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A New Log-Structured Linux Caching Software Driver

Linux Kernel

Published on 04 September 2013 12:18 AM EDT
Written by Michael Larabel in Linux Kernel
6 Comments

While it didn't make it as part of the initial staging pull for the Linux 3.12 merge window, on Sunday dm-writeboost was proposed for staging. DM-Writeboost is new log-structured Linux caching software.

DM-Writeboost batches incoming random writes so that when writing to a cache device it will write out as a large sequential write. There's already DM-Cache and Bcache for the Linux kernel but DM-Writeboost focuses on "bursty writes" and for maximizing the life of solid-state drives (SSDs) by using sequential writes.

More details on DM-Writeboost can be found via the Linux kernel mailing list post and its attached 3,600 lines of new code for the Linux kernel.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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