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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

Tracing memory leaks in the NFC Digital Protocol stack

November 06, 2017 by Thierry Escande  |   Blog

Kmemleak allows you to track possible memory leaks inside the Linux kernel. Basically, it tracks dynamically allocated memory blocks in the kernel and reports those without any reference left and that are therefore impossible to free.

Tracing memory leaks in the NFC Digital Protocol stack

Who knew we still had low-hanging fruit?

October 17, 2017 by Gustavo Noronha  |   Blog

Earlier this month I had the pleasure of attending the Web Engines Hackfest, hosted by Igalia at their offices in A Coruña, and also sponsored by my employer, Collabora, Google and Mozilla. It has grown a lot and we had many new people this year.

Who knew we still had low-hanging fruit?

Performance analysis in Linux (continued)

October 06, 2017 by Gabriel Krisman Bertazi  |   Blog

In this post, I will show one more example of how easy it is to disrupt performance of a modern CPU, and also run a quick discussion on why performance matters - as well as present a few cases where it shouldn't matter.

Performance analysis in Linux (continued)

XDC 2017 - Links to recorded presentations (videos)

September 23, 2017 by Guy Lunardi  |   Blog

Many thanks to Google for recording all the XDC2017 talks. To make them easier to watch, here are direct links to each talk recorded at XDC2017.

XDC 2017 - Links to recorded presentations (videos)

DebConf 17: Flatpak and Debian

August 17, 2017 by Simon McVittie  |   Blog

Last week, I attended DebConf 17 in Montréal, returning to DebConf for the first time in 10 years (last time was DebConf 7 in Edinburgh). It was great to put names to faces and meet more of my co-developers in person!

DebConf 17: Flatpak and Debian

Android: NXP i.MX6 on Etnaviv Update

July 24, 2017 by Robert Foss  |   Blog

More progress is being made in the area of i.MX6, etnaviv and Android. Since the last post a lot work has gone into upstreaming and stabilizing the etnaviv on Android ecosystem. This has involved Android, kernel and Mesa changes, many of which are available…

Android: NXP i.MX6 on Etnaviv Update

vkmark: more than a Vulkan benchmark

July 18, 2017 by Alexandros Frantzis  |   Blog

Ever since Vulkan was announced a few years ago, the idea of creating a Vulkan benchmarking tool in the spirit of glmark2 had been floating in my mind. Recently, thanks to my employer, Collabora, this idea has materialized! The result is the vkmark Vulkan…

vkmark: more than a Vulkan benchmark

Quick hack: Performance debugging Linux graphics on Mesa

June 29, 2017 by Robert Foss  |   Blog

Debugging graphics performance in a simple and high-level manner is possible for all Gallium based Mesa drivers using GALLIUM_HUD, a feature that adds performance graphs to applications.

Quick hack: Performance debugging Linux graphics on Mesa

Debian armhf VM on arm64 server

June 20, 2017 by Sjoerd Simons  |   Blog

At Collabora one of the many things we do is build Debian derivatives/overlays for customers on a variety of architectures including 32 bit and 64 bit ARM systems. And just as Debian does, our OBS system builds on native systems rather than emulators.

Debian armhf VM on arm64 server

NVMe: Officially faster for emulated controllers!

June 13, 2017 by Helen Koike  |   Blog

The feature to improve NVMe performance over emulated environments has now been officially released in the NVMe Specification Revision 1.3 under the name "Doorbell Buffer Config command", along with an implementation in the mainline Linux kernel!

NVMe: Officially faster for emulated controllers!

Android: NXP i.MX6 Buffer Modifier Support

June 05, 2017 by Robert Foss  |   Blog

GPUs like Intel and Vivante support storing contents of graphical buffers in different formats. Support for describing these formats using modifiers has now been added to Android and Mesa, enabling tiling artifact free running of Android on the iMX6 platform.

Android: NXP i.MX6 Buffer Modifier Support

Collabora contributions to GStreamer 1.12

May 04, 2017 by Olivier Crête  |   Blog

Along with the usual load of memory leaks, crashes and other bugs, Collabora's multimedia team once again contributed a number of improvements across a wide number of areas.

