Beorn_Bear
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Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:29 pm

Does anyone know if the new version of Raspbian Buster will be 32 bit or 64 bit?! I would imagine that a 64-bit version will work faster in the Raspberry Pi 4!!

gordon77
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Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:33 pm

Do you mean the one released 20/6, which is 32 bit, or a newer one?

Heater
Posts: 14296
Joined: Tue Jul 17, 2012 3:02 pm

Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:35 pm

There is no 64 bit Raspbian release as yet.

I read here today that it is under development.
Memory in C++ is a leaky abstraction .

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PeterO
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Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:36 pm

Heater wrote:
Fri Jun 28, 2019 6:35 pm
There is no 64 bit Raspbian release as yet.

I read here today that it is under development.
I find that highly unlikely !
PeterO
Discoverer of the PI2 XENON DEATH FLASH!
Interests: C,Python,PIC,Electronics,Ham Radio (G0DZB),1960s British Computers.
"The primary requirement (as we've always seen in your examples) is that the code is readable. " Dougie Lawson

geev03
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Location: London, UK

Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:37 pm

The new version currently available is 32 bit.
But almost every day it is getting newer after an ' apt update && apt upgrade -y ', but still 32 bit.

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B.Goode
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Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:48 pm

Beorn_Bear wrote:
Fri Jun 28, 2019 6:29 pm
Does anyone know if the new version of Raspbian Buster will be 32 bit or 64 bit?! I would imagine that a 64-bit version will work faster in the Raspberry Pi 4!!


This reply quotes from https://forums.tomshardware.com/threads ... 239/page-2

Q: Is an 64-bit version of Raspbian in development? Some applications benefit a lot from ARMv8 / 64-bit (NEON) optimizations.


A (from Eben Upton):
So 64-bit Raspbian would actually just be AArch64 Debian. It is probably feasible to build a work-alike version of our standard release against the AArch64 repos (we already do this for PCs and Macs with the i386 repos), but we're currently unpersuaded that there's a benefit.

Much more likely is that we move in due course to a 64-bit kernel with the 32-bit Raspbian userland on top of it. There's work to be done, but this would bring some performance improvements in some areas by reducing page-table maintenance cost versus our current 32-bit LPAE kernel.


So to highlight:
It is probably feasible to build a work-alike version of our standard release... but we're currently unpersuaded that there's a benefit.

Heater
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Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:49 pm

PeterO,
I find that highly unlikely !
How so?

Sadly I can't find the post now. It even included a link to a source repository.

I would find it unlikely that it was not being considered and even worked on at this time.
Memory in C++ is a leaky abstraction .

jahboater
Posts: 4939
Joined: Wed Feb 04, 2015 6:38 pm

Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:52 pm

PeterO wrote:
Fri Jun 28, 2019 6:36 pm
Heater wrote:
Fri Jun 28, 2019 6:35 pm
There is no 64 bit Raspbian release as yet.

I read here today that it is under development.
I find that highly unlikely !
PeterO
Sakaki has done all of this alone.
Clearly she is brilliant, but it shows it can be done.

Its the cost of maintaining two distro's that is the problem for the RPF.
Last edited by jahboater on Fri Jun 28, 2019 6:59 pm, edited 1 time in total.

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PeterO
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Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 6:56 pm

jahboater wrote:
Fri Jun 28, 2019 6:52 pm

Sakaki has done all of this alone.
So i t's not Raspbian then !
PeterO
Discoverer of the PI2 XENON DEATH FLASH!
Interests: C,Python,PIC,Electronics,Ham Radio (G0DZB),1960s British Computers.
"The primary requirement (as we've always seen in your examples) is that the code is readable. " Dougie Lawson

jahboater
Posts: 4939
Joined: Wed Feb 04, 2015 6:38 pm

Re: Raspbian Buster - 64 bit?!

Fri Jun 28, 2019 7:02 pm

PeterO wrote:
Fri Jun 28, 2019 6:56 pm
So i t's not Raspbian then !
PeterO
The plain 64 bit OS is Gentoo yes, but .......
This project is a bootable, microSD card 64-bit kernel, 32-bit Raspbian Stretch 'Desktop' host OS + 64-bit Debian Buster guest OS image for the Raspberry Pi 3 model B and B+ single board computers (SBC). It is intended for users who would like to retain their familiar Raspbian tools, desktop and repos, but who also need to run one or more 64-bit only software components on their Pi.
Is this a little bit like Dr Uptons suggestion?
Much more likely is that we move in due course to a 64-bit kernel with the 32-bit Raspbian userland on top of it.

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