[kwlug-disc] Accessing memory, 64 vs 32

Khalid Baheyeldin kb at 2bits.com
Thu Aug 20 11:52:24 EDT 2009

>From what I have read, 32bit systems see only around 3.5 GB. For anything
more, 64 bit is needed.

As for stability, I have been using the amd64 version of Ubuntu Server, and
it has been extremely stable. No issues what so ever compared to 32 bits.

Even though it says "amd", this works on Intel's 64 bit CPUs.

Again, this is Ubuntu/Debian where all the stuff you install is from a
homogeneous repository that was all compiled for 64 bit, and hence there
should be no issues. For other distros, then story may vary depending on
how/where the packages were built.

For workstations, you may want to check the status of Adobe Flash on 64 bit.
There used to be issues, but they were reportedly being worked on. Not sure
what the end status is. Not an issue with servers.

On Thu, Aug 20, 2009 at 10:59 AM, Insurance Squared Inc. <
gcooke at insurancesquared.com> wrote:

> If I've got 8 gigs of ram in my webserver, do I need to install a 64bit
> version of linux to use that amount of Ram?  Or will the older, more stable
> 32 bit versions work fine with that amount of memory?
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Khalid M. Baheyeldin
2bits.com, Inc.
Drupal optimization, development, customization and consulting.
Simplicity is prerequisite for reliability. --  Edsger W.Dijkstra
Simplicity is the ultimate sophistication. --   Leonardo da Vinci
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