Collabora contributions to GStreamer 1.12

Kernel 6.2: More Rust support for drivers

February 21, 2023 by Daniel Almeida  |   News & Events

With more SoC support, a new V4L2 driver and a new dma-buf locking convention among its contributions, Collabora was one of the most active employers for this latest kernel development cycle.

Kernel 6.2: More Rust support for drivers

GStreamer 1.22: Bigger and better!

February 08, 2023 by Olivier Crête  |   News & Events

Improved support for hardware accelerated video decoders, new GTK+ integration for Wayland rendering, and further Meson enhancements to make GStreamer shine on embedded, Collabora's multimedia team made a number of key contributions for this latest release.

GStreamer 1.22: Bigger and better!

FOSDEM back in full force for 2023

January 20, 2023 by Kara Bembridge  |   News & Events

After two years of hosting the event virtually, Brussels will once again welcome attendees on February 4 & 5 on the old stomping grounds of the ULB Solbosch Campus. Collabora will be presenting 8 different talks, in 7 devrooms as well as on the main track!

FOSDEM back in full force for 2023

Always growing, always evolving

December 29, 2022 by Kara Bembridge  |   News & Events

With only a few months passing since our last new joiner update, it should come as no surprise that the Collabora crowd has expanded yet again. Our flexible disposition affords us an exceptional bunch to onboard when opportunity knocks.

Always growing, always evolving

Faith Ekstrand is a 2022 Khronie Award recipient!

December 19, 2022 by Kara Bembridge  |   News & Events

Contributing to the Vulkan Working Group since 2015, Faith has continues to make a significant impact. Her expertise and diligence has helped to shape the group and we're proud to see his hard work see some well earned spotlight.

Faith Ekstrand is a 2022 Khronie Award recipient!

Kernel 6.1: Multi-generational improvements

December 13, 2022 by AngeloGioacchino Del Regno  |   News & Events

Collabora's contributions include ongoing upstreaming of the RockChip RK3588 and MediaTek Helio X10 (MT6795) SoCs, numerous bug fixes and improvements for Cedrus and Hantro IPs, and memory shrinker support for the VirtIO-GPU driver.

Kernel 6.1: Multi-generational improvements

Wine on Wayland 2022 update: more games, more apps, more fun!

December 12, 2022 by Alexandros Frantzis  |   News & Events

The focus in 2022 was on maturing the Wayland driver and keeping up to date with the Wine upstream internal changes, which involved updating it for the latest internal driver APIs, and making preparations to support WoW64.

Wine on Wayland 2022 update: more games, more apps, more fun!

KernelCI now testing Linux Rust code

December 06, 2022 by Adrian Ratiu  |   News & Events

After waiting in the Linux-next integration tree for about 18 months, the basic Rust infrastructure finally landed in the mainline Linux kernel with the imminent release of v6.1.

KernelCI now testing Linux Rust code

Shifting to open gears for the Automotive Linux Summit

December 01, 2022 by Kara Bembridge  |   News & Events

Coming up next week at the Automotive Linux Summit in Yokohama and virtually, Marius Vlad and Daniel Stone will present the latest on the AGL Wayland compositor, and the current state of graphics virtualization upstream.

Shifting to open gears for the Automotive Linux Summit

Seizing knowledge at Capitole du Libre

November 16, 2022 by Kara Bembridge  |   News & Events

Clear your schedules, this weekend's Capitole du Libre is calling your name for all things open source! Gathering in the "Pink City" of Toulouse, participants are welcome to attend with free admission from November 19 to 20 at the INP-ENSEEIHT.

Seizing knowledge at Capitole du Libre

Fully charged for electronica 2022

November 10, 2022 by Kara Bembridge  |   News & Events

Making our grand debut, Collabora will be attending electronica in Munich for the first time! Diving into the world of electronics alongside the leading examples of the industry, we're excited to partake on all fronts.

Fully charged for electronica 2022

Kernel 6.0: Start of a new series and dawn of Rust

October 14, 2022 by Shreeya Patel  |   News & Events

Collabora's contributions include mainlining the HEVC uAPI, adding VirtIO documentation, upstreaming MediaTek smartphones, and adding support for two new Chromebooks and for the Mali-G57 GPU in the Panfrost kernel driver.

Kernel 6.0: Start of a new series and dawn of Rust

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February 1-2, Brussels, Belgium

 

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