In computer architecture, 64-bit integers, memory addresses, or other data units are those that are at most 64 bits (8 octets) wide. Also, 64-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. 64-bit is also a term given to a generation of ...

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23
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8answers
1k views

What benefits are there to running a 64-bit Operating System?

I would like to hear community opinions on reasons to switch, to utilise, or when one should consider a x64 platform. Plus are there any additional benefits of running 64-bit Windows 7? over 64-bit ...
21
votes
4answers
2k views

Can MySQL effectively take advantage of 64 GB RAM?

We have been running into a problem where querying a table that has approximately 50 million rows, and has an index size of 4 GB (table size of about 6 GB) results in the database server swapping ...
15
votes
10answers
28k views

How do I know if I am running 32 or 64-bit Linux?

what would be a command to run in different distros?
15
votes
3answers
8k views

How much overhead does x86/x64 virtualization have?

How much overhead does x86/x64 virtualization (I'll probably be using VirtualBox, possbly VMWare, definitely not paravirtualization) have for each of the following operations a Win64 host and Linux64 ...
14
votes
7answers
13k 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 ...
12
votes
4answers
4k views

Running a Small 64bit Amazon EC2?

I'm playing with Amazon EC2, and I've got a 64bit AMI, but when I launch it, the 'Instance Type' only has 'Large', 'Extra Large' and 'High-CPU Extra Large', no 'Small' which the documentation lists as ...
11
votes
6answers
30k views

Can I run 64-bit VM guests on a 32-bit host?

Can I run 64-bit VM guests on a 32-bit host? If I have a physical PC with 32 bit can I launch a VM that is 64 bit? What virtual machine software (Virtual PC or VirtualBox or other) would allow this? ...
10
votes
3answers
13k views

\Program Files vs. \Program Files (x86) in 64-Bit Windows

What are reasons to have separate folders besides to easily distinguish 32 bit images from 64 bit images?
9
votes
7answers
21k views

How much RAM does a server actually need?

I have a quite a few servers deployed around the world. They are running Windows 2003 x64 with SQL Server 2005 x64 with 6 GB of RAM. The boxes do not have the best (or even an acceptable) ...
9
votes
6answers
6k views

RHEL5: Forbid installation of i386 packages on 64-bit systems?

Everytime I install something with yum, it tries to install both x86_64 and i386 versions of the package if both are available. Is there any way I can forbid that without specifying the arch of the ...
8
votes
2answers
1k views

Linux can't find file that exists

I'm trying to get Google's Dart language up and running, but it errors when running dart2js. I'm running Arch linux and I installed dart-sdk from AUR. Some relevant terminal output lies below. % ...
8
votes
2answers
1k views

ASP.NET performance decrease between 32bit/64bit server

We are currently in the process of upgrading our 32bit production server to a more powerful 64bit server whilst upgrading to ASP.NET 4. However, upon doing some light load testing we seem to be having ...
7
votes
3answers
2k views

Production server has 16GB of RAM and a 32 bit OS. Replace with 64 bit OS?

I have a production server with 16GB of RAM that came with a 32bit CentOS installation. The website hosted on this server is getting increasing amounts of traffic every day, which has led to some ...
7
votes
3answers
9k views

Process Monitor fails to start on a 64 bit computer

When I try to start Process Monitor from SysInternals on some 64 bit windows 7 machines,the process fails to start. There is no error message. I double click and nothing happens. Other 64 bit windows ...
7
votes
4answers
34k views

SQL Server Installation: Is it 32 or 64 bit?

Recently I was performing an OS upgrade on one of our DB servers, moving from Server 2003 to Server 2008. The DBMS is SQL Server 2005. While reinstalling SQL on the new Windows installation, I went to ...
7
votes
3answers
411 views

can a 32bit Operating System use all 8 Gigs of ram with 64bit hardware

Weird question: In the office whe are discussing if whe have a machine that is 64bit infrastructure (hardware) with a 32bit OS (Server 2008 std) and 8 gigs of ram. The OS detects the full 8 gigs of ...
7
votes
2answers
30k views

x64 Windows reports 32GB RAM usable out of 64GB RAM installed - why?

I've got a server with 64GB RAM installed (reported in both the bios and in Windows), but the system information from control panel displays the fact that only 32GB of this is usable. I've only ever ...
7
votes
5answers
10k views

Windows 2008 Server SP2 64bit - TCP Connections never releasing after TIME_WAIT

We have an issue with Windows 2008 Datacenter edition SP2 64bit. We have a process that is polling very frequently and establishing new TCP connections. The system gets in a state where we end up with ...
6
votes
4answers
1k views

Easy way to convert custom 32-bit AMI into 64-bit one?

