Yuan Tian created IOTDB-796:
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Summary: Cache Lock will be a bottleneck of querying while the
contention is heavy
Key: IOTDB-796
URL: https://issues.apache.org/jira/browse/IOTDB-796
Project: Apache IoTDB
Issue Type: Improvement
Components: Core/Engine
Reporter: Yuan Tian
Assignee: Yuan Tian
Attachments: image-2020-07-15-16-29-11-325.png
While the contention is heavy, the global lock in cache will be bottleneck of
querying.
I do a test: 20 clients to do query simultaneously and find that most time is
wasted on the waiting for the lock of chunk cache.
!image-2020-07-15-16-29-11-325.png!
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