A new version of the real-time Linux scheduler called SCHED_DEADLINE has been released on the Linux Kernel Mailing List. For people who missed previous submissions, it consists of a new deadline-based CPU scheduler for the Linux kernel with bandwidth isolation (resource reservation) capabilities. It supports global/clustered multiprocessor scheduling through dynamic task migrations. This new version takes into account previous comments/suggestions and is aligned to the latest mainline kernel. A video about SCHED_DEADLINE is also available on YouTube.
To view parent comment, click here.
To read all comments associated with this story, please click here.
Member since:2006-02-15
Member since:2012-10-27
Member since:2005-07-06
Member since:2005-07-06
> a "package manager" denotes a hierarchical file system.
Nope, a package manager doesn't denote that. It's a way of resolving package dependencies when a one or more parent packages are installed, removed or updated. It also handles one or more software repositories and can be used for entire OS upgrades. In other words, far superior to Windows Update or Apple's Software Update, both of which only handle MS or Apple products respectively and aren't used for OS updates either.
The fact that almost every Linux system has its partitions formatted with a hierarchical file system that packages sit on top of is a full two levels of abstraction away from a package manager.
> if you take a walk and re-consider linux again... boring, complicated, un-reliable, pretentious.
Not boring at all - particularly with massive choices you get for your desktop environment (instead of one for Mac OS X or maybe two if you're suffering Windows 8) and how you can customise it, which is usually where Linux desktops shine (think Compiz with all its special effects). I bet most Windows and Mac desktops look identically boring, with just the background colour/image changed and a stupidly large number of document icons on the Desktop.
Now if "boring" you mean not many commercial games for it, then I might agree, but there is a Linux client for Steam in beta right now, plus more and more games are working under WINE, never mind stuff like indie game houses supporting Linux (Humble Indie Bundle anyone?).
As for "complicated", you can pretty do most things by the GUI in Linux now and with things like Ubuntu's Software Centre, installing new packages is actually easier than Windows (I hate Windows myriad of package installers and updaters - it's nasty when every app updates in radically different ways).
Linux is one of the most reliable OS'es on the planet - only some of the BSD variants (UNIX again!) can beat it for uptimes. It's pretty rare to get a whole kernel crash nowadays that isn't triggered by some sort of hardware fault. It's why Linux is the only OS used for tiny embedded systems (watches, phones etc), through to larger consumer products (hard disk recorders, TVs, wireless routers) right through to servers and mainframes (the most popular OS on the Top 500 supercomputers? Linux).
I'm not sure how "pretentious" is an accusation you can level at Linux - I think Apple have that moniker well and truly sewn up. I've found Mac OS X to be a rather inferior UNIX to Linux with a shiny (prententious!) desktop layer on top that is no more functional than the average Linux desktop.
> try running lie-nux on your next airplane. good luck not "crashing".
I believe many airlines use Linux for their in-flight entertainment systems, but I couldn't speak about the more critical flight systems. I wouldn't be surprised if some of those run a hardened/real-time Linux variant to be honest.
Member since:2011-05-12
You're picking nice features from a huge range of Linux distributions.
Yes, of course Linux can run on much more limited hardware than let's say Windows and it has a number of nice DE/GUIs, but can it run those graphical wonders on limited hardware? IIRC you could run Linux on a 386 with 1 MB, but that rules out KDE, GNOME, XFCE. The Ubuntu tool you mentioned may be very nifty, but what use it is for Slackware users? Or anyone not using a GUI.
Package managers may be nice, but not everything is in a repository and even when everything is you can still break the system. Windows and OS X users can't even spell the word 'dependency'. For some reason these "inferior" systems don't have this problem.
Sure, Linux can make a great server operating system or a mediocre desktop system that's great for the more technical minded, but often when the positive points of Linux are presented they tend to be picked from various distributions.
OSNews is a sponsor of this year's O'Reilly OSCON in Portland, Oregon, USA. A lucky OSNews reader will win a free three-day pass, including two tutorials days. To win the pass, post a comment on this story saying something about Open Source Software or OSCON. We'll pick a winner at random next week. If you don't have an OSNews account, you may email us your entry. Part of the conference is the 9th annual Open Source Awards, and today the 16th is the deadline for nominations. If you'd like to nominate an outstanding open source contributor, do it here. Read on for more information about OSCON. Update: The 20% discount code for OSNews readers is "OSN."
"Windows is indeed slower than other operating systems in many scenarios, and the gap is worsening." That's one way to start an insider explanation of why Windows' performance isn't up to snuff. Written by someone who actually contributes code to the Windows NT kernel, the comment on Hacker News, later deleted but reposted with permission on Marc Bevand's blog, paints a very dreary picture of the state of Windows development. The root issue? Think of how Linux is developed, and you'll know the answer.
This is one of those news items that's fun to write, fun to read, fun to comment on, and where no one will be able to say anything unkind. It's all just one big ball of awesome fluffiness. TuneTracker, the BeOS radio automation software, has just released something very special: TuneTracker System 5, the first version designed entirely and specifically for Haiku. In fact, it actually includes Haiku in the software package. Better yet, TuneTracker also unveiled several system-in-a-box products - which have Haiku and TuneTracker pre-installed.
Exactly twenty years ago, a document was published that played a huge role in establishing the web as we know it today. Twenty years later, and this simple and straightforward document is proof of an irrefutable fact: while closed technologies can change markets, open technologies can change the world.
Oh multitasking. That staple of computing that got thrown out the window with many modern smartphones. We got some rudimentary thing in its place - but even as multitasking on phone and tablets improves, its user-visible side remains cumbersome. Windows 8 has a neat implementation, and now it's time Android follows in it footsteps.They're here! Whether that excites you or not remains to be seen, but the Galaxy S4, which will most likely become the best selling Android smartphone of the year by a huge margin, has been reviewed by all the major sites, and there's lots of interesting conclusions in there - although I think most of you will get the gist.Nokia has posted its quarterly results for the first quarter of 2013, and just like the quarters that came before, there's not a whole lot of good news in there. The rise in Lumia sales still can't even dream of making up for the sales drop in Symbian phones, and when broken down in versions, the sales figures for Windows Phone 8 Lumias in particular are very disappointing. In North America, Nokia is getting slaughtered.
The day has finally come: Google has started shipping Google Glass to the lucky few early adopters. Now that it's shipping, Google has also unveiled a lot more about the API and the specifications of the device itself. While the company had already given out substantial details at earlier occasions, there are still a few surprises here.
Almost exactly three years ago, I wrote about why OSNews was no longer OSNews: the alternative operating system scene had died, and OSNews, too, had to go with the times and move towards reporting on a new wave of operating systems - mobile, and all the repercussions that the explosion of smartphones and tablets have caused. Still, I was wondering something today: why aren't we seeing alternative operating systems on mobile?You can say what you will about Windows Phone and Windows 8's Metro interface (I refuse to drop that name) - it's inefficient, unpopular, cumbersome, beautiful, ugly, organised, clean, limiting - but there's one thing we can all agree on: it's unique and distinctive. CNet has published a profile of Microsoft's Albert Shum, the man behind Metro, and he highlights what I think is at the very core of Microsoft's problems in mobile right now.
Member since:
2012-10-27
a "package manager" denotes a hierarchical file system.
if you take a walk and re-consider linux again... boring, complicated, un-reliable, pretentious.
try running lie-nux on your next airplane. good luck not "crashing".
Edited 2012-10-27 13:27 UTC