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Type: Bug
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Resolution: Done
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Priority: Major - P3
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None
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Affects Version/s: 4.0.9
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Component/s: Performance, WiredTiger
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Labels:None
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Environment:Ubuntu 16.04 LTS, AWS i3.16xl
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ALL
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Hi, we're seeing periodic slow queries in our mongo logs for queries on _id and is indexed. We recently made lots of effort on trimming down our database size as well as index size and synced a new replica set so compaction happened, our indexes now should fit in memory but we are still seeing poor performance on basic queries.
Attached you can find our diagnostics data