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An eBPF overview, part 5: Tracing user processes

May 14, 2019 by Adrian Ratiu  |   Blog

Up until now, talking in-depth about userspace tracing was deliberately avoided because it merits special treatment, hence this part devoted to it. We'll now look at the why of it, and we'll examine eBPF user tracing in two categories: static and dynamic.

An eBPF overview, part 5: Tracing user processes

Linux Kernel 5.1

May 09, 2019 by André Almeida  |   News & Events

Earlier this week, Linux Kernel 5.1 was released, and with it came over 13,000 commits from developers all around the world, including Collaborans. This time around, no less than 12 different developers contributed commits (64), sign-offs (111) & more.

Linux Kernel 5.1

CEF on Wayland upstreamed

May 08, 2019 by Santosh Mahto  |   Blog

After a successful team effort, the patch enabling the Chromium Embedded Framework (CEF) Ozone builds to run with different platform backends, such as Wayland, has finally landed upstream.

CEF on Wayland upstreamed

Collabora & GStreamer 1.16

May 06, 2019 by Aaron Boxer  |   News & Events

After a year-long development cycle, the much anticipated release was made available recently. With it came a number of exciting new features we're especially proud of, including per-element latency tracer and support for planar or non-interleaved audio.

Collabora & GStreamer 1.16

An eBPF overview, part 4: Working with embedded systems

May 06, 2019 by Adrian Ratiu  |   Blog

Now that we've studied the mainstream way of developing and using eBPF programs on top of the low-level VM mechanisms, we'll look at projects taking different approaches, attempting solutions to some of the unique problems faced by embedded Linux.

An eBPF overview, part 4: Working with embedded systems

Running Android and Wayland on embedded devices

May 02, 2019 by Robert Foss  |   Blog

A previous post introduced the SPURV Android compatibility layer for Wayland based Linux environment. In this post, we're going to dig into how you can run an Android application on the very common i.MX6 based Nitrogen6_MAX board.

Running Android and Wayland on embedded devices

An eBPF overview, part 3: Walking up the software stack

April 26, 2019 by Adrian Ratiu  |   Blog

In part 1 and 2 of this series, we took a condensed in-depth look at the eBPF VM. In part 3, we define the high-level components of an eBPF program, including the backend, loader, frontend and data structures.

An eBPF overview, part 3: Walking up the software stack

GStreamer buffer flow analyzer

April 25, 2019 by Guillaume Desmottes  |   Blog

GStreamer's logging system is an incredibly powerful ally when debugging but it can sometimes be a bit daunting to dig through the massive amount of generated logs. I often find myself writing small scripts processing gst logs when debugging.

GStreamer buffer flow analyzer

Weston debugging and tracing on-the-fly

April 24, 2019 by Marius Vlad  |   Blog

The recent release of version 6 of the Weston compositor has brought with it the weston-debug protocol, a new feature that allows developers and users alike to display on-the-fly various debugging (logging) information generated by the compositor.

Weston debugging and tracing on-the-fly

Quick hack: git-pw

April 18, 2019 by Ezequiel Garcia  |   Blog

A well-known Linux kernel developer once said, a poor craftsman famously complains about his tools, but a good craftsman knows how to choose excellent tools. Here's a python-based tool that integrates git and patchwork, and can greatly improve your toolbox.

Quick hack: git-pw

An eBPF overview, part 2: Machine & bytecode

April 15, 2019 by Adrian Ratiu  |   Blog

The second part of this series takes a more in-depth look at the eBPF VM and program studied in the first part. Having this low level knowledge is not mandatory but can be a very useful foundation for the rest of the series.

An eBPF overview, part 2: Machine & bytecode

GStreamer support for the RIST Specification

April 09, 2019 by Nicolas Dufresne  |   News & Events

Collabora contributes elements implementing the RIST Simple Profile to GStreamer. This specification adds retransmissions to RTP streams in a way that it compatible with existing broadcast encoders and decoders.

GStreamer support for the RIST Specification

Debian Jessie on Raspberry Pi 2

February 03, 2015 by Sjoerd Simons  |   Blog

Debian Jessie running on Raspberry Pi 2

Debian Jessie on Raspberry Pi 2

WebKit on the new Raspberry Pi 2

February 02, 2015 by Marco Barisione  |   Blog

Raspberry PI 2 release announcement!

WebKit on the new Raspberry Pi 2

A checklist for writing pkg-config files

December 09, 2014 by Philip Withnall  |   Blog

Differences between pkg-config variables, the use of AX_PKG_CHECK_MODULES, and what to include in custom variables. automake and autoconf snippets are provided

A checklist for writing pkg-config files

Recent improvements in libnice

October 31, 2014 by Philip Withnall  |   Blog

libnice upstream improvements done at Collabora

Recent improvements in libnice

Introduction to ICE and libnice

October 31, 2014 by Philip Withnall  |   Blog

Introductory talk on libnice (done as part of Collabora's tea time training)

Introduction to ICE and libnice

Collabora contributions to the Linux kernel 3.17

October 11, 2014 by Javier Canillas  |   Blog

Collabora contributions to the Linux kernel 3.17

Collabora contributions to the Linux kernel 3.17

Improving the security of D-Bus

October 06, 2014 by Alban Crequy  |   Blog

Eight security issues were discovered, fixed and attributed a CVE.

Improving the security of D-Bus

Dynamic relocs, runtime overflows and -fPIC

October 01, 2014 by Philip Withnall  |   Blog

A discussion of dynamic relocation, position independent code, the -fPIC flag and how it affects generated assembly. The focus would be on the practical implications of it all, including when to (and when not to) use -fPIC.

Dynamic relocs, runtime overflows and -fPIC

A web browser for the Raspberry Pi

September 01, 2014 by Marco Barisione  |   Blog

Collabora has been working with the Raspberry Pi Foundation on various projects including a web browser optimised for the Raspberry Pi. Since the first beta release we have made huge improvements; now the browser is more responsive, it’s faster, and…

A web browser for the Raspberry Pi

GStreamer gains V4L2 Mem-2-Mem support

August 27, 2014 by Nicolas Dufresne  |   Blog

A team at Samsung (and many core Linux contributors) started adding new type of drivers to the Linux Media Infrastructure API (also known as Video4Linux 2).

GStreamer gains V4L2 Mem-2-Mem support

Wayland on MALI

August 13, 2014 by Daniel Stone  |   Blog

Predictable media latency, low power usage and vastly improved A/V sync. Wayland versus X11 explained on ARM MALI

Wayland on MALI

Raspberry Pi custom box design.

July 16, 2014 by Vince Sanders  |   Blog

It is no great secret that my colleagues at Collabora have been doing work with the Raspberry Pi Foundation.

Raspberry Pi custom box design.

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