diff options
Diffstat (limited to 'docs/misc/sedf_scheduler_mini-HOWTO.txt')
| -rw-r--r-- | docs/misc/sedf_scheduler_mini-HOWTO.txt | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/docs/misc/sedf_scheduler_mini-HOWTO.txt b/docs/misc/sedf_scheduler_mini-HOWTO.txt index 52e5b6ead3..6742867ac5 100644 --- a/docs/misc/sedf_scheduler_mini-HOWTO.txt +++ b/docs/misc/sedf_scheduler_mini-HOWTO.txt @@ -8,37 +8,37 @@ Overview: uses realtime-algorithms to ensure time guarantees. Usage: - -add "sched=sedf" on Xen's boot command-line - -create domains as usual - -use "xm sched-sedf <dom-id> <period> <slice> <latency-hint> <extra> <weight>" - Where: - -period/slice are the normal EDF scheduling parameters in nanosecs - -latency-hint is the scaled period in case the domain is doing heavy I/O + -add "sched=sedf" on Xen's boot command-line + -create domains as usual + -use "xm sched-sedf <dom-id> <period> <slice> <latency-hint> <extra> <weight>" + Where: + -period/slice are the normal EDF scheduling parameters in nanosecs + -latency-hint is the scaled period in case the domain is doing heavy I/O (unused by the currently compiled version) - -extra is a flag (0/1), which controls whether the domain can run in + -extra is a flag (0/1), which controls whether the domain can run in extra-time - -weight is mutually exclusive with period/slice and specifies another + -weight is mutually exclusive with period/slice and specifies another way of setting a domains cpu slice Examples: - normal EDF (20ms/5ms): - xm sched-sedf <dom-id> 20000000 5000000 0 0 0 + normal EDF (20ms/5ms): + xm sched-sedf <dom-id> 20000000 5000000 0 0 0 - best-effort domains (i.e. non-realtime): - xm sched-sedf <dom-id> 20000000 0 0 1 0 - + best-effort domains (i.e. non-realtime): + xm sched-sedf <dom-id> 20000000 0 0 1 0 + normal EDF (20ms/5ms) + share of extra-time: - xm sched-sedf <dom-id> 20000000 5000000 0 1 0 + xm sched-sedf <dom-id> 20000000 5000000 0 1 0 - 4 domains with weights 2:3:4:2 - xm sched-sedf <d1> 0 0 0 0 2 - xm sched-sedf <d2> 0 0 0 0 3 - xm sched-sedf <d3> 0 0 0 0 4 - xm sched-sedf <d4> 0 0 0 0 2 + 4 domains with weights 2:3:4:2 + xm sched-sedf <d1> 0 0 0 0 2 + xm sched-sedf <d2> 0 0 0 0 3 + xm sched-sedf <d3> 0 0 0 0 4 + xm sched-sedf <d4> 0 0 0 0 2 - 1 fully-specified (10ms/3ms) domain, 3 other domains share - available rest in 2:7:3 ratio: - xm sched-sedf <d1> 10000000 3000000 0 0 0 - xm sched-sedf <d2> 0 0 0 0 2 - xm sched-sedf <d3> 0 0 0 0 7 - xm sched-sedf <d4> 0 0 0 0 3 + 1 fully-specified (10ms/3ms) domain, 3 other domains share + available rest in 2:7:3 ratio: + xm sched-sedf <d1> 10000000 3000000 0 0 0 + xm sched-sedf <d2> 0 0 0 0 2 + xm sched-sedf <d3> 0 0 0 0 7 + xm sched-sedf <d4> 0 0 0 0 3 |