Linux Pro Magazine #221 - Print Issue

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Issue #221: Monitoring Performance – Hunting for bottlenecks that slow down your system

As computers get more powerful and computer applications get bigger and more ungainly, users end up with the same question no matter how many times they upgrade: How do I make the most of my system resources by tuning up system performance? This month we explore some tools that offer a window into the performance and health of your Linux system: Netdata and perf.

Other highlights include:
* Steam Proton – this Wine fork running within the Steam Play gaming system provides a seamless way to run Windows games on Linux.
* Gnome Boxes – an easy interface for configuring and managing KVM virtualization.
* Linux Voice – Check out the latest installment in our series on Bash scripting – this time with the emphasis on flow control.

On the DVD: System Rescue CD and MX Linux 64 bit

Linux Pro Magazine #221 - Print Issue

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News
* Linux Kernel Continues to Offer Mitigation for Spectre Mitigation
* SpeakUp Trojan Targets Linux Servers
* KDE Plasma 5.15 Beta Arrives
* Canonical Announces Latest Ubuntu Core for IoT
* Vulnerabilities Found in Cisco Routers
* Two New Malware Campaigns
* US Government Shutdown Ties Up $139.2 Million in Grant Funding

Kernel News
* Considering Plan 9 Extensions for Type Conversion
* Supporting Heterogeneous Systems
* Optimizing CPU Idle States

Netdata
What cannot be measured cannot be improved. Netdata lets you measure almost anything – at least as long as it's about the performance and health of a Linux computer.

perf
The kernel supports performance analysis with built-in tools via the Linux performance counters subsystem. Perf is easy to use and offers a detailed view of performance data.

Command Line – unison
Unison is a handy tool for file syncing, backups, and merging. To get the most out of unison, however, you need to perfect your preference files.

Gnome Boxes
In the past, using virtual machines required expensive programs such as VMware or open source add-ons such as VirtualBox. Today, many distributions offer native support for virtual machines through Gnome Boxes.

Charly's Column – sudoers
"I've seen penguins that can type better than that." If you give sudo the wrong password, you deserve to be shouted at – says Charly. He is not exempt from the insult and sees it as an opportunity to raise sudoing awareness.

Kraft
If you're running a small company, and you can't seem to keep up on invoices, orders, and other business documents, time to have a look at Kraft.

Programming Snapshot – Go
Go comes with an image-processing toolkit. Mike Schilli explains how to walk through a photo's pixels to detect the foreground by comparing values against a threshold and shows how to manipulate the original by creating a nice looking silhouette.

RabbitMQ
Connect multiple protocols and servers together on your IoT†projects.

Open Hardware – Electronic Voting
In a quest for better voting machines, open hardware might hold the answers.

Smartphone Pi Display
A simple Python program turns a disused smartphone into a wirelessly connected Raspberry Pi display.

This month in LinuxVoice.

Doghouse – Computing Costs
Fifty years ago, limitations in computing had more to do with cost than know-how; maddog takes us back to 1969.

Pixelitor
Pixelitor offers the basic functions of a full-fledged image editing program, along with some useful filters and a few pitfalls.

Network Basics – The ip Command
Network commands like ifconfig and route are still popular with users even though they are far past their prime. Their successor, ip, provides the capabilities of several legacy tools with a single, unified syntax.

FOSSPicks
This month Graham fires up MuseScore 3.0, hexyl, weborf, Chrono, and several other useful Linux tools.

Tutorials – Shell Scripting
Knowing the right shell commands might be all the artificial intelligence you need to make your computer work for you.

Tutorials – Natron
Tracking is good for stabilizing video clips, and it helps you put stuff in scenes that wasn't there in the first place.

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