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Linux Kernel News Archives

Improving The Linux Kernel's Memory Performance

Over the past few days there's been an active discussion on the Linux kernel mailing list surrounding the memory copy (the memcpy function to copy blocks of memory) performance within the kernel. In particular, an application vendor claims to have boosted their application (a video recorder) performance by 12% when implementing an "optimized" memory copy function that takes advantage of SSE3.
16 August 2011 - Memcpy - 33 Comments

New Plans For Linux Long-Term Kernel Releases

Greg Kroah-Hartman has laid out his plans this morning for handling Linux kernel releases in the future that will be supported for the long-term. The proposal is quite simple and is not handled radically different from now with regards to kernel releases that are maintained for extended periods of time.
15 August 2011 - -Longterm Kernels

Linux 3.1-rc2 Is A Fairly Calm Release

Linus Torvalds released the Linux 3.1-rc2 kernel on Sunday afternoon. There isn't too much to see and Linus notes that this is a fairly calm release for coming just one week after the close of the Linux 3.1 kernel merge window.
14 August 2011 - Not Much - 4 Comments

Linux 3.1-rc1 Kernel: A "Pretty Normal Release"

Linus Torvalds officially released the Linux 3.1-rc1 kernel on Sunday afternoon, following the 3.1 merge window being open for more than two weeks.
8 August 2011 - New Kernel - 2 Comments

RapidDisk, A New Linux RAM Disk Kernel Module

Released last month was RapidDisk 1.0, which is a Linux kernel module that up to this point has received little attention on the Internet. RapidDisk is a new Linux RAM disk kernel module like the brd and zram modules, but with a different feature-set.
4 August 2011 - RapidDisk 1.0 - 5 Comments

The DRM Pull For The Linux 3.1 Kernel

David Airlie has called upon Linus Torvalds to pull in his DRM Git tree that offers the key Direct Rendering Manager graphics driver improvements for the Linux 3.1 kernel.
26 July 2011 - Exciting

Open-Source CPU Architecture Pulled Into Linux 3.1 Kernel

The latest feature to be pulled into the Linux 3.1 kernel is support for OpenRISC, an open-source CPU architecture.
25 July 2011 - OpenRISC Linux - 14 Comments

Linux 3.0 Real-Time Kernel Released

After not being updated for a few mainline kernel release cycles, the real-time (RT) Linux kernel has been updated against the Linux 3.0 kernel release.
23 July 2011 - RT Kernel - 7 Comments

Linux 3.0 Kernel Has Been Christened

Officially marking the introduction of Linux 3.x, Linus Torvalds this evening announced the official release of Linux 3.0.
22 July 2011 - New Version - 22 Comments

Oracle Just Bought Out Ksplice

Oracle's latest acquisition is that of Ksplice Inc, the company behind the software to apply updates to the Linux kernel in real-time without requiring a system reboot or other downtime. "Never Reboot Linux For Security Updates," as Ksplice says.
21 July 2011 - Linux Updates - 15 Comments

Preparing For The Linux 3.1 Kernel

Linus Torvalds is expected to release the Linux 3.0 kernel today. He has announced that the last-minute bugs that held up the Monday release should be addressed and he's preparing for the Linux 3.1 kernel merge window to be opened.
21 July 2011 - New Release

Linux 3.0-rc7 Kernel Released; One Last Hit?

While it looked like the Linux 3.0 kernel was near based upon last week's Linux 3.0-rc6 release, Linus Torvalds has decided to do one last release candidate based upon last minute changes.
11 July 2011 - Release Candidate - 4 Comments

Linux 3.0-rc6 Kernel: Space Aliens & Drugs

Linus Torvalds released the Linux 3.0-rc6 yesterday in celebration of Independence Day in the United States. It includes a new driver that has received praise and Linus believes it's due to "space aliens are secretly testing their happy drugs on Christoph."
5 July 2011 - The New Kernel

DRM Changes Coming Up For Linux 3.1 Kernel

There's still a few more weeks left until the Linux 3.0 kernel will be officially released, but there are already some changes worth looking forward to with the Linux 3.1 kernel as it pertains to the Direct Rendering Manager drivers.
5 July 2011 - Direct Rendering Manager - 22 Comments

A Generic AMP/IPC Framework For Linux

Being proposed by Ohad Ben-Cohen for integration into the mainline Linux kernel is a generic AMP/IPC framework. This a-symmetric multi-processing (AMP) framework with inter-process communication (IPC) integration makes it possible to control remote processors and communicate messages with these remote processors. This work is the primary target of modern SoC devices.
28 June 2011 - A-Symmetric Multi-Processing - 6 Comments

Linux 3.0-rc5 Kernel Release Brings Various Fixes

Linus Torvalds has released the Linux 3.0-rc5 kernel on this Monday evening. Around 25% of the changes in this week's release candidate are driver related while file-system changes account for nearly half and the rest of the work is scattered throughout.
27 June 2011 - Bug-Fixes - 3 Comments

Burning Through Power: Linux Regressions Found

For the multiple Linux kernel power regressions that I've talked about on Phoronix now for a number of weeks and have been affecting mobile Linux users en mass, I said I was looking for a better power measuring approach by using an AC power meter / UPS rather than a notebook battery to use in nailing these regressions. Using such a power meter would lead to a fully-automated process by the Phoronix Test Suite as no longer would I need to keep pulling the power plug from a laptop, could use much faster hardware, and allow for some other interesting possibilities. Well, last week I bought a power meter that plays with Linux. So now there's some news to share.
26 June 2011 - Jaaaaaaa - 90 Comments

Torvalds: User-Space File-Systems, Toys, Misguided People

Yesterday I mentioned what Anton Altaparmakov of Tuxera had recently said about their NTFS kernel driver being the fastest Linux file-system, which erupted into a large debate in our forums. Within that mailing list thread was also another interesting comment by Linus Torvalds. "Userspace filesystem? The problem is right there. Always has been. People who think that userspace filesystems are realistic for anything but toys are just misguided."
25 June 2011 - FUSE Hatred - 46 Comments

Linux 3.0-rc4 Fixes A Couple Performance Regressions

Linus Torvalds has announced the release of the Linux 3.0-rc4 kernel.
21 June 2011 - And More - 4 Comments

The Linux Kernel Power Issues Continues To Bite Users

The Linux kernel power regressions in the Linux 2.6.38 where I was the first to largely document and prove would cause major power problems in Ubuntu 11.04 and other Linux distributions, continues to bite plenty of mobile users.
12 June 2011 - Bad Bugs - 34 Comments

973 Linux Kernel news articles published on Phoronix.
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