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

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14
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5answers
36k views

Dump a linux process's memory to file

Is it possible to dump the current memory allocated for a process (by PID) to a file? Or read it somehow?
1
vote
7answers
2k views

Does Dell Poweredge SC1425 need proprietary memory?

We have a Dell Poweredge SC1425 which we're trying to upgrade to serve as an emergency backup, and having no luck finding memory that works with it. The 2gb that's in there works fine - it's when we ...
0
votes
2answers
469 views

Microsoft exchange maintenance plan kills the server every night

I believe I have a server with faulty hardware. I think it's the motherboard, because I've tested the RAM, but anyway, I'll explain what happens. My exchange server has 1 Private store (13GB), 1 ...
7
votes
3answers
6k views

VMware - persistent “Host memory status” alarm in vSphere

I have a particular VMWare ESX 4.1 host that has a very persistent "Host memory status" alarm. This is running on an HP ProLiant DL360 G7 server. The HP ILO and System Management agents don't know ...
0
votes
1answer
32 views

MSSQL 2008 r2 Express: there is insufficient system memory in resource pool 'internal' to run this query

I'm experiencing this error during the lifecycle of my DotNetNuke Installation. I've change the hosting server and now I've got a Windows Server 2012 with IIS 8 an SQL server 2008 r2 Express running ...
9
votes
3answers
5k views

Non-ECC memory with ZFS: a stupid idea?

I have a new server and am planning to upgrade the paltry 2 GB of memory to the maximum of 16 GB. (Theoretically 8 GB is the limit, but empirically 16 GB has been shown to work.) Some guides advise ...
2
votes
4answers
1k views

Get maximum memory usage of linux executable

I need a shell script which will retrieve the maximum memory consumption of a linux executable. The executable may spawn child processes using significant amounts of RAM which should be included in ...
0
votes
1answer
26 views

See ECC correction count

I'm curious as to whether or not there's some performance counter that will log the number of ECC corrections required, that could perhaps be tracked as an early indicator of memory failure. I imagine ...
13
votes
1answer
235 views

What is the Rowhammer DRAM bug and how should I treat it?

DRAM chips are very tightly packed. Research has shown that neighboring bits can be flipped at random. What is the probability of the bug triggering at random in a server-grade DRAM chip with ECC ...
-2
votes
0answers
29 views

How Much RAM / CPU Needed / Wordpress 5GB (min) DB, 1M Posts, 500K Users / Apache [duplicate]

First, I know you guys love these questions, but I'm not looking for an exact answer. I'm looking for a ballpark. A number I could reasonably suggest. I've yet to deploy a wordpress installation -- ...
2
votes
3answers
1k 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 ...
2
votes
1answer
106 views

Clear Dell OpenManage SBE memory log of all and specific connectors without rebooting the server

Running omreport chassis results in: Health Main System Chassis SEVERITY : COMPONENT Ok : Fans Ok : Intrusion Critical : Memory Ok : Power Management Ok : Processors Ok ...
1
vote
1answer
1k 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
votes
1answer
56 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 ...
5
votes
2answers
42 views

How measure memory without copy-on-write pages?

How can one measure total RSS memory occupied by a set of (forked) processes, without double-counting shared and copy-on-write pages?
0
votes
0answers
9 views

Is there any dynamically produced .log file showing up the memory usage on FreeBSD? [migrated]

I am using FreeBSD 10.1-RELEASE and I was just wondering if there is any .log file produced by default from the system because I am using ELK and I want to pass this file to logstash and then ...
1
vote
2answers
352 views

order 4 allocation failure disaster

Some environment details first: Hardware: Intel Server Board S2600GZ 2 x Intel Xeon CPU E5-2620 64GB DDR3 RAM Intel RAID Controller RS2BL (LSI SAS2108) with 4TB LVM Volume made of SAS disks ...
0
votes
1answer
854 views

java 7: should users be aware of changes in heap memory handling?