I have customised (EBS-backed) AMI for running a demo version of an application of ours. (The AMI contains Ubuntu 11.04 with a Tomcat & MySQL setup for the app itself, and Jenkins for easy ...
6
votes
10answers
6k views

Which linux version to install: i386 or x64?

Talking about ease of maintanence / software support does it matter what version of linux i386 or x64 version is installed? Server obviously is 64 bit however i wonder if living with 64bit OS would ...
6
votes
2answers
5k views

GPO Installs - Differentiating between 64 and 32 bit systems

What is the easiest way to use group policies to install the 64 bit version of a package on 64bit systems and the 32bit package on 32 bit systems. I have done some searching and I am not seeing ...
6
votes
1answer
11k views

Is there a distinction between 64 bit and 32 bit regedit?

This question is asked out of total ignorance and no access to a 64 bit windows machine, but I would like to know whether there is anything special that needs to be taken into account regarding a ...
6
votes
3answers
2k views

Linux x86_64 reports 3.2G of memory instead of 4G

I have an ASRock G31M-GS motherboard with 4GB memory installed, but when I query the memory size under CentOS 5.4 (x86_64) [root@localhost ~]# uname -a Linux localhost.localdomain 2.6.18-164.el5 #1 ...
6
votes
1answer
2k views

How much memory will a Windows file-server be able to use effectively

In the near future we will be moving our fileserver to a newer box that will be running Windows 2008R2. I want to know how much memory Windows will be able to use for a system that is just a ...
6
votes
1answer
854 views

Debian, 6rd tunnel, and connection troubles

Long story short, I am having issues with IPv6 using a 6rd tunnel with my ISP, Charter Business. They offer a 6rd tunnel that I think I have properly set up, but the server doesn’t reply to every IPv6 ...
6
votes
3answers
2k views

Compile a debian package for amd64 on a i386 machine?

I have a i386 ubuntu hardy machine, and an amd64 ubuntu hardy machine. I want to compile a debian package (a.k.a. deb) for the amd64 machine on the i386 (because I don't have enough memory to compile ...
5
votes
4answers
5k views

Correct technique to find application in 32 and 64 bit versions of Vista/Windows 7 from CMD.EXE

BACKGROUND I have an existing CMD script that works fine. It launches an app from PROGRAM FILES like so "%PROGRAMFILES%\MyApp\app.exe" PROBLEM it works fine on 32-bit versions of Windows (Vista, ...
5
votes
2answers
2k views

How can I use powershell scripting to change SQL Server Aliases?

I have an x64 machine that regularly needs about 10 aliases changed in the SQL Server Client Network Utility (cliconfig) for both the x64 and x86 sides of the registry. Is there a way I could do this ...
5
votes
4answers
1k views

System speed/memory considerations x86 vs. x64

Currently I have Windows Server 2008 x64 installed on my machine. I'm about to reinstall when R2 comes out (few more days). Since I still remember all the tweaking with various device drivers, I'm ...
5
votes
7answers
9k views

How can I force the 32-bit version of the remote desktop client to run on 64 bit Vista?

Normally it is quite easy to run the 32 bit version of a windows application from the command line, e.g. run window: C:\Windows\SysWOW64\Notepad.exe You can tell that the process is 32-bit by ...
5
votes
5answers
4k views

RAM disk for Vista 64-bit

I have a workstation with 8GB RAM running Vista 64-bit. I'd like to try running some small server VMs in a virtual RAM disk to see how much performance improves. I haven't made a RAM disk since my ...
5
votes
2answers
629 views

Does the Windows 7 RC have any issues with the MacBook Pro on BootCamp?

I am wanting to get my feet wet with the Windows 7 x64 RC before I need to start supporting it. Has anyone run the RC on their MacBook Pro with bootcamp? Also, Have you pulled the bootcamp ...
5
votes
1answer
3k views

Is it possible to force a C# application compiled with the “Any” architecture tag to run as a 32 bit application on 64 bit windows?

I have a .Net application, compiled with the "Any" flag set for the architecture type. I am wondering if it is possible to force the application to run as a 32 bit application, on a(any) 64 bit ...
5
votes
4answers
2k views

Virtualization: 64-bit or 32-bit?

