[SOLVED] CONFIG_SCHED_AUTOGROUP, how to enable?

coralfang · 06-10-2022, 08:40 PM

Had some output from a few games stating that "autogroup scheduling is not enabled in your kernel, so falling back to nice"; however Slackware seems to have this enabled in config-generic-5.18.2.x64:

Code:

CONFIG_SCHED_AUTOGROUP=y

Looking online i see this proc value mentioned to check/toggle it:

Code:

/proc/sys/kernel/sched_autogroup_enabled

However;

Code:

root@darkstar:/usr/src/linux-5.18.2# cat /proc/sys/kernel/sched_autogroup_enabled
cat: /proc/sys/kernel/sched_autogroup_enabled: No such file or directory

How can i enable this?

willysr · 06-10-2022, 09:08 PM

Code:

cat /proc/sys/kernel/sched_autogroup_enabled
1

i'm using generic kernel here....

coralfang · 06-10-2022, 09:51 PM

Quote:

Originally Posted by willysr

Code:

cat /proc/sys/kernel/sched_autogroup_enabled
1

i'm using generic kernel here....

Strange, hmm... i just saw this:
https://lore.kernel.org/lkml/1653907...t2@tip-bot2/T/

Apparently there's a bug in recent kernels. Are you on 5.18.3 ? I'm about to upgrade and see if this fixes it.

EDIT: Updated to 5.18.3, proc file still isn't there...

Petri Kaukasoina · 06-11-2022, 03:15 AM

never mind

willysr · 06-11-2022, 07:24 PM

i'm using 5.17.13 ATM

Petri Kaukasoina · 06-12-2022, 07:13 AM

Quote:

Originally Posted by coralfang

EDIT: Updated to 5.18.3, proc file still isn't there...

That fix is in the stable queue for 5.18.4.

coralfang · 06-12-2022, 08:07 AM

Quote:

Originally Posted by Petri Kaukasoina

That fix is in the stable queue for 5.18.4.

That's good to know thanks. I'll mark this as solved for now.

EDIT:
Working again as of 5.18.5

Code:

> $ cat /proc/sys/kernel/sched_autogroup_enabled                                                                   
1