CONFIG_NO_HZ_FULL Pulled Into Linux 3.10 Kernel
Support for "full dynticks" has been accepted into the mainline Linux 3.10 kernel.
Covered earlier today on Phoronix was the full request for providing full dynticks support for Linux, a.k.a. "CONFIG_NO_HZ_FULL" as the kernel configuration operation is known. As covered earlier, the experimental kernel option benefits workloads where there is just one task running (rather than dynamic ticks when no CPU task is active) and can benefit in the number of timer interrupts generated. For end-users this can benefit real-time latency, HPC computing, and even desktop/mobile workloads.
While Linus Torvalds isn't yet convinced about the benefits of CONFIG_NO_HZ_FULL, he's decided to accept the pull request for Linux 3.10. Linus responded on the kernel mailing list with:
Ok, it seems to work for me, so pulled.There's still some full dynticks improvements planned so hopefully by the time everything is said and done it will lead to performance benefits for a great number of Linux users.
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