Ivan Andika created HDDS-15183:
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Summary: Use POSIX_FADV_DONTNEED after container replication
Key: HDDS-15183
URL: https://issues.apache.org/jira/browse/HDDS-15183
Project: Apache Ozone
Issue Type: Improvement
Reporter: Ivan Andika
This is simply an idea.
Container replications currently still use buffered writes, meaning that it
still occupies the page cache. This can cause page cache pollution.
We can consider using POSIX_FADV_DONTNEED
(https://man7.org/linux/man-pages/man2/posix_fadvise.2.html) after container
replication so that the OS can free this page caches immediately.
Of course, we need to check whether the initial claim is correct and whether
this is actually beneficial to prevent premature optimization.
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