Linux 64bit system or 32bit for TFS?

[aimer]

Hi,
What will be better for performance TFS, 32bit or 64bit Unix system?

 

[sn3ejk]

If you got more than 4 GB you should use 64, if not 32.

 

[aimer]

Ok, but 32bit also works with more than 4gb. But what is better for performance in TFS, 32/64?

 

[fluidsonic]

32 bit does not work with more than 4 GB.
The whole dedicated server can have more than 4 GB, that's true. But TFS itself cannot use more than around 3 GB of that memory.
See 3 GB barrier - Wikipedia, the free encyclopedia

OT servers should always use 64 bit.

 

[aimer]

But Linux kernel in 32bit supports more than 4GB of memory. Must be used with PAE.

 

[Joepod]

But Linux kernel in 32bit supports more than 4GB of memory. Must be used with PAE.

That may be so, but like fluidsonic said, TFS itself cannot use more than 4GB.

Just use 64-bit)

 

[dchampag]

Yeah with 32 bit the system may support more memory, but the way that 33 bit works it only allows each application to use so much. Regardless of the total amount.

 

[Fallen]

But Linux kernel in 32bit supports more than 4GB of memory. Must be used with PAE.

It does, but have a look at what Linus said:

PAE turned that very simple fact on its head, and screwed things up royally. Whoever came up with the idea was totally incompetent, and had forgotten all the DOS HIGHMEM pains. There’s a damn good reason why we left the 286 behind, and started using 386′s, instead of having HIGHMEM crap with windows into a bigger physical space.

[...]

So repeat after me: PAE didn’t ever really fix anything. It was a mistake. It was just a total failure, and the result of hw engineers not understanding software.

See also: http://unix.stackexchange.com/a/12071

 

[Milice]

You should just pick whatever fits your computer better.

 

[dchampag]

Linux is so resource friendly that you should just use 64 but because then if you choose to upgrade ram or whatever, there will be no issues with your server using it.