yeah I'm surprised Canonical didn't recommend 64bit Ubuntu 12.04 by default. I know they discussed doing so at the developer summit. Entry level desktops and laptops have had 4 gigs of ram by default for a couple of years now. On a different note remember when they were trying to make btrfs the default file system for the last two releases of Fedora? The installer doesnt even support btrfs at ALL in the fedora 17 release. it worked in the last one but if you try to make or edit a btrfs filesystem during installation it will error out. Its a known issue in the release notes and will be resolved in Fedora 18. Hopefully they will have the new graphical installer by then too.
I remember reading that Phoronix article. they didnt enable any of the btrfs filesystem options like compression that improves the performance. Also it is really awesome how you can take snapshots of the filesystem and rollback to an earlier date if there was a problem. How can btrfs mature if no one uses it? I believe Oracle is making it the default filesystem now. the only thing holding it back from wide spread adoption I think is the fsck
the only thing holding it back from wide spread adoption I think is the fsck
That's a very big "only" IMO. I'm not about to install a file system that doesn't have a reliable recovery utility. It's a shame that politics has prevented ZFS from being widely used in Linux; it offers everything that btrfs does, and more. And it is now a very stable and reliable fs.
This sort of thing is why I prefer FreeBSD to Linux.
Btrfs is still marked as EXPERIMENTAL. Take that as you will, but clearly some people don't think it's at a point where it should be used in a production environment yet, and those people are working on the kernel.