Language Selection

English French German Italian Portuguese Spanish

Kernel Log: Coming in 3.10 (Part 2)

Filed under
Linux

Linux 3.10 will include the "block-layer cache" bcache, which can be used to configure one disk as a cache for another disk; a fast SSD, for example, could be used as a cache for a slower hard drive with more capacity. This kind of SSD cache can speed up access to frequently read data and take on write requests until a quieter moment when they can be written to the slower disk.

Bcache is the work of Kent Overstreet of Google, which has been using the tool to improve productivity for some time now; after dm-cache, which was integrated into Linux 3.9 , it is the second cache framework of this kind to be added to the Linux kernel. As device mapper maintainer Alasdair Kergon pointed out at LinuxTag a month ago, the two solutions work in somewhat different ways, which means that one or the other could be the right choice depending on the situation.

Bcache is designed to be better for situations with several small write operations that can then be transferred to the hard drive in a more orderly fashion. A few developers have tried to benchmark the caching solutions recently (1, 2 and others), often including SSD caching software EnhanceIO, which has not yet been integrated into the Linux kernel.

rest here




More in Tux Machines

today's howtos

Development News

  • KDevelop 5.0.3 Open-Source IDE Improves GitHub Handling Authentication, More
    The development behind the open-source and cross-platform KDevelop IDE (Integrated Development Environment) was proud to announce on the first day of December the availability of the third point release for KDevelop 5.0 stable series. KDevelop 5.0.3 arrives one and a half months after the second maintenance update, but it's a small bugfix release that attempts to patch a total of nine issues reported by users since then. However, it's a recommended update for all users. "We are happy to announce the release of KDevelop 5.0.3, the third bugfix and stabilization release for KDevelop 5.0. An upgrade to 5.0.3 is strongly recommended to all users of 5.0.0, 5.0.1 or 5.0.2," reads the release announcement.
  • PHP 7.1.0
    The PHP development team announces the immediate availability of PHP 7.1.0.
  • PHP 7.1 Makes Its Debut
    This first major update to last year's huge PHP 7.0 release builds several new features on top. Introduced by PHP 7.1 is nullable types, a void return type, a iterable pseudo-type, class constant visibility modifiers, support for catching multiple exception types, and many other language enhancements plus more performance optimizations and other work.

Games for GNU/Linux

OSS Leftovers