HackMD
Multiprocessor Scheduling
Asymmetric multiprocessing
- Handle all scheduling decision by a single processor
Symmetric multiprocessing
- Each processor is self-scheduling
Cache
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最近被存取的資料會被暫存到processor 的cache
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如果process移動到另一個processor，cache的資料需要重新產生
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The contents of cache memory must be invalidated for the processor being migrate from
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SMP systems
- soft affinity
- hard affinity
Load balancing
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Keep the workload balanced among all processor
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Push migration
- 平均分配(push/moving)給processor
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Pull migration
- 沒事做的processor會從忙碌的processor抓task過來
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不論是把一個process push或pull到一另一個processor都會失去cache memory的效益
last edit
dotMon, Jan 6, 2020 3:21 PM
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