diff options
author | Dan McDonald <danmcd@joyent.com> | 2020-09-22 10:39:49 -0400 |
---|---|---|
committer | Dan McDonald <danmcd@joyent.com> | 2020-09-22 10:39:49 -0400 |
commit | 267e12a7d9bf6e5fcefb9cc00f46bfff0dc5226e (patch) | |
tree | 19a3941920d0039c35d53a5cbee189b5ca51995a /usr/src/man/man4/ts_dptbl.4 | |
parent | 517abc5c668925e6092495bf332233c3599980d2 (diff) | |
parent | e9faba760cdf80d7dfa110fe0830917ab94668c2 (diff) | |
download | illumos-joyent-vpc.tar.gz |
Merge branch 'master' into vpcvpc
Diffstat (limited to 'usr/src/man/man4/ts_dptbl.4')
-rw-r--r-- | usr/src/man/man4/ts_dptbl.4 | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/usr/src/man/man4/ts_dptbl.4 b/usr/src/man/man4/ts_dptbl.4 index f6e7db3482..9dbcc11d15 100644 --- a/usr/src/man/man4/ts_dptbl.4 +++ b/usr/src/man/man4/ts_dptbl.4 @@ -7,8 +7,6 @@ .SH NAME ts_dptbl \- time-sharing dispatcher parameter table .SH DESCRIPTION -.sp -.LP The process scheduler (or dispatcher) is the portion of the kernel that controls allocation of the \fBCPU\fR to processes. The scheduler supports the notion of scheduling classes where each class defines a scheduling policy, used @@ -65,9 +63,11 @@ only member of the \fBts_dptbl\fR which cannot be changed with The length of the time quantum allocated to processes at this level in ticks (\fBhz\fR). .sp -In the high resolution clock mode (\fBhires_tick\fR set to \fB1\fR), the value -of \fBhz\fR is set to \fB1000\fR. Increase quantums to maintain the same -absolute time quantums. +In the default high resolution clock mode (\fBhires_tick\fR set to \fB1\fR), +the value of \fBhz\fR is set to \fB1000\fR. If this value is overridden to +\fB0\fR then \fBhz\fR will instead be \fB100\fR; the number of ticks per +quantum must then be decreased to maintain the same length of quantum in +absolute time. .RE .sp @@ -129,8 +129,6 @@ scheduling classes. There are two methods available for doing this: reconfigure with a loadable module at boot-time or by using \fBdispadmin\fR(1M) at run-time. .SS "ts_dptbl Loadable Module" -.sp -.LP The \fBts_dptbl\fR can be reconfigured with a loadable module which contains a new time sharing dispatch table. The module containing the dispatch table is separate from the TS loadable module which contains the rest of the @@ -140,8 +138,6 @@ scheduling priorities used by the time-sharing and inter-active classes. The relevant procedure and source code is described in the \fBREPLACING THE TS_DPTBL LOADABLE MODULE\fR section. .SS "dispadmin Configuration File" -.sp -.LP With the exception of \fBts_globpri\fR all of the members of the \fBts_dptbl\fR can be examined and modified on a running system using the \fBdispadmin\fR(1M) command. Invoking \fBdispadmin\fR for the time-sharing or inter-active class @@ -177,7 +173,6 @@ parameters for time-sharing level 0, the second line specifies the parameters for time-sharing level 1, etc. There must be exactly one line for each configured time-sharing priority level. .SH EXAMPLES -.LP \fBExample 1 \fRA Sample From a Configuration File .sp .LP @@ -435,8 +430,6 @@ ts_getmaxumdpri() .in -2 .SH SEE ALSO -.sp -.LP \fBpriocntl\fR(1), \fBdispadmin\fR(1M), \fBpriocntl\fR(2), \fBsystem\fR(4) .sp .LP @@ -445,8 +438,6 @@ ts_getmaxumdpri() .LP \fIProgramming Interfaces Guide\fR .SH NOTES -.sp -.LP \fBdispadmin\fR does some limited sanity checking on the values supplied in the configuration file. The sanity checking is intended to ensure that the new \fBts_dptbl\fR values do not cause the system to panic. The sanity checking |