Workloads that insert a large value, and then do many WT_CURSOR->modify operations to make many small updates to the value while holding the oldest transaction/timestamp pinned can generate very large pages in cache, and force us to regularly re-write the page via lookaside.
Which leads to effectively pinning the cache full.
We could do better by decreasing how often we instantiate a full value in such workloads, so there is less memory pinned in cache.
- causes
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WT-4115 Valgrind error in est_wt4105_large_doc_small_upd
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- Closed
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- is depended on by
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- Closed
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- related to
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- Closed
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WT-4107 Reduce lookaside usage in update heavy workloads where history is pinned
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- Closed
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