In January, researchers disclosed flaws in speculative execution known as Meltdown and Spectre. Oracle published official guidance in this support note:...
In January, researchers disclosed flaws in speculative execution known as Meltdown and Spectre. Oracle published official guidance in this support note: Responding to the Spectre and Meltdown vulnerabilities (CVE-2017-5715, CVE-2017-5753, and CVE-2017-5754) in Oracle Linux and Oracle VM on Oracle X86 Servers (Doc ID 2370398.1) At that time, we shipped mitigations for these security issues which depended on special Intel microcode. We're excited to announce that our latest...
In January, researchers disclosed flaws in speculative execution known as Meltdown and Spectre. Oracle published official guidance in this support note: Responding to the Spectre and...
Shannon Nelson is a Linux kernel driver expert and kernel developer who has been looking at accelerating IPsec performance. In this blog blog post, he shows how...
Shannon Nelson is a Linux kernel driver expert and kernel developer who has been looking at accelerating IPsec performance. In this blog blog post, he shows how to reduce the overhead of running with IPsec enabled. IPsec has been gaining in popularity, but is quite a hit against network throughput, making multi-Gigabit network connections slow to Megabit speeds. With support for IPsec hardware offload recently added to the Linux kernel's network stack, Oracle has added...
Shannon Nelson is a Linux kernel driver expert and kernel developer who has been looking at accelerating IPsec performance. In this blog blog post, he shows how to reduce the overhead of running...
The source for UEK has always been available at oss.oracle.com, as a git repository with full git history. Starting now, we'll also be posting the UEK source on...
The source for UEK has always been available at oss.oracle.com, as a git repository with full git history. Starting now, we'll also be posting the UEK source on github.com/oracle/linux-uek. By doing so, we intend to increase the visibility for our work and to make it even easier for people to access the source for UEK. We will also use this repository for working with developers at partner companies and in the Linux community. The repository contains the source for the...
The source for UEK has always been available at oss.oracle.com, as a git repository with full git history. Starting now, we'll also be posting the UEK source on github.com/oracle/linux-uek. By doing...
In this post from Alan Maguire, he shows how to use DTrace to inspect common network-related system calls. DTrace is a powerful tracing tool for understanding...
In this post from Alan Maguire, he shows how to use DTrace to inspect common network-related system calls. DTrace is a powerful tracing tool for understanding user and kernel processes. We've been steadily adding DTrace support for networking in Oracle Linux. Let's see how we can use these probes to better understand network behaviour. Let's do a quick tour to see what sort of support is available for dynamic tracing the network stack. Before diving into the details though,...
In this post from Alan Maguire, he shows how to use DTrace to inspect common network-related system calls. DTrace is a powerful tracing tool for understanding user and kernel processes. We've been...
This update on btrfs development comes from Liu Bo, an Oracle Linux Kernel developer and key upstream btrfs contributor. The btrfs community continues to...
This update on btrfs development comes from Liu Bo, an Oracle Linux Kernel developer and key upstream btrfs contributor. The btrfs community continues to thrive. In 2017, btrfs had key developers from Fujitsu, Facebook, Oracle and SuSE, as well as contributions from several NAS companies. The primary use cases for btrfs fall into two categories: single disk btrfs for '/' and '/home' and multiple disk btrfs for NAS-type workloads. Over the past year, stabilizing btrfs has been...
This update on btrfs development comes from Liu Bo, an Oracle Linux Kernel developer and key upstream btrfs contributor. The btrfs community continues to thrive. In 2017, btrfs had key developers from...
Kernel developers Knut Omang and Alan Maguire collaborate on the new project KTF. Available on github, KTF is an extensible framework for doing better testing...
Kernel developers Knut Omang and Alan Maguire collaborate on the new project KTF. Available on github, KTF is an extensible framework for doing better testing and validation for Linux developers. As Knut likes to remind us, test-driven-development can work even for writing new device drivers -- because he did just that on his previous project! Kernel Test Framework (KTF) is a unit test framework we have developed to make it easier to test internal and external programming...
Kernel developers Knut Omang and Alan Maguire collaborate on the new project KTF. Available on github, KTF is an extensible framework for doing better testing and validation for Linux developers. As...
Steve Sistare is a kernel development architect at Oracle. In this blog post, he gives tips and tricks for making your systems boot faster. In October Pasha...
Steve Sistare is a kernel development architect at Oracle. In this blog post, he gives tips and tricks for making your systems boot faster. In October Pasha Tatashin shared his work on booting the kernel substantially faster, especially for large systems: However, booting the kernel is only part of the job, as services must also be be started in userland. That time can be significant and depends on the configuration. Oracle Linux is configured to satisfy a wide range of...
Steve Sistare is a kernel development architect at Oracle. In this blog post, he gives tips and tricks for making your systems boot faster. In October Pasha Tatashin shared his work on booting the...
RDS is the open source Reliable Datagram Sockets protocol developed by Oracle and contributed to the Linux kernel. Kernel developer Ka-Cheong Poon writes the...
RDS is the open source Reliable Datagram Sockets protocol developed by Oracle and contributed to the Linux kernel. Kernel developer Ka-Cheong Poon writes the following about his work to make the RDS code ipv6 capable. Currently, RDS can only work between peers using IPv4 address. As IPv6 deployment is increasing around the world, the need to have RDS working between peers using IPv6 address is becoming more and more important. We have updated Oracle Linux RDS to support...
RDS is the open source Reliable Datagram Sockets protocol developed by Oracle and contributed to the Linux kernel. Kernel developer Ka-Cheong Poon writes the following about his work to make the...
Upstream XFS Maintainer and kernel developer for Oracle Linux, Darrick Wong, wrote up this retrospective on a year's worth of work on XFS, and hints at some...
Upstream XFS Maintainer and kernel developer for Oracle Linux, Darrick Wong, wrote up this retrospective on a year's worth of work on XFS, and hints at some great features which are coming up in the latest Linux kernels. I'm really excited about online filesystem checking. Over the past year, we've spent the bulk of our time stabilizing the new reverse mapping and reflink features that were introduced in Linux 4.8-4.9 and covered in last year's entry on this blog. We are...
Upstream XFS Maintainer and kernel developer for Oracle Linux, Darrick Wong, wrote up this retrospective on a year's worth of work on XFS, and hints at some great features which are coming up in...
