Kernel with BFQ patch [updated to 3.6.10] + cyrillic support

[Kurlon]

I've bumped linux-kirkwood to 3.5.4 and added the BFQ patch. Note, CFQ is still the default IO scheduler, so if you want to use BFQ you'll need to use a script/etc to change it at startup, or alter your boot setup to specify it as a kernel arg.

[moonman]

I am on your kernel now. Had to add "elevator=bfq" to [kern|usb|sata]_custom_params in Uboot environemnt so that bfq is default now. Thanks Kurlon.

[pepedog]

Moonman, can you write something short on what bfq patch is, gains, and what the options are, please.
Also argue why elevator=bfq should be default for all.
I am too lazy/old to research
Thanks

[moonman]

Under load it has better latency accessing the hard drive compared to CFQ. Have you maybe noticed when your plug is doing something, your samba speed drops (given that CPU isn't maxed out). I've noticed that when Transmission is downloading something, I get 10-15MB/s over samba. With BFQ I get 15-25MB/s.

It is really work load dependant. Some people won't notice any difference, some people will. You don't have to enable it globally.Try it. It won't screw anything up.

[sambul13]

Transmission loads CPU quite high due to frequent writes to disk. I don't know, how you can stably speedup Samba transfers under such load. But the BFQ app sounds very useful to me.

[WarheadsSE]

It's not an app. It's a disk scheduler.

[moonman]

$this->bbcode_second_pass_quote('sambul13', 'T')ransmission loads CPU quite high due to frequent writes to disk. I don't know, how you can stably speedup Samba transfers under such load. But the BFQ app sounds very useful to me.

[moonman]

Kurlon, what's reason for enabling preemption in the kernel?

[Kurlon]

Other than it's enabled in the base core/linux pkgbuild I based linux-kirkwood on?

...

I got nothing.

[pepedog]

Yes, seems to be the thing to be done.
@moonman, I am about to look at making new rootfs for several devices, all pure systemd.
Along the way I looked at your uboot thing http://archlinuxarm.org/forum/viewtopic.php?f=18&t=3355#p19457
So you need an edit as BFQ is included in linux-kirkwood now?