BFQ Scheduler Will Try To Go Mainline In The Linux Kernel

[phoronix]

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

[roberth]

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

[AnAkIn]

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

[roberth]

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.

[kokoko3k]

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!

[roberth]

What's this new io queuing layer? Link please?
Thanks!

*Multi-Queue Block Layer

http://www.phoronix.com/scan.php?page=news_item&px=MTUxNDQ

[kokoko3k]

Thank you.

[AnAkIn]

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.

[jwilliams]

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

[blackout23]

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.