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Domain: kerneltrap.com
Stories and comments across the archive that link to kerneltrap.com.
Stories · 22
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Tuning Linux VM swapping
Lank writes "Kernel developers started discussing the pros and cons of swapping to disk on the Linux Kernel mailing list. KernelTrap has coverage of the story on their homepage. Andrew Morton comments, 'My point is that decreasing the tendency of the kernel to swap stuff out is wrong. You really don't want hundreds of megabytes of BloatyApp's untouched memory floating about in the machine. Get it out on the disk, use the memory for something useful.' Personally, I just try to keep my memory usage below the physical memory in my machine, but I guess that's not always possible..." -
Linux 2.4 VM Documentation
popoutman writes "Mel Gorman has announced the availability of a guide to the 2.4 kernel VM including a walkthrough of the VM code. Anyone interested in obtaining a solid understanding of the Linux 2.4 VM will certainly want to take a look at this documentation. Mel says that the effort is at least several weeks from being finished, but that he's releasing it now with the hopes of getting feedback to be sure he's on the right track. He also notes that the 2.5 VM is still too much of a moving target for him to document it just yet." See also a Kerneltrap story. -
Interview with Kernel Hacker Robert Love
An anonymous reader writes: "An interview with the ever interesting Robert Love is at KernelTrap. Robert is author of the kernel preemption patch which has been merged into the 2.5 development kernel. In this interview, Robert discusses the status of Linux kernel preemption, talks about his recent involvement with the O(1) scheduler and explains his recent VM overcommit work. He also reflects upon Linus' use of Bitkeeper, the future of Linux, and the recent Kernel Summit in Ottawa. A Good Read." -
Linus Does Not Scale
EmilEifrem writes: "Seems like everybody's getting more and more frustrated by Linus' (in-) ability to handle patches. Rob Landley just wrote an "RFC on Penguin Patch Management" wherein he proposes a "Penguin Patch Lieutenant" system that he believes would scale better. The full discussion can be found on the Linux kernel mailing list. Linus seems to dislike it, as usual, source code maintenance tools/organization are for wimps!, but a lot of others find it a good idea. Anyway, it's a very good read." -
KernelTrap Interview With Alan Cox
Jeremy writes "KernelTrap has spoken with Linux guru Alan Cox. He is perhaps the second most influental Linux kernel hacker, next only to Linus. In this interview he talks about himself, his history with computers and Linux, working for Red Hat, Marcello and the 2.4 kernel, the DMCA, the future of Linux and much more." -
KernelTrap Interview With Alan Cox
Jeremy writes "KernelTrap has spoken with Linux guru Alan Cox. He is perhaps the second most influental Linux kernel hacker, next only to Linus. In this interview he talks about himself, his history with computers and Linux, working for Red Hat, Marcello and the 2.4 kernel, the DMCA, the future of Linux and much more." -
KernelTrap Interview With Alan Cox
Jeremy writes "KernelTrap has spoken with Linux guru Alan Cox. He is perhaps the second most influental Linux kernel hacker, next only to Linus. In this interview he talks about himself, his history with computers and Linux, working for Red Hat, Marcello and the 2.4 kernel, the DMCA, the future of Linux and much more." -
FreeBSD Guru Matt Dillon Interviewed
Jeremy writes: "KernelTrap has interviewed Matthew Dillon, a well-known FreeBSD kernel hacker. He has recently been in the spotlight due to many impressive NFS related bug fixes, as well as fixes to the TCP stack. In this interview he talks about these bug fixes as well as his history with computers, programming and FreeBSD. He also discusses Linux, open source, embedded systems, the Amiga (and his DICE C compiler), and much more." -
FreeBSD Guru Matt Dillon Interviewed
Jeremy writes: "KernelTrap has interviewed Matthew Dillon, a well-known FreeBSD kernel hacker. He has recently been in the spotlight due to many impressive NFS related bug fixes, as well as fixes to the TCP stack. In this interview he talks about these bug fixes as well as his history with computers, programming and FreeBSD. He also discusses Linux, open source, embedded systems, the Amiga (and his DICE C compiler), and much more." -
FreeBSD Guru Matt Dillon Interviewed
Jeremy writes: "KernelTrap has interviewed Matthew Dillon, a well-known FreeBSD kernel hacker. He has recently been in the spotlight due to many impressive NFS related bug fixes, as well as fixes to the TCP stack. In this interview he talks about these bug fixes as well as his history with computers, programming and FreeBSD. He also discusses Linux, open source, embedded systems, the Amiga (and his DICE C compiler), and much more." -
New Kernel 2.4 Development Branch (-mjc)
Ivo writes: "kerneltrap is reporting: Michael Cohen announced to the lkml his intention to begin a new 2.4 development tree. The first release of his -mjc branch includes a number of performance enhancing patches, including Robert Love's preemptible kernel patch, Rick van Riel's reverse mapping patch and George Anzinger's real time scheduler patch. Michael says of this patch, "I feel that there's need for a rapidly developing '-ac [like]' tree, and so, here we go. Feel free to test it"" -
