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

Android/Google Leftovers

3 open source alternatives to Office 365

It can be hard to get away from working and collaborating on the web. Doing that is incredibly convenient: as long as you have an internet connection, you can easily work and share from just about anywhere, on just about any device. The main problem with most web-based office suites—like Google Drive, Zoho Office, and Office365—is that they're closed source. Your data also exists at the whim of large corporations. I'm sure you've heard numerous stories of, say, Google locking or removing accounts without warning. If that happens to you, you lose what's yours. So what's an open source advocate who wants to work with web applications to do? You turn to an open source alternative, of course. Let's take a look at three of them. Read more

Hackable voice-controlled speaker and IoT controller hits KS

SeedStudio’s hackable, $49 and up “ReSpeaker” speaker system runs OpenWrt on a Mediatek MT7688 and offers voice control over home appliances. The ReSpeaker went live on Kickstarter today and has already reached 95 percent of its $40,000 funding goal with 29 days remaining. The device is billed by SeedStudio as an “open source, modular voice interface that allows us to hack things around us, just using our voices.” While it can be used as an Internet media player or a voice-activated IoT hub — especially when integrated with Seeed’s Wio Link IoT board — it’s designed to be paired with individual devices. For example, the campaign’s video shows the ReSpeaker being tucked inside a teddy bear or toy robot, or attached to plant, enabling voice control and voice synthesis. Yes, the plant actually asks to be watered. Read more

Security News