OMG! Ubuntu: One of the biggest drawbacks to running Mir on the Ubuntu desktop at present is a lack of native GTK+ application support — both in the native display server and the Unity 8 shell that runs atop it.
A lot has changed since then. Commodity servers running Linux are the norm, virtualisation and Cloud services are common, but some organisations are still running UNIX or Windows systems because Linux migration seems like a lot of work and a big risk. It didn’t do Amazon any harm though, did it?
SOCIAL NETWORK Facebook has introduced some of the fruits of its Open Compute project, revealing a networking switch and a supporting Linux operating system (OS).
Ivan Shapovalov is back on track with his Reiser4 file-system contributions.
Shapovalov has been working on Reiser4 support for TRIM/Discard on SSDs. It's been some weeks since the last revision but the fourth version of the patches are now out there for this common file-system feature of being able to discard blocks by informing the solid-state drive about blocks that are no longer in use by the file-system. Most mainline Linux file-systems already support SSD discard, which is generally exposed via the discard mount option -- which is also the case for Reiser4.
HowToGeek: Most of the software you’ll want to install on your Linux distribution is available in its software repositories.
Over the past few months software developer Morgan Phillips has begun to teach herself how the Linux kernel works by studying text books. But instead of taking notes, she weaves the new terminology and ideas she learns into poetry about system architecture and programming concepts.
If you've been following along with our earlier articles on next-gen filesystems like btrfs and zfs, but wanted an easy way to get started without having to learn anything on the command line (or need an easy way to take advantage even though you're a Windows-only user), you're in luck. Today, we're going to look at two ready-to-rock ZFS-enabled network attached storage distributions: FreeNAS and NAS4Free.
Massive Open Online Courses (MOOCs) are increasing in their popularity. We've seen first hand how much people want to be able to access and learn new information on their own schedule. For example, our Introduction to Linux MOOC, hosted by edX, has received more than 150,000 registrations, and it doesn't even start until August 1.
As you may know, Ubuntu 14.10 Utopic Unicorn will come with interesting changes. The integration of Qt 5.3 is almost done, but the developers still have to fix some known issues.
The developers hope to make Qt 5.3 available as default next week, due to the fact it has passed 99% of the tests.
Sam Lanning is a computer science student at Oxford University and a sponsored member of the AllSeen Alliance. Sponsored members are reserved for organizations such as non-profits, associations or academic institutions and can be admitted by a majority AllSeen board vote.
Red Hat Enterprise Linux (RHEL) is a GNU/Linux distribution developed by Red Hat and targeted toward the commercial market.
Around 1 week ago the version 7 of Red Hat Enterprise has been released, and there seem to be great and interesting news in this version of the most used Gnu/Linux Enterprise distribution, let’s see some of them:
- Linux Containers
- XFS filesystems
- Performance management
- All the rest
This is in my point of view one of the most interesting thing of this release, and show how much Red Hat want to support this project as they give a lot of support to docker.
Docker is an open source project that automates the deployment of applications inside Linux Containers, and provides the capability to package an application with its runtime dependencies into a container. It provides a Docker CLI command line tool for the lifecycle management of image-based containers. Linux containers enable rapid application deployment, simpler testing, maintenance, and troubleshooting while improving security. Using Red Hat Enterprise Linux 7 with Docker allows customers to increase staff efficiency, deploy third-party applications faster, enable a more agile development environment, and manage resources more tightly.
This open up a lot of possibility to easily and quickly deploy test/qa machine on your server.XFS filesystems
The default file system for an Anaconda-based installation of Red Hat Enterprise Linux 7 is now XFS, which replaces the Fourth Extended Filesystem (ext4) used by default in Red Hat Enterprise Linux 6. The ext4, ext3 and ext2 file systems can be used as alternatives to XFS.
XFS is a highly scalable, high-performance file system which was originally designed at Silicon Graphics, Inc. It was created to support file systems up to 16 exabytes (approximately 16 million terabytes), files up to 8 exabytes (approximately 8 million terabytes) and directory structures containing tens of millions of entries. XFS supports metadata journaling, which facilitates quicker crash recovery. XFS file system can also be defragmented and expanded while mounted and active. Note that it is not possible to shrink XFS file system.
“[Use of XFS] opens the door to a new class of data warehouse and big data analytics applications,” said Mark Coggin, senior director of product marketing, in an interview before the announcement.Performance management
Tuna is a tool that can be used to adjust scheduler tunables such as scheduler policy, RT priority and CPU affinity. It also allows the user to see the results of these changes.
Threads and IRQ handlers are able to be tuned. It is also possible to isolate CPU cores and sockets, moving all threads away from them so that a new, more important set of threads can run exclusively.
Tuna provides a graphical user interface (GUI). The GUI displays the CPU topology on one screen, which helps identify problems. It also allows changes to made to running threads, and see the results of those changes immediately.
Most Tuna operations can be performed on either the command line, or in the GUI.
Performing tuning tasks using traditional Linux tools can be daunting and complicated. Tuna reduces that complexity and provides powerful tools for getting the most of the MRG Realtime system.
In the past there was not any upgrade procedure or path to upgrade to a newer RHEL release, and so to move from 5 to 6 the suggested path was something like “backup date, scratch, reinstall and retrieve data” not so handy or useful if compared to other distribution (e.g. Debian) where you can easily upgrade from a release to another, but with version 7 this could change as with version 6.5 there is a feature called “in place upgrade”, I’ve not tested it yet but the fact that there is an official document and procedure it’s a good start for sure.Systemd
systemd is a system and service manager for Linux, and replaces SysV and Upstart used in previous releases of Red Hat Enterprise Linux. systemd is compatible with SysV and Linux Standard Base init scripts.
systemd offers, among others, the following capabilities:
- Aggressive parallelization capabilities;
- Use of socket and D-Bus activation for starting services;
- On-demand starting of daemons;
- Managing of control groups;
- Creating of system state snapshots and restoring of the system state.
Wait, this is an enterprise server release, so who cares if it ship the ugly unity (my opinion of course) or the latest Gnome ?
It’s not a windows server, so just go via ssh with your terminal and you’ll be fine.
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