daimin created HDFS-16403:
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Summary: Improve FUSE IO performance by supporting FUSE parameter
max_background
Key: HDFS-16403
URL: https://issues.apache.org/jira/browse/HDFS-16403
Project: Hadoop HDFS
Issue Type: Improvement
Components: fuse-dfs
Affects Versions: 3.3.1, 3.3.0
Reporter: daimin
Assignee: daimin
When we examining the FUSE IO performance on HDFS, we found that the
simultaneous IO requests number are limited to a fixed number, like 12. This
limitation makes the IO performance on FUSE client quite unacceptable. We did
some research on this and inspired by the article [Performance and Resource
Utilization of FUSE User-Space File
Systems|https://dl.acm.org/doi/fullHtml/10.1145/3310148], clearly the FUSE
parameter '{{{}max_background{}}}' decides the simultaneous IO requests number,
which is 12 by default.
We add 'max_background' to fuse_dfs mount options, the FUSE kernel will take
effect when an option value is given.
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