Kernel Log: Coming in 3.10 (Part 2)
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.
- Login or register to post comments
- Printer-friendly version
- 1963 reads
- PDF version
More in Tux Machines
- Highlights
- Front Page
- Latest Headlines
- Archive
- Recent comments
- All-Time Popular Stories
- Hot Topics
- New Members
digiKam 7.7.0 is releasedAfter three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. |
Dilution and Misuse of the "Linux" Brand
|
Samsung, Red Hat to Work on Linux Drivers for Future TechThe metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. |
today's howtos
|
Recent comments
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago