[
https://issues.apache.org/jira/browse/HBASE-28485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17835867#comment-17835867
]
Hudson commented on HBASE-28485:
--------------------------------
Results for branch branch-3
[build #183 on
builds.a.o|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-3/183/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-3/183/General_20Nightly_20Build_20Report/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-3/183/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 jdk11 hadoop3 checks{color}
-- For more information [see jdk11
report|https://ci-hbase.apache.org/job/HBase%20Nightly/job/branch-3/183/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> 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
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0-alpha-1, 2.7.0, 3.0.0-beta-2, 2.6.1, 2.5.9
>
> Attachments: async-prof-flamegraph-cpu_event-1712150670836-cpu.html,
> async-prof-pid-1324144-cpu-1.html
>
>
> The zstd documentation
> [recommends|https://facebook.github.io/zstd/zstd_manual.html#Chapter4]
> 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)
