BFQ Still Trying To Replace The CFQ I/O Scheduler In Linux

[phoronix]

Phoronix: BFQ Still Trying To Replace The CFQ I/O Scheduler In Linux

For a number of months there's been an effort to replace the CFQ I/O scheduler with BFQ inside the Linux kernel. That isn't happening for the current Linux 4.8 cycle, but new patches were published today in pursuing this goal...

http://www.phoronix.com/scan.php?page=news_item&px=BFQ-V8-Replacing-CFQ

[cl333r]

Thanks for posting this, I was stuck on Fedora with Linux 4.5 because I'm using BFQ and it only supported version 4.5. If you're running Linux on an HDD you gotta try BFQ. No glitches found so far.

Apparently your link is broken:

http://lkml.iu.edu/hypermail/linux/kernel/1607.3/02456.html

[cj.wijtmans]

Not sure but deadline works just fine for SSDs. I am using it anyway.

[SaucyJack]

Yeah, it's because of articles like this I laugh my ass off when Torvalds says that 'I want the desktop'. If Torvalds gave a single fuck about the desktop the linux kernel would have had BFQ and BFS long ago.

[stqn]

Great news! Next, BFS!

[nils_]

Great news! Next, BFS!

There is probably virtue in having the Process scheduler exchangeable as well like I/O schedulers. HPC workloads probably need another type of scheduler for example.

[Pepec9124]

Yeah, it's because of articles like I laugh my ass off when Torvalds says that 'I want the desktop'. If Torvalds gave a single fuck about the desktop the linux kernel would have had BFQ and BFS long ago.

BFQ will replace CFQ in kernel soon, no need to be a dick to Linus. CFQ will be transformed into BFQ to be exact.

[Guest]

Not sure but deadline works just fine for SSDs. I am using it anyway.

If I copy something from my network share, my computer crawls to a halt basically with Deadline if I try doing anything else. It did this on my HDD and SSD. I haven't really tried anything to tweak deadline, but this behavior is pretty consistent across different distros.

[davidbepo]

someone has updated bfs vs cfs benchmarks?
the newest i found are from 2012 and a lot has changed since then

[rabcor]

For some reason I found that no-op was providing me more responsive experiences on android smart phones than CFQ.

But I thought bfq was more centered around like unicore setups?... was that misinformation?