New Kernel 2.4 Development Branch (-mjc)
Ivo writes: "kerneltrap is reporting: Michael Cohen announced to the lkml his intention to begin a new 2.4 development tree. The first release of his -mjc branch includes a number of performance enhancing patches, including Robert Love's preemptible kernel patch, Rick van Riel's reverse mapping patch and George Anzinger's real time scheduler patch. Michael says of this patch, "I feel that there's need for a rapidly developing '-ac [like]' tree, and so, here we go. Feel free to test it"" -
New Kernel 2.4 Development Branch (-mjc)
Ivo writes: "kerneltrap is reporting: Michael Cohen announced to the lkml his intention to begin a new 2.4 development tree. The first release of his -mjc branch includes a number of performance enhancing patches, including Robert Love's preemptible kernel patch, Rick van Riel's reverse mapping patch and George Anzinger's real time scheduler patch. Michael says of this patch, "I feel that there's need for a rapidly developing '-ac [like]' tree, and so, here we go. Feel free to test it"" -
Interview With Kernel Hacker Dave Jones
A reader writes "Kerneltrap has recently interviewed Dave Jones who currently lives in London, employed by SuSE as a Linux kernel hacker. In the past six months since he graduated from the University of Glamorgan he has gotten involved in an impressive range of kernel related projects, including Powertweak, x86info, OProfile and the Kernel Janitors Project. Additionally, he maintains a -dj patch for the 2.5 development kernel, helping to sync it with the stable 2.4 kernel as well as offering increased stability. " -
Megabytes (MB) or Mebibytes (MiB)?
An anonymous reader says: "KernelTrap has an interesting story about megabytes versus mebibytes. Though the article refers to Linux, the topic is applicable to all computers. Will there be a time when all computer users will talk about adding mibibytes of RAM, rather than a megabytes? From the article: '[the kernel patch] changes references from the familiar MB (megabyte) and GB (gigabyte) to the NIST standard MiB (mebibyte) and GiB (gibibyte). According to these standards, technically a megabyte (MB) is a power of ten, while a mebibyte (MiB) is a power of two, appropriate for binary machines. A megabyte is then 1,000,000 bytes. A mebibyte is the actual 1,048,576 bytes that most intend.'" -
John Levon On KernelNewbies & OProfile
Jeremy Andrews writes: "This week KernelTrap interviews John Levon, the author of OProfile and a contributer to KernelNewbies. He offers much insight into both of these projects, as well as reflecting on Linux in general. OProfile is a statistical x86 profiling system for the 2.4 Linux kernel, useful in understanding what percentage of the CPU is being utilized by different processes, including those in kernel space and those in user space. KernelNewbies is an excellent resource for people looking to understand the Linux kernel, comprised of a web page, an IRC channel, and a mailing list." -
Kernel Hacker Keith Owens On kbuild 2.5, XFS, More
Jeremy Andrews writes: "Kerneltrap interviews Keith Owens this week, an experienced kernel hacker who has long contributed to the Linux kernel. His contributions include updating ksymoops and modutils, both of which he maintains. He also works on kbuild 2.5. Earlier, he built the original Integrated Kernel Debugging patch. He's also working on kdb and XFS. Check out the interview." Lots of good information in here about things to expect in 2.5. -
Kernel Hacker Keith Owens On kbuild 2.5, XFS, More
Jeremy Andrews writes: "Kerneltrap interviews Keith Owens this week, an experienced kernel hacker who has long contributed to the Linux kernel. His contributions include updating ksymoops and modutils, both of which he maintains. He also works on kbuild 2.5. Earlier, he built the original Integrated Kernel Debugging patch. He's also working on kdb and XFS. Check out the interview." Lots of good information in here about things to expect in 2.5. -
ARM Linux And Russell King Interview
Jeremy Andrews writes: "Kerneltrap has posted the latest in-depth kernel hacker interview with Russell King, who originally ported Linux to ARM and continues to oversee ARM Linux development. Russell talks about ARM, the 2.4 kernel, the upcoming 2.5 kernel and much more..." -
ARM Linux And Russell King Interview
Jeremy Andrews writes: "Kerneltrap has posted the latest in-depth kernel hacker interview with Russell King, who originally ported Linux to ARM and continues to oversee ARM Linux development. Russell talks about ARM, the 2.4 kernel, the upcoming 2.5 kernel and much more..." -
ARM Linux And Russell King Interview
Jeremy Andrews writes: "Kerneltrap has posted the latest in-depth kernel hacker interview with Russell King, who originally ported Linux to ARM and continues to oversee ARM Linux development. Russell talks about ARM, the 2.4 kernel, the upcoming 2.5 kernel and much more..." -
Preemptible Linux Kernel: Interviews and Info
An anonymous submitter sends: "MontaVista and Robert Love are developing a patch for the Linux kernel to make it fully preemptible. Lots of users are involved, and tests show huge reductions in latency. Robert's kernel patches are here. Finally, an interview with Robert, on preemption and more."