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Date: Mon, 11 May 2020 11:39:28 +0300
From: "Anton V. Boyarshinov" <boyarsh@altlinux.org>
To: "Yuriy Al. Shirokov" <yuriy.shirokov@gmail.com>
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Cc: ALT Linux Community general discussions <community@lists.altlinux.org>
Subject: Re: [Comm] JACK, /proc/sys/kernel/sched_rt_runtime_us,
 CONFIG_RT_GROUP_SCHED
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=D0=9F=D1=80=D0=B8=D0=B2=D0=B5=D1=82!

> =D0=92 P9 =D1=81 =D1=8F=D0=B4=D1=80=D0=BE=D0=BC std-def =D0=B4=D0=B5=D0=
=BC=D0=BE=D0=BD jackd =D0=BD=D0=B5 =D0=BC=D0=BE=D0=B6=D0=B5=D1=82 =D0=B7=D0=
=B0=D0=B4=D0=B5=D0=B9=D1=81=D1=82=D0=B2=D0=BE=D0=B2=D0=B0=D1=82=D1=8C RT-=
=D1=84=D0=B8=D1=87=D0=B8
> =D0=BF=D0=BB=D0=B0=D0=BD=D0=B8=D1=80=D0=BE=D0=B2=D1=89=D0=B8=D0=BA=D0=B0:=
 =D0=BF=D0=B8=D1=88=D0=B5=D1=82
> Cannot create RT messagebuffer thread: Operation not permitted (1)
>=20
> =D0=92 =D1=82=D0=B0=D0=BA=D0=BE=D0=BC =D1=80=D0=B5=D0=B6=D0=B8=D0=BC=D0=
=B5 Ardour (=D1=80=D0=B0=D0=B4=D0=B8 =D0=BA=D0=BE=D1=82=D0=BE=D1=80=D0=BE=
=D0=B3=D0=BE =D1=8F =D0=B8 =D0=B7=D0=B0=D0=BF=D1=83=D1=81=D0=BA=D0=B0=D1=8E=
 jackd) =D1=80=D0=B0=D0=B1=D0=BE=D1=82=D0=B0=D1=82=D1=8C =D0=BE=D1=82=D0=BA=
=D0=B0=D0=B7=D1=8B=D0=B2=D0=B0=D0=B5=D1=82=D1=81=D1=8F.

=D0=94=D0=BE=D0=B2=D0=BE=D0=BB=D1=8C=D0=BD=D0=BE =D1=81=D1=82=D1=80=D0=B0=
=D0=BD=D0=BD=D0=B0=D1=8F =D0=B8=D1=81=D1=82=D0=BE=D1=80=D0=B8=D1=8F. =D0=AF=
 =D1=81=D0=B0=D0=BC =D1=80=D0=B5=D0=B3=D1=83=D0=BB=D1=8F=D1=80=D0=BD=D0=BE =
=D0=B8=D1=81=D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D1=83=D1=8E =D0=B8=D1=81=D0=BF=
=D0=BE=D0=BB=D1=8C=D0=B7=D1=83=D1=8E =D1=81=D0=B2=D1=8F=D0=B7=D0=BA=D1=83
jackd+ardour =D0=BD=D0=B0 =D0=BD=D0=B0=D1=88=D0=B8=D1=85 =D1=8F=D0=B4=D1=80=
=D0=B0=D1=85 (=D0=B2=D0=BE=D1=82 =D0=B8 =D1=81=D0=B5=D0=B3=D0=BE=D0=B4=D0=
=BD=D1=8F, =D0=BD=D0=B0=D0=BF=D1=80=D0=B8=D0=BC=D0=B5=D1=80) =D0=B8 =D0=BD=
=D0=B5 =D1=81=D1=82=D0=B0=D0=BB=D0=BA=D0=B8=D0=B2=D0=B0=D1=8E=D1=81=D1=8C =
=D1=81
=D1=82=D0=B0=D0=BA=D0=BE=D0=B9 =D0=BF=D1=80=D0=BE=D0=B1=D0=BB=D0=B5=D0=BC=
=D0=BE=D0=B9. Jackd =D0=BF=D0=B8=D1=88=D0=B5=D1=82, =D1=87=D1=82=D0=BE =D0=
=B7=D0=B0=D0=BF=D1=83=D1=81=D1=82=D0=B8=D0=BB=D1=81=D1=8F =D1=81 Realtime P=
riority 20 =D0=B8
=D0=B2=D1=81=D1=91 =D1=80=D0=B0=D0=B1=D0=BE=D1=82=D0=B0=D0=B5=D1=82.=20

