| sched_ule.4 (144759) | sched_ule.4 (147432) |
|---|---|
| 1.\" Copyright (c) 2005 Robert N. M. Watson 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 1.\" Copyright (c) 2005 Robert N. M. Watson 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" |
| 25.\" $FreeBSD: head/share/man/man4/sched_ule.4 144759 2005-04-07 21:57:19Z rwatson $ | 25.\" $FreeBSD: head/share/man/man4/sched_ule.4 147432 2005-06-16 18:46:17Z ru $ |
| 26.\" 27.Dd April 7, 2005 28.Os 29.Dt SCHED_ULE 4 30.Sh NAME 31.Nm sched_ule 32.Nd ULE Scheduler 33.Sh SYNOPSIS 34.Cd "options SCHED_ULE" 35.Sh DESCRIPTION | 26.\" 27.Dd April 7, 2005 28.Os 29.Dt SCHED_ULE 4 30.Sh NAME 31.Nm sched_ule 32.Nd ULE Scheduler 33.Sh SYNOPSIS 34.Cd "options SCHED_ULE" 35.Sh DESCRIPTION |
| 36The |
|
| 36.Nm | 37.Nm |
| 38scheduler |
|
| 37is an experimental scheduler that provides a number of advanced scheduler 38features not present in 39.Xr sched_4bsd 4 , 40the default system scheduler. 41These features address SMP and interactivity and include: 42.Pp 43.Bl -bullet -compact -offset indent 44.It --- 5 unchanged lines hidden (view full) --- 50.It 51Interactivity heuristics that detect interactive applications and schedules 52them preferentially under high load. 53.El 54.Pp 55The following sysctls are relevant to the operation of 56.Nm : 57.Bl -tag -width indent | 39is an experimental scheduler that provides a number of advanced scheduler 40features not present in 41.Xr sched_4bsd 4 , 42the default system scheduler. 43These features address SMP and interactivity and include: 44.Pp 45.Bl -bullet -compact -offset indent 46.It --- 5 unchanged lines hidden (view full) --- 52.It 53Interactivity heuristics that detect interactive applications and schedules 54them preferentially under high load. 55.El 56.Pp 57The following sysctls are relevant to the operation of 58.Nm : 59.Bl -tag -width indent |
| 58.It kern.sched.name | 60.It Va kern.sched.name |
| 59This read-only sysctl reports the name of the active scheduler. 60.El 61.Pp | 61This read-only sysctl reports the name of the active scheduler. 62.El 63.Pp |
| 64The |
|
| 62.Nm | 65.Nm |
| 66scheduler |
|
| 63is disabled by default as it is experimental. | 67is disabled by default as it is experimental. |
| 64See the bugs section for more information. | 68See the 69.Sx BUGS 70section for more information. |
| 65.Sh SEE ALSO 66.Xr sched_4bsd 4 , 67.Xr sysctl 8 68.Sh HISTORY 69The 70.Nm 71scheduler first appeared in 72.Fx 5.1 . 73.Sh AUTHORS 74.An Jeff Roberson 75.Aq jeff@FreeBSD.org 76.Sh BUGS 77As an experimental scheduler, 78.Nm 79is not enabled by default due to a number of known issues, including weak 80performance with several known workloads, and reports of instability. 81Deployment of 82.Nm 83in production environments should be done cautiously. | 71.Sh SEE ALSO 72.Xr sched_4bsd 4 , 73.Xr sysctl 8 74.Sh HISTORY 75The 76.Nm 77scheduler first appeared in 78.Fx 5.1 . 79.Sh AUTHORS 80.An Jeff Roberson 81.Aq jeff@FreeBSD.org 82.Sh BUGS 83As an experimental scheduler, 84.Nm 85is not enabled by default due to a number of known issues, including weak 86performance with several known workloads, and reports of instability. 87Deployment of 88.Nm 89in production environments should be done cautiously. |