Wei-Chiu Chuang created HDDS-12319:
--------------------------------------
Summary: fileTable directoryTable cache hit rate extremely low
Key: HDDS-12319
URL: https://issues.apache.org/jira/browse/HDDS-12319
Project: Apache Ozone
Issue Type: Improvement
Reporter: Wei-Chiu Chuang
Attachments: Screenshot 2025-02-12 at 3.30.08 PM.png, Screenshot
2025-02-12 at 3.30.33 PM.png, Screenshot 2025-02-12 at 3.37.55 PM.png,
Screenshot 2025-02-12 at 3.38.13 PM.png
I have access to a production cluster. Looking at the fileTable and
directoryTable cache metrics, I realized both of them have very low hit rate.
If the numbers are correct, that means the cache doesn't make much difference:
fileTable
table_cache_metrics_hit_count 3524
table_cache_metrics_miss_count 2564436740
hit ratio: 0.00013741809%
directoryTable
table_cache_metrics_hit_count 22190417
table_cache_metrics_miss_count 8684501508
hit ratio: 0.255517452%
bucket table and volume table cache are usually hit though
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
