Linux 2.6 features list update

Linux 2.6 features list update

[Joe Pranevich]

Hello,

I've just completed a second revision of my "Wonderful World of Linux
2.6" document that I mailed around back in July. This document is my
reasonably complete list of the new features in Linux 2.6, with
explanations. This one covers up to the -test9 kernel released yesterday
and takes into consideration a lot of feedback from members of the list
and elsewhere. The also has large portions rewritten for flow, etc.

If you read the previous one, there actually haven't been that many big
changes since -test1. If you just want to see (some of) the changes, I
made a rough list at http://kniggit.net/wwol26-changes.html.

If you haven't read the previous one (or even if you have), I have
posted the update at http://kniggit.net/wwol26.html. (Text version:
http://kniggit.net/wwol26.txt)

Please let me know what you think. I am hopeful that this will be a good
resource for people to use for learning about Linux 2.6. Unless there's
some severe inaccuracies, I probably won't be updating this again until
the official 2.6 release is out.

Thanks so much,

Joe Pranevich
jpranevich<at>kniggit.net

Re: Linux 2.6 features list update

[Erik Hensema]

Joe Pranevich (jpranevich@kniggit.net) wrote:
> If you haven't read the previous one (or even if you have), I have
> posted the update at http://kniggit.net/wwol26.html. (Text version:
> http://kniggit.net/wwol26.txt)
> 
> Please let me know what you think. I am hopeful that this will be a good
> resource for people to use for learning about Linux 2.6. Unless there's
> some severe inaccuracies, I probably won't be updating this again until
> the official 2.6 release is out.

You don't mention the (partly incompatible) change to LVM (device mapper,
etc). Since many modern Linux installations use LVM, it's certainly worth
mentioning, IMHO.

-- 
Erik Hensema <erik@hensema.net>

re: Linux 2.6 features list update

[John Mock]

I think the section entitled "Laptops" is overly optimistic.  First,
as far as i know, suspend-to-disk has only this week been announced
(on this mailing list) for anything other than the i386 platform, and
even there, many laptops only marginally work with software suspend/
suspend-to-disk.  I really doubt that any file system utilizing USB or
ieee1394 is going to work reliably (if at all) with suspend for many
laptops in the near future.  I think the 2.6.0 shakedown and the amount
of attention (or lack thereof) given to suspend-related bugs makes it
clear that suspend-to-disk/software suspend is still experimental in
this release.

I sincerely hope that changes very soon and i will do what i can to 
help.  Meanwhile, please qualify that section to read:

   ... now supports full software-suspend-to-disk functionality on many
								-------
   laptops for the Linux user on the go.
   -------				  [emphasis to show added text]

It's definitely improved, but in many instances (especially where the 
laptop manufacturer has not provided full hardware/BIOS documentation),
it does not work well and may be difficult to make reliable in the near
future.

Respectfully submitted,
				-- JM

re: Linux 2.6 features list update

[Nigel Cunningham]

I don't use it myself, but I believe some of the users of the 2.4
version (which is what has just been ported to 2.6) are successfully
utilising USB and ieee1394 there (without the driver model!). There's no
great difference in the ported version, so it should work or be able to
be made to work with the port, even if (unlikely) there's something
fundamentally different in Patrick & Pavel's implementations that will
prohibit it from working.

Regards.

Nigel

On Mon, 2003-10-27 at 17:55, John Mock wrote:
> I think the section entitled "Laptops" is overly optimistic.  First,
> as far as i know, suspend-to-disk has only this week been announced
> (on this mailing list) for anything other than the i386 platform, and
> even there, many laptops only marginally work with software suspend/
> suspend-to-disk.  I really doubt that any file system utilizing USB or
> ieee1394 is going to work reliably (if at all) with suspend for many
> laptops in the near future.  I think the 2.6.0 shakedown and the amount
> of attention (or lack thereof) given to suspend-related bugs makes it
> clear that suspend-to-disk/software suspend is still experimental in
> this release.
> 
> I sincerely hope that changes very soon and i will do what i can to 
> help.  Meanwhile, please qualify that section to read:
> 
>    ... now supports full software-suspend-to-disk functionality on many
> 								-------
>    laptops for the Linux user on the go.
>    -------				  [emphasis to show added text]
> 
> It's definitely improved, but in many instances (especially where the 
> laptop manufacturer has not provided full hardware/BIOS documentation),
> it does not work well and may be difficult to make reliable in the near
> future.
> 
> Respectfully submitted,
> 				-- JM
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-- 
Nigel Cunningham
495 St Georges Road South, Hastings 4201, New Zealand

Evolution (n): A hypothetical process whereby infinitely improbable events occur 
with alarming frequency, order arises from chaos, and no one is given credit.

Re: Linux 2.6 features list update

[Pavel Machek]

Hi!

> I think the section entitled "Laptops" is overly optimistic.  First,
> as far as i know, suspend-to-disk has only this week been announced
> (on this mailing list) for anything other than the i386 platform, and
> even there, many laptops only marginally work with software suspend/
> suspend-to-disk.  I really doubt that any file system utilizing USB or
> ieee1394 is going to work reliably (if at all) with suspend for many
> laptops in the near future.  I think the 2.6.0 shakedown and the amount
> of attention (or lack thereof) given to suspend-related bugs makes it
> clear that suspend-to-disk/software suspend is still experimental in
> this release.
> 
> I sincerely hope that changes very soon and i will do what i can to 
> help.  Meanwhile, please qualify that section to read:
> 
>    ... now supports full software-suspend-to-disk functionality on many
> 								-------
>    laptops for the Linux user on the go.
>    -------				  [emphasis to show added text]
> 
> It's definitely improved, but in many instances (especially where the 
> laptop manufacturer has not provided full hardware/BIOS documentation),
> it does not work well and may be difficult to make reliable in the near
> future.

swsusp is not limited to laptops, and no we do not much bios
documentation. It also worked on x86-64 for half a year...

								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]