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Type:
Improvement
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Resolution: Unresolved
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Replication
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None
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Replacing std::multimap<K, V> with std::map<K, std::vector<V>> in Repl waiter lists gives a performance improvement of ~10% on UnfulfilledWaiter tests while being a ~5% performance regression on AddWaiter in a simple POC (raw data):
| test | delta |
| BM_UnfulfilledWaiter/3/1000/min_time:0.050 | 9.26% |
| BM_UnfulfilledMajorityWaiter/3/1000/min_time:0.050 | 10.88% |
| BM_AddWaiter/1000/1/min_time:0.050 | -5.08% |
As in SERVER-90213, no perf workload is affected by this change (perf patch). Nevertheless, it improves upon the work in that ticket.
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- Closed
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