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BFQ Scheduler Will Try To Go Mainline In The Linux Kernel

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  • BFQ Scheduler Will Try To Go Mainline In The Linux Kernel

    Phoronix: BFQ Scheduler Will Try To Go Mainline In The Linux Kernel

    The developers behind the BFQ I/O scheduler are preparing patches to try to mainline the scheduler within the upstream Linux kernel...

    http://www.phoronix.com/vr.php?view=MTYyNDU

  • #2
    I find this scheduler meaningless after I started using xfs on my system partitions and when kernel 3.13 brought the io queuing layer.

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    • #3
      Originally posted by roberth View Post
      I find this scheduler meaningless after I started using xfs on my system partitions and when kernel 3.13 brought the io queuing layer.
      Maybe you should check the benchmarks on 3.13 http://algo.ing.unimo.it/people/paol...ed/results.php

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      • #4
        Originally posted by AnAkIn View Post
        Maybe you should check the benchmarks on 3.13 http://algo.ing.unimo.it/people/paol...ed/results.php
        I use an ssd for system partitions, and the benchmark shows no gain with bfq and ssds AFAICT.

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        • #5
          Originally posted by roberth View Post
          I find this scheduler meaningless after I started using xfs on my system partitions and when kernel 3.13 brought the io queuing layer.
          What's this new io queuing layer? Link please?
          Thanks!

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          • #6
            Originally posted by kokoko3k View Post
            What's this new io queuing layer? Link please?
            Thanks!
            *Multi-Queue Block Layer

            http://www.phoronix.com/scan.php?pag...tem&px=MTUxNDQ

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            • #7
              Thank you.

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              • #8
                Originally posted by roberth View Post
                I use an ssd for system partitions, and the benchmark shows no gain with bfq and ssds AFAICT.
                Look again, it does for startup times.

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                • #9
                  Finally a usable, low-latency I/O scheduler for linux. I hope the kernel developers get this merged ASAP.

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                  • #10
                    Originally posted by AnAkIn View Post
                    Look again, it does for startup times.
                    What surprises me is that from my experience BFQ makes the boot up take longer. I tested this on my system with SSD and checked the startup time with systemd-analyze with and without "elevator=bfq" as kernel line parameter. Takes a good second longer to boot.

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