defrag – Jupiter Broadcasting

Sorry, I don’t do Windows | LINUX Unplugged 127

chris — Tue, 12 Jan 2016 19:07:48 +0000

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We react to Remix OS and give it a go on a few of our machines, discuss the surprise feature in KDE 5.6 & chat with some of the folks behind SCALE 14x.

Plus how to tell family and friends you’re not the Geek Squad, we get our filesystem geek on & using tech support opportunities to be an open source ambassador.

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Follow Up / Catch Up

Snapcraft 1.0 Ubuntu Snappy Creator Tool Officially Released

Canonical’s Snappy team had the great pleasure of announcing the release and immediate availability for download of the Snapcraft 1.0 Snappy creator tool for Ubuntu Linux.

KDE Plasma 5.6 to Feature Unity Launcher Support, Media Controls in Task Manager

Let’s start with the Uni__ty Launcher support, as it would appear that KDE Plasma 5.6 will borrow the Unity API from Canonical’s Ubuntu Linux operating system to implement support for app notifications in the Task Manager. For example, the Chromium web browser will display the download progress.

Why do you think btrfs is better than zfs for home use

In ep 399 you talk about how ZFS is more designed for enterprise. While btrfs is more suited for home use. But you never really said why you think that, could you try to explain why you think this?

Semi-Official SCaLE 14x Jupiter Broadcasting thread

Register![1] and use the coupon code LAS40 for a 40% discount; thanks /u/irabinovitch [2] !

SCaLE 14x: The Southern California Linux Expo is upon us again! I’m looking forward to seeing & sharing with everyone in the free software community in Southern California this year; last year was a blast.

SCaLE 14x is January 21-24, 2016 at the Pasadena Convention Center[3]

Linux Action Show Meet Up

Jupiter Broadcasting Meetup Page

UbuCon portal

On the night before the event we will meet at around 19:00 for an informal gathering to get to know each other. Details to be added soon!

TING

Ting – mobile that makes sense

Ilan Rabinovitch and Gareth J. Greenaway on what’s new for SCALE14x

We’re always looking for help! If you would like to volunteer for one of these SCALE committees, please email the committee chair.

Linux Academy

Linux Academy | Linux and AWS Online Training

What’s Remix OS for PC? Remix OS for PC is built on the Android-x86

This is an alpha version intended for developers and early adopters who don’t mind a bug or two.

Android was designed for touchscreens and as there isn’t a touchscreen on most PCs, we want you to be aware that apps may perform differently. We’re asking for developers and testers to help us optimize Remix OS for Android PCs.
Join our Google Group for further discussion or give us your feedback here.We read all your messages and feedback but will not be replying to most due the volume of the feedback.

Remix OS—a multitasking, windowed Android OS—can now run on your PC

We tried Remix OS at the end of a recent article that looked at Android on the desktop. The OS definitely proved nicer than vanilla Android with a mouse and keyboard, but just like with Android tablets, the biggest software weakness is app support for the new environment. Remix actually comes out a little better here, since if you get stuck with a phone app, you can usually just shrink it down to a phone-sized window.

DigitalOcean

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How to tell family/friends you’re not the Geek Squad?

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The post Sorry, I don't do Windows | LINUX Unplugged 127 first appeared on Jupiter Broadcasting.

Kernel of Truth | LINUX Unplugged 113

chris — Tue, 06 Oct 2015 17:38:07 +0000

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Performance tips for keeping your Linux install running like new, some basic tricks & some advanced tips.

Why Microsoft’s new Surface Book might be able to run Linux & we reflect on the larger issues behind the recent public exits from the Linux Kernel development team & more!

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Rover Electrical Upgrade | Rover Log 10

Feedback:

A World Without Linux | The Linux Foundation

World Without Linux Episode #1: What’s the Name of That Song?

Remembering who sings your favorite song is a lot harder without Linux.

N1 Is A Beautiful Open Source Email App for Linux – OMG! Ubuntu!

N1 is a new open source e-mail app from Created by Nylas Inc., built using React, Flux, and Electron.

Like a web-browser or modern text editor, N1 is designed to be built on and improved through extensions.

Rover Log

TING

Ting – mobile that makes sense

Surface Book – The ultimate laptop

Ultra-thin, meticulously crafted, with incredible screen resolution. This is the ultimate laptop.

Hands On: Microsoft Surface Book | PCMag.com

The latching mechanism has a wide electrical connector, no doubt PCIe-based to facilitate communication between the GPU and the rest of the system.

DigitalOcean

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Keeping Linux Performing Well.

Tips and tricks for keeping your Linux box in top performance.

If you gotta swap, swap on a sep disk

Creating your swap files on a separate disk can also help quite a bit, especially if your machine swaps frequently. It happens if you do not have enough RAM for your environment. Using KDE with all the features and applications that come along may require several GiB of memory, whereas a tiny window manager with console applications will perfectly fit in less than 512 MiB of memory.

XFS – ArchWiki

Although the extent-based nature of XFS and the delayed allocation strategy it uses significantly improves the file system’s resistance to fragmentation problems, XFS provides a filesystem defragmentation utility (xfs_fsr, short for XFS filesystem reorganizer) that can defragment the files on a mounted and active XFS filesystem. It can be useful to view XFS fragmentation periodically.

Is it REALLY worth Tuning your IO scheduler?

The kernel supports different schedulers for storage disk in-/output (IO). These are the CFQ scheduler (Completely Fair Queuing), the NOOP and Deadline. Another, the BFQ (Budget Fair Scheduler) is available in the linux-zen kernel.

A HDD has spinning disks and head that move physically to the required location. Such structure leads to following characteristics:

random latency it quite high, for modern HDD it is ~10ms (ignoring a disk controller write buffer).
sequential access provides much higher throughput. In this case head needs to move less distance.

In case if we have a lot of running processes that make IO requests to different parts of storage (i.e. random access) then we can expect that a disk handles ~100 IO requests per second. Because modern systems can easily generate load much higher than 100 requests per second we have a queue of requests that have to wait for access to the storage. One way to improve throughput is to linearize access, i.e. order waiting requests by its logical address and always choose the closest request. Historically this was the first Linux IO scheduler called elevator scheduler.

One of the problems with the elevator algorithm is that it makes suffer processes with sequential access. Such processes read a block of data then process it for several microseconds then read next block and so on. The elevator scheduler does not know that the process is going to read another block nearby and, thus, moves to another request at some other location. To overcome the problem anticipatory IO scheduler was added. For synchronous requests this algorithm waits for a short amount of time before moving to another request.

While these schedulers try to improve total throughput they also might leave some unlucky requests waiting for a very long time.

Linux Academy

Linux Academy | Linux and AWS Online Training

Going my own way

In the end it’s a mixture of just being tired of dealing with the crap associated with Linux development and realising that by continuing to put up with it I’m tacitly encouraging its continuation, but I can’t be bothered any more. And, thanks to the magic of free software, it turns out that I can avoid putting up with the bullshit in the kernel community and get to work on the things I’m interested in doing. So here’s a kernel tree with patches that implement a BSD-style securelevel interface. Over time it’ll pick up some of the power management code I’m still working on, and we’ll see where it goes from there. But, until there’s a significant shift in community norms on LKML, I’ll only be there when I’m being paid to be there. And that’s improved my mood immeasurably.

Closing a door | The Geekess

I am no longer a part of the Linux kernel community.

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Using GNU Stow to manage your dotfiles

The post Kernel of Truth | LINUX Unplugged 113 first appeared on Jupiter Broadcasting.