Distributions [LWN.net]
December 1, 2010 This article was contributed by Nathan Willis CentOS, the "community enterprise" operating system rebuilt from the source packages of Red Hat Enterprise Linux (RHEL), recently started development on its next release, CentOS 6. The beginning of the process has not been smooth, however, with the development team talking about restructuring its package repository layout and installat
SELinux and PostgreSQL: a worthwhile union? [LWN.net]
When your editor was in Tokyo recently, he had the privilege to talk with KaiGai Kohei at some length about the SE-PgSQL patch set. This work, developed by KaiGai for the last two years or so, integrates SELinux with the PostgreSQL database manager, enabling fine-grained control over access to data stored within a database. The SE-PgSQL patch has struggled to get into the PostgreSQL mainline; it i
PostgreSQL 8.4 Beta [LWN.net]
The first beta of Version 8.4 of the world's most advanced open source database, PostgreSQL, was just released by the PostgreSQL Global Development Group. After fourteen months of development, 8.4 is ready for testing by PostgreSQL users all over the world in order to make it our best release ever. 8.4 includes hundreds of patches and dozens of new features. Among them: * Windowing Functions * Com
That massive filesystem thread - LWN.net
Long, highly-technical, and animated discussion threads are certainly not unheard of on the linux-kernel mailing list. Even by linux-kernel standards, though, the thread that followed the 2.6.29 announcement was impressive. Over the course of hundreds of messages, kernel developers argued about several aspects of how filesystems and block I/O work on contemporary Linux systems. In the end (your ed
Re: [RFC] Convert builin-mailinfo.c to use The Better String Library. [LWN.net]
On Wed, 5 Sep 2007, Dmitry Kakurin wrote: > > When I first looked at Git source code two things struck me as odd: > 1. Pure C as opposed to C++. No idea why. Please don't talk about portability, > it's BS. *YOU* are full of bullshit. C++ is a horrible language. It's made more horrible by the fact that a lot of substandard programmers use it, to the point where it's much much easier to generate tot
The lockless page cache [LWN.net]
One of the biggest problems in kernel development is dealing with concurrency. In a system where more than one thing can be happening at once, one must always take care to keep multiple threads of control from interfering with each other and corrupting the system as a whole. In the same way that two roads become more dangerous when they intersect, connecting two or more processors to the same memo
Multiqueue networking [LWN.net]
One of the fundamental data structures in the networking subsystem is the transmit queue associated with each device. The core networking code will call a driver's hard_start_xmit() function to let the driver know that a packet is ready for transmission; it is then the driver's job to feed that packet into the hardware's transmit queue. The result is a data structure which looks vaguely like this:
Tracing: no shortage of options [LWN.net]
LWN.net needs you!Without subscribers, LWN would simply not exist. Please consider signing up for a subscription and helping to keep LWN publishing Three weeks ago, LWN looked at the renewed interest in dynamic tracing, with an emphasis on SystemTap. Tracing is a perennial presence on end-user wishlists; it remains a handy tool for companies like Sun Microsystems, which wish to show that their off
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The end of the road for the Nexus One [LWN.net]
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implement smarter atime updates support, v2 [LWN.net]
Re: [PATCH 00/23] per device dirty throttling -v8 [LWN.net]