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Type:
Improvement
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Resolution: Fixed
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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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None
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(copied to CRM)
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8
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Storage Engines 2019-09-09, Storage Engines 2019-09-23, Storage Engines 2019-10-07, Storage Engines 2019-10-21, Storage Engines 2019-11-04, Storage Engines 2019-11-18
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v4.2, v4.0, v3.6
In workloads where there are a lot of open data handles, it can be disruptive to other application operations while a checkpoint gathers the set of handles that need to be included in the checkpoint. This is called the prepare phase of a checkpoint (see __checkpoint_prepare).
I crafted a wtperf workload that uses 30,000 tables with a reasonably light insert workload. I see a lot of the time in checkpoints being spent doing configuration parsing. We should review whether it's possible to reduce the amount of time doing configuration parsing.
- causes
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WT-5239 Fix syscall failure about metadata file open
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- Closed
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- is related to
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- Closed
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- related to
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WT-5262 Create Genny workload to measure the overhead of checkpoint configuration parsing
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- Closed
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