> =D0=AD=D1=82=D0=BE =D0=BB=D0=B5=D1=87=D0=B8=D1=82=D1=81=D1=8F =D0=BA=D0=
=BE=D0=BC=D0=B0=D0=BD=D0=B4=D0=BE=D0=B9
> sudo sysctl -w kernel.sched_rt_runtime_us=3D-1
> =D0=BD=D0=BE =D0=B2=D1=80=D1=8F=D0=B4 =D0=BB=D0=B8 =D1=8D=D1=82=D0=BE =D1=
=88=D1=82=D0=B0=D1=82=D0=BD=D1=8B=D0=B9 =D1=81=D0=BF=D0=BE=D1=81=D0=BE=D0=
=B1 =D0=B7=D0=B0=D1=81=D1=82=D0=B0=D0=B2=D0=B8=D1=82=D1=8C jackd =D1=80=D0=
=B0=D0=B1=D0=BE=D1=82=D0=B0=D1=82=D1=8C.
>=20
> =D0=A0=D0=B0=D1=81=D1=81=D0=BA=D0=B0=D0=B6=D0=B8=D1=82=D0=B5, =D0=BF=D0=
=BE=D0=B6=D0=B0=D0=BB=D1=83=D0=B9=D1=81=D1=82=D0=B0, =D0=BA=D0=B0=D0=BA =D1=
=88=D1=82=D0=B0=D1=82=D0=BD=D0=BE =D0=B7=D0=B0=D0=BF=D1=83=D1=81=D0=BA=D0=
=B0=D1=82=D1=8C =D0=BF=D1=80=D0=B8=D0=BB=D0=BE=D0=B6=D0=B5=D0=BD=D0=B8=D1=
=8F =D0=B2=D1=80=D0=BE=D0=B4=D0=B5 jackd =D0=B2
> =D1=8F=D0=B4=D1=80=D0=B5, =D1=81=D0=BE=D0=B1=D1=80=D0=B0=D0=BD=D0=BD=D0=
=BE=D0=BC =D1=81 CONFIG_RT_GROUP_SCHED=3Dy.

=D0=94=D0=B0=D0=B2=D0=B0=D0=B9 =D0=BF=D0=BE=D0=BF=D1=80=D0=BE=D0=B1=D1=83=
=D0=B5=D0=BC =D0=BD=D0=B0=D0=B9=D1=82=D0=B8 10 =D0=BE=D1=82=D0=BB=D0=B8=D1=
=87=D0=B8=D0=B9 =D0=B2 =D0=BD=D0=B0=D1=88=D0=B8=D1=85 =D0=BA=D0=BE=D0=BD=D1=
=84=D0=B8=D0=B3=D1=83=D1=80=D0=B0=D1=86=D0=B8=D1=8F=D1=85... =D0=97=D0=B0=
=D0=BF=D1=83=D1=81=D1=82=D0=B8 =D1=87=D1=82=D0=BE
=D0=BB=D0=B8 jackd =D0=BF=D0=BE=D0=B4 strace =D0=B8 =D0=BF=D1=80=D0=B8=D1=
=88=D0=BB=D0=B8 =D0=BC=D0=BD=D0=B5 =D0=B2=D1=8B=D0=B2=D0=BE=D0=B4...

=D0=A5=D0=BE=D1=82=D1=8F, =D0=BD=D0=B0=D0=B2=D0=B5=D1=80=D0=BD=D0=BE=D0=B5,=
 =D0=BC=D0=BE=D0=B6=D0=BD=D0=BE =D0=B8 =D0=BE=D0=BF=D1=86=D0=B8=D1=8E =D0=
=B2=D1=8B=D0=BA=D0=BB=D1=8E=D1=87=D0=B8=D1=82=D1=8C, =D0=B5=D1=81=D0=BB=D0=
=B8 =D0=BD=D0=B8=D0=BA=D1=82=D0=BE =D0=B7=D0=B0 =D0=BD=D0=B5=D1=91 =D1=81=
=D0=B5=D0=B9=D1=87=D0=B0=D1=81 =D0=BD=D0=B5
=D0=B2=D1=81=D1=82=D1=83=D0=BF=D0=B8=D1=82=D1=81=D1=8F...