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CFS调度器之虚拟时钟...

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gatieme
2016-06-29 14:18:18 +08:00
parent 12c78e1d3c
commit f0b3bf0b11
1 changed files with 2 additions and 2 deletions
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study/kernel/01-process/05-schedule/04-cfs/02-vruntime/README.md
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@@ -131,8 +131,8 @@ $$ delta =delta \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight} ;(if curr.
| 条件 | 公式 |
|:-------:|:-------:|
| curr.nice != NICE_0_LOAD | $$curr->vruntime += delta\_exec \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight} (if )$$ |
| curr.nice == NICE_0_LOAD | $$ curr->vruntime += delta $$ |
| curr.nice != NICE_0_LOAD | $curr->vruntime += delta\_exec \times \dfrac{NICE\_0\_LOAD}{curr->se->load.weight} (if )$ |
| curr.nice == NICE_0_LOAD | $ curr->vruntime += delta $ |
在该计算中可以派上用场了, 回想一下子,　可知越重要的进程会有越高的优先级(即, 越低的nice值), 会得到更大的权重, 因此累加的虚拟运行时间会小一点,