Linux 4.16 To Feature More BFQ Optimizations
Written by Michael Larabel in Linux Storage on 7 January 2018 at 06:51 AM EST. Add A Comment
For fans of the BFQ I/O scheduler, more improvements for it are coming with Linux 4.16.

Linaro's Paolo Valente had his latest feature updates for the Budget Fair Queueing (BFQ) I/O scheduler pulled in to the block subsystem's "-next" tree, a few weeks ahead of the Linux 4.16 merge window.

In digging through the commits, among the interesting changes:

block, bfq: let a queue be merged only shortly after starting I/O - This should yield a 3~4% throughput boost depending on the processor.

block, bfq: increase threshold to deem I/O as random - Better throughput for some workloads.

block, bfq: consider also past I/O in soft real-time detection - Should help in select cases like LibreOffice start-up time on some systems.

And there are various other improvements and optimizations to find with the block code for the upcoming Linux 4.16.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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