Table 1 Parameter setting
From: Research on recovery strategy in embedded real-time main memory databases
Parameter | Meaning | Default value | Domain |
|---|---|---|---|
num_imo | Image data object number | 250 | 50~500 |
num_deo | Derived data object number | 250 | 50~500 |
num_ino | Invariant data object number | 500 | 200~1000 |
per_short | Short time limited data ratio | 20% | 0~40 % |
vi | Time series data validate time | 50ms | 5ms~10s |
δ | Time series data state change threshold | 10% | 0~20 % |
period | Period of periodic transaction | 50ms | 5ms~10s |
generation_ratio | Periodic transaction generating ratio | 20/s | 5~50/s |
trigger_ratio | MT trigger ratio | 5/s | 2~10/s |
update_number | Update number | 2 | 1~3 |
num_actions | Action number | 3 | 1~5 |
update_mode | Update mode | Hybrid | Deferred/immediate/hybrid |