By: Jenifer Hopper, working closely with zswap developer: Seth Jennings Updates: Results for the new POWER7+ compression accelerator are provided inline A related article by Seth available on LWN.net: The zswap compressed swap cache With a short article here, we introduce some good work going on in the Linux community for memory compression techniques on a Linux system. A new proposed framework called " zswap " is discussed, with some initial performance data provided to demonstrate the potential benefits for a system... [More]
By Jeff Scheel
As you likely have heard, Arvind Krishna, IBM General Manager for Development and Manufacturing in the IBM Systems & Technology Group, announced that Power Systems would be supporting KVM. This is an exciting announcement for numerous reasons that I'll defer for another posting. For this blog entry, I thought I'd do some question/answer session based on common questions I've been asked in the past couple weeks. However, before I do so, I need to remind you that these are our current... [More]
By: Bill Buros. Within the Linux open-source community, and across the Power systems, there are a number of new, emerging, and in some cases maturing technologies actively being worked on, prototyped, and prepared for enterprise-class deployment. Members of the IBM Linux Technology Center around the world are involved with these projects, collaborating with peers across the open-source community. Over the coming weeks and rolling into next year, here on the PowerLinux Technical Community we plan to begin highlighting these technologies in... [More]
By: Caecilie Hampel . The SAP Enterprise Resource Planning (ERP) software is one of the most popular ERP applications and available on Power Linux since 2004. The combination of SAP ERP and Power Linux has shown market leading benchmark results as well as continous reliability and maintainability. This combination is now also described in a new SAP paper showing a sample SAP architecture on Power Linux. An ERP system setup requires an optimal environment and landscape architecture. Therefore the new SAP on Power Linux reference architecture... [More]
By: Jeff Scheel. A couple weeks ago, someone sent me a link from the developerWorks PowerVM forum about installing Debian on a POWER7 box. The post was created by Tux11 (Dennis Schneck) who graciously agreed to create a developerWorks wiki. Here is the new Debian 6 on Power7 LPAR wiki. I strongly encourage that if you have interest, if you're running Debian today on POWER, or if you would like to doing so in the future, please help Dennis and the community keep this wiki alive and accurate. I cannot THANK him enough for his efforts in... [More]
By: Breno Leitão.
This tutorial explains how to create a RAID device on PowerLinux machines using an array of disks. This step by step tutorial includes identifying the disks, formatting them, combining them in a RAID array, creating a partition and, finally, creating a file system on this partition.
The PowerLinux machines support a RAID (Redundant Array of Independent Disks) card. A RAID card is a device that combines a set of physical disks into a logical... [More]
By: Jeff Scheel. Ever wondered what IBM means when they say "Power Linux"? I get questions all the time like, "How does Power Linux differ from RHEL or SLES?" So, I thought perhaps it might be time to address this in writing, in a common place.
Here's the simple answer: Power Linux generally refers to all supported Linux distributions that run on IBM Power Systems servers. This means that Power Linux includes all Red Hat Enterprise Linux (RHEL) and SUSE Linux Enterprise Server (SLES) versions. We simply say... [More]
By: Brent Baude. On May 11th, Fedora announced a beta for F17 for ppc64. This is another milestone in the march towards Fedora 17 for the powerpc architecture. The beta announcement itself can be found here -> http://fedoraproject.org/wiki/Fedora_17_Beta_PPC_Announcement Yeah, lots of packages have been updated and so forth but there are two interesting pieces I'd like to draw some attention towards. Firstly, adoption of grub2 continues in the beta. We smoothed out some of the rough edges since the alpha timeframe and have a number... [More]
By: Jeff Scheel. Life as the PowerLinux Chief Architect involves answering many questions, some of which need lengthy explanations. One such example is whether PowerLinux is a Power operating system or a Linux operating system. In some ways this discussion reminds me of the campfire scene from the 1986 movie Stand by Me where the boys deeply contemplate Disney characters. Essentially the discussion went this way: Mickey's a mouse, Donald's a duck, Pluto's a dog, what is Goofy? The discussion about PowerLinux generally follows similar flow:... [More]
By: Fabio Dassan dos Santos The IBM Installation Toolkit for PowerLinux goes beyond just trying to speed-up your typical Linux installation, by also delivering an interesting set of tools around system update and recovery. One of the new and noteworthy features for this 5.3 release, the LPAR Cloning and Restoration tool , focuses on extending value in this category by providing a quick and easy way of creating re-usable system images across LPARs. Through very few steps, it is possible to achieve the following with this new tool: Save... [More]
By: Kersten Richter. In the PowerLinux world where the installation choices are seemingly endless, a clear path for installing Linux on a PowerLinux server can be somewhat difficult to find. In late January, Steve Champagne and I (Kersten Richter) traveled to Rochester, Minnesota for our own installation experience. We received an IBM PowerLinux 7R2 (8246-L2C) still in the shipping box. We spent several days exploring various installation scenarios and, based on our experiences, have recently published several resources to use for... [More]
By: Jeff Scheel. I hope you "Think" our Power Linux community is starting to come together. It's taking some time to bring the pieces together, but we're making progress. Since Rome wasn't built in a day, hopefully you'll understand if the Think Power Linux community takes a couple months. Speaking of Rome and building, did you know that IBM's effort with Power Linux is over 10 years old. Yes, I was one of the original team members focused on putting Linux on the iSeries. That mission grew into the ppc64 kernel and glibc that... [More]
By: Beth Taylor and Walt Madden. Several previous blog posts have told of the
advantages of IBM ®
Advance Toolchain for PowerLinux for application performance analysis on IBM
Power Systems ™
servers. Likewise, you've heard about
IBM Software Development Kit for PowerLinux ™ , which combines C/C++ source
development with the Advance Toolchain and classic Linux debugging and
performance analysis tools like OProfile. Recently, the IBM InfoSphere Streams development
team has had the positive experience to give credit to these claims... [More]
By: Jeff Scheel. At the risk of appearing more literate than I actually am, I thought a title reference to Elizabeth Barrett Browning's famous Sonnet 43 How Do I Love Thee? was a great way to introduce the topic for this blog. So, how many ways can we run Linux on IBM Power Systems? Let me count them: Linux can run as the whole system image (single partition, LPAR) on the system with all resources available to it -- processors, memory and I/O adapters. This is the traditional, non-virtualized configuration typical of x86 servers and... [More]
By: Tulio Magno Quites Machado Filho.
The IBM Advance Toolchain for PowerLinux is a set of open source development tools and runtime libraries that allow users to take leading edge advantage of IBM's latest POWER hardware features on Linux.
A new update release for the 7.0 series is now available, and it includes the following:
GDB now ignores VDSO warnings .
GCC fixes for the following issues:
mullw sets condition code incorrectly.
Add documentation... [More]