?

I'm looking into using memcached on our server. We've just upgraded and now have a fairly powerful box: DELL PowerEdge R710 Linux RHEL 5 - 64bit 12GB RAM (We used to be on a 32bit 4GB box). The ...
0
votes
1answer
41 views

Is it possible to force a specific program to use virtual memory?

Let say I have 1GB RAM Ubuntu, I need to run both memcached and redis on the same machine The usage of memcached is quite heavy (e.g. 1K read per second) and redis is less heavy (but still 10 read ...
1
vote
1answer
45 views

Can I safely mix RAM (ECC) sizes in a server board?

I have a server (actually used as workstation) with a Supermicro X8DA6 motherboard, with 2 installed Intel X5650 processors. It uses ECC RAM. It currently has 6 Kingston KVR1333D3D8R9S/4GHB dimms ...
3
votes
1answer
262 views

Where did my memory go on linux (no cache/slab/shm/ipcs)

This is a headless server with 8GB RAM (kernel 3.12)... even after only a few days, i get low on memory. in fact, this server has OOMed a few days ago... something is losing memory, but i don't know ...
1
vote
1answer
58 views

HP proliant DL320 g5p Ram

I have 2 HP Poliant DL320 G5p servers that I am trying to do a ram upgrade on. They currently have 5 GB of DDR2-PC2 6400 non-registered, unbuffered and ECC. I am trying to install 8GB (4x2GB) and the ...
175
votes
13answers
65k views

Any benefit or detriment from removing a pagefile on an 8GB RAM machine?

I'm running Windows 7 on a dual core, x64 AMD with 8GB RAM. Do I even need a pagefile? Will removing it help or hurt performance? Would it make a difference if this is a server or a desktop? Does ...
0
votes
1answer
60 views

OpenVZ: shmpages keep increasing

I have an OpenVZ VPS. However the shmpages always increases to the limit in one or two days. My RAM usage is low (233M without cache). I only run nginx, php-fpm, and mariadb on the VPS. I've asked my ...
7
votes
3answers
750 views

Why does the “free” command and “dmidecode” show different values for RAM?

I've got a CentOS 5.10 (32-bit) server running on VMWare. It's allocated 4 GB of RAM. If I run dmidecode -t 17 | grep Size | grep MB I see: Size: 4096 MB Yet when I run free, I see: ...