Charles Connell created HBASE-28485:
---------------------------------------
Summary: Re-use ZstdDecompressCtx/ZstdCompressCtx for performance
Key: HBASE-28485
URL: https://issues.apache.org/jira/browse/HBASE-28485
Project: HBase
Issue Type: Improvement
Reporter: Charles Connell
Assignee: Charles Connell
The zstd documentation recommends re-using context objects when possible,
because their creation has some expense. They can be more cheaply reset than
re-created. In ZstdDecompressor and ZstdCompressor, we create a new context
object for every call to decompress() and compress(). In CPU profiles I've
taken at my company, the constructor of ZstdDecompressCtx can sometimes
represent 10-25% of the time spent in zstd decompression, which itself is 5-10%
of a RegionServer's total CPU time. Avoiding this performance penalty won't
lead to any massive performance boost, but is a nice little win.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