I'm going to install Ubuntu 10.04 Server in a virtual machine and want run MySQL and Lighttpd on it. Are there any benefits or disadvantages between 64-bit and 32-bit virtualization, except the 4 ...
5
votes
4answers
16k views

Administrator File Modification Privilege

Windows Server 2008 apparently allows an application to somehow configure the folder so that any changes made within the folder require administrator level access. I login with an account that has ...
5
votes
2answers
70k views

Where can I download the latest 64-bit edition of Sonicwall SSL-VPN NetExtender for Windows 7?

Does anyone know where to download the latest edition of the 64-bit version of SonicWall SSL-VPN NetExtender for Windows 7?
5
votes
3answers
10k views

Windows Server 2008 x64, Large File Transfers, and Memory Usage

I'm following up on this: http://serverfault.com/questions/37605/copying-large-file-to-remote-server-causes-it-to-run-out-of-physical-memory But figured I'd post this separately. I have a 64-bit ...
5
votes
1answer
2k views

Outlook 2010 “Cannot open this item” on Windows 7 64-bit

I have to admit this has stumped me... User's Workstation Outlook 2010 (32-bit) w/ Cached Exchange Mode enabled Windows 7 Pro (64-bit) Email account is on Exchange 2003 Problem The user is ...
4
votes
8answers
10k views

Small footprint 64 bit ISO reader

In the good old days of Windows XP we had the Microsoft Virtual CD-ROM Control Panel for mounting ISO's. Since Vista I have struggled to find a driver level shell extension that works on a 64 bit ...
4
votes
5answers
42k views

Installing SQL Server 2008 on Windows 7 64-bit

I'm having a shocking time trying to install SQL Server 2008 on 64-bit Windows 7. When I run setup.exe, I get the following error message: Microsoft .NET Framework 3.5 installation has failed. ...
4
votes
2answers
22k views

How to install Oracle OLE drivers for use in SQL Server 2008 R2 x64

As per standard procedure we've been using for years for previous versions of both Oracle and SQL Server, I have installed Oracle's latest ODAC package, which includes the Oracle OLE driver onto our ...
4
votes
5answers
272 views

Justifying a memory upgrade

My employer has over a thousand servers (running SQL Server 2005 x64 and a couple of other apps) all across the country. And in my opinion they are all massively underpowered for what they need to ...
4
votes
4answers
2k views

32 Bit Applications on a 64 Bit OS

Other than memory size limits of 4GB, what is the penalty for running 32 bit applications on an OS running in 64 bit? For example. does a 32 bit application require that it's address space be ...
4
votes
7answers
9k views

Running explorer as 32 bit on Windows 7 64 bit

How can you run a 32 bit version of explorer on 64 bit windows 7 x64? This is to allow tortoisehg to work. I've tried running "c:\windows\syswow64\explorer /separate" and it just starts another ...
4
votes
2answers
598 views

With Windows Server 2008, when do I need 32-bit and when do I need 64-bit?

I am getting a Windows server with the option for Windows Server 2008 32-bit and Windows Server 2008 64-bit. I will only be running IIS7 and SQL Server 2008 Express. Which should I use and what are ...
4
votes
2answers
835 views

FreeBSD 32bit to 64bit migration

I need to transfer my FreeBSD 7.0 i386 server to another hosting. I would like to also upgrade to the 64bit version (to eliminate 4GB memory limit). The server has common open source software: ...
4
votes
1answer
2k views

Windows Web Server 2008 R2 Max RAM 16 GB?

This is page: http://msdn.microsoft.com/en-us/library/aa366778%28v=vs.85%29.aspx I see: Windows Web Server 2008 R2 Limit on X64: 32 GB In my system display, I see: Only 16 GB are usable. Any ideas? ...
3
votes
9answers
4k views

64bit or 32bit Linux system?

I have a server that has 4GB of RAM. On it, I have installation of 32bit Slackware Linux 12.1. Of course, it is not using all of 4GB of RAM. I'd soon like to increase the RAM to 8GB, and am looking ...
3
votes
8answers
3k views

MemCached on Windows x64

This question has previously been asked, but that was a year ago and I wanted to know if there had been any developments since then. Basically we'd like to use a MemCached Server on a Windows Server ...
3
votes
7answers
226 views

Barriers preventing from deploying 64-bit OS in workstations?

At my workplace, our servers have run 64-bit OSes for years. But the workstations are a problem. Very few applications and drivers work well on 64-bit OSes. Those few cases are enough to prevent the ...