After installing the latest Java 7 Development Kit (Java SE 7u11) on my Windows 7 Professional 32bit PC with 4Gb RAM, I noticed I can't allocate much memory for Tomcat. Whereas these memory settings ...
1
vote
1answer
60 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. ...
-2
votes
0answers
11 views

How can I write code to purposefully eat up RAM and CPU resources? [migrated]

I'm a newly hired intern at a small business that is attempting to break into the 21st century in terms of it's IT infrastructure, and I am tasked with helping to grow this infrastructure. I am under ...
14
votes
2answers
1k views

What RAM options do I need to know before buying Server RAM?

This is a proposed Canonical Question about Server Memory. I have to buy a Dell R420 server and there are various combinations (1600 and 1333 MHz RDIMMS and UDIMMS) and Performance Optimized vs. ...
1
vote
2answers
1k views

troubleshooting out of memory error messages from mysql

we have a web application (racktables) that's giving us grief on our production box. whenever users try to run a search, it gives the following error: Pdo exception: PDOException SQLSTATE[HY000]: ...
1
vote
3answers
349 views

What is the size of shared memory page?

On Linux, for each process, I can check /proc/PID/statm file. It's numbers contain values of: Total program size, in kilobytes Size of memory portions, in kilobytes ?????? Number of pages that are ...
13
votes
7answers
12k views

After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB

(I have also posted this on technet but I'm running out of ideas) I've upgraded from Windows Server 2008 R2 Standard to Enterprise in order to make use of more RAM. The server previously had 32GB of ...
0
votes
2answers
860 views

HP Proliant DL320 G5 Memory Registered or Unregistered?

I have an old HP Proliant DL320 G5 with 2x 1GB of RAM. I would like to swap out the old ram and install 4x 2GB of RAM to bring it to the max capacity. The manual calls for PC2-5300 unbuffered modules. ...
19
votes
7answers
38k 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
vote
1answer
967 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 ...
-1
votes
1answer
393 views

2U rack hardware, budget but stable, what to buy? [closed]

So, I'm tasked with helping buy motherboard/CPU/ram for a 2U server, that will be brought in luggage to China. The requirements are that the hardware is reliable/stable (read: long lasting) at the ...
0
votes
0answers
15 views

Anon value from pmap list too high. how to lower?

I do not understand why apache is using so much memory. I ran pmap and received the following: 912117: /usr/local/apache/bin/httpd -k graceful -DSSL Address Kbytes RSS Dirty ...
1
vote
1answer
60 views

Growing memory use

Let me start with picture: This is memory usage of our backup Tomcat server. It is just hanging there, processing simple healt check request every couple fo seonds and waiting for main server's ...
0
votes
0answers
16 views

Poor memory performance on intel avoton?

I have 12 of these supermicro A1SA2-2750F boards that I'm playing around with in order to compare them to Dell's C5220s but I'm seeing consistent poor memory performance. Just curious if anyone's ...
1
vote
1answer
147 views

System-wide JRE settings in deployment.properties file are ignored?

Basically I have the same problem as in this question. However the proposed solution doesn't work for me, not on a Win2003 server and not on a Win7 laptop used for testing. I have a Java SE 6 program ...
2
votes
2answers
58 views

Is an ECC ram enabled GPU necessary for a server, or will a normal gpu work fine in a server?

Is it a requirement for a server to use ECC ram on a GPU while the normal CPU ram is ECC? Im thinking that instead of using a Quadro k6000 or AMD Firepro, we could use a GTX 980 or AMD r9 290...if ...
-3
votes
0answers
28 views

DNS Server Hardware Specifications for 100,000 or 200,000 Queries Per Second (QPS) [duplicate]

I hope everyone is fine. I am planning a load testing on DNS Server. I want a single client to send upto 200,000 QPS. The thing is that now I am going to buy/utilise the Hardware that will run the ...
0
votes
4answers
71 views

How can I find out what RAM is in my ProLiant DL380p?

I know what RAM is compatible with my server, but without taking the lid off I don't know what specific modules I've got. It took two seconds to find out from vSphere that I've got eight(8) 8GB DDR3 ...
-3
votes
1answer
39 views

Does swap on 32-bit OS with 4 GB make sense? [closed]

Does having swap space makes sense if I have a 32 bit OS (Linux) and 4 GB RAM already? As it would have to be addressable with a 32 bit address, which are already all "used up" by the RAM, would ...
0
votes
0answers
48 views

Xen memory management

In real machine, I can reserve a certain of memory by editing grub to limit memory,which the machine can use, and then mapping the reserved memory using ioreamp. I can manage these memory and insert ...
2
votes
1answer
67 views

Adding new processor to HyperV server?

I currently have a HyperV Server 2012 R2 running on a motherboard that supports two processors, but currently has only one. It has 64GB of memory. I'd like to now add a second processor, moving half ...
2
votes
3answers
267 views

memtest86+ crashing on server

We have a few DELL 1950 servers. One of those servers has CentOS6.3 and it's randomly rebooting, so I suspected it was hardware (no log generated). The other four servers do not randomly reboot. We ...
2
votes
4answers
697 views

Single vs dual sticks of RAM, for dual-CPU system

Just wishing to confirm the old adage I'm holding to, is that for X memory on dual-cpu server, it better to have two X/2 sticks, as it enables each CPU to independently access said memory stick. Was ...
1
vote
1answer
80 views

Linux memory usage higher than sum of processes

I'm trying to figure out what is eating my memory. I'm speculating that if it's not used by userspace processes then it may be from the kernel side. There is the output from some commands. I know ...
1
vote
0answers
45 views

Max memory for HHVM instance on vServer

Im tried hhvm on my vServer and have problems with the memory used. The performance is great, but the used memory consumption is horrible. I have a vServer with min 4GB and max 8GB memory and hhvm ...
-2
votes
0answers
25 views

Getting segmentation fault when giving input to structure members on run time [migrated]

I have written a small code to fetch info of 'n' number of students. But after running the program, I'm getting a segfault. Please find the code below. struct students { char name[20]; int ...
0
votes
0answers
61 views

understand FreeBSD vmstat output about meory

My Dell PowerEdge server has 24GB memory and 6GB swap. It has some VirtualBox vms (virtual machines), one vm is assigned 10GB memory and no swap. Right now the vm is slow, the vm's vmstat output is: ...
2
votes
1answer
3k views

Page table fast growth

Not long ago I've spotted very interesting tool RamMap. I found on several servers running our x32 software that PAGE TABLE grows very quickly – 1.2 GB per day (of 10GB all). Also NONPAGED POOL grows ...
0
votes
0answers
16 views

MongoDB mongos memory usage

Planning how to deploy a shard-ready cluster (Single shard at the moment, with all config servers and mongos processes), I've read the MongoDB operations best practices. I have doubts about the memory ...
6
votes
1answer
859 views

Linux high RAM usage for unknown reason

after searching around for this and only finding posts of people who do not interpret the "cached" figure correctly, I decided to ask this question. I have some servers at hand, which act strangely. ...
0
votes
0answers
15 views

How to ascertain where to effectively allocate server resources?

I have recently received an upgrade to one of my servers of a 256GB SSD drive (this is in addition to two other primary 1TB drives) and a memory upgrade bringing the server to 64GB from 32GB of RAM. ...
0
votes
0answers
56 views

Ubuntu server memory fills up and Redis crashes

Here's /proc/meminfo: MemTotal: 7629488 kB MemFree: 237528 kB Buffers: 70536 kB Cached: 45612 kB SwapCached: 0 kB Active: 99400 kB Inactive: ...
1
vote
0answers
54 views

PCIe card memory regions ignored on linux kernel 3.13

On my system, with kernel 3.13.0-32-generic (Ubuntu Server 14.04.1 LTS) installed, one of the PCIe boards in the system (06:00.0) is having it's memory regions ignored: Interrupt: pin A routed to IRQ ...