[jira] [Commented] (IMPALA-10904) Add some perf tools to the repository

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-10904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17414209#comment-17414209 ] 

ASF subversion and git services commented on IMPALA-10904:
----------------------------------------------------------

Commit 6d47927668e6e9accc3efd0d5bcd26ee9926cb39 in impala's branch refs/heads/master from Zoltan Borok-Nagy
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=6d47927 ]

IMPALA-10904: Add some perf tools to the repository

This patch adds two perf tools to the repository. Both can be used to
generate flame graphs (https://www.brendangregg.com/flamegraphs.html).

perf-record.sh:
It samples the CPU stack traces for the entire system, or for a
specific PID until the user hits Ctrl+C. It can be useful if the
developer wants to take a look at what Impala is doing.
The resulting flame graph is written to an SVG file.

perf-query.sh:
It takes a query string as a parameter and passes it to the impala
shell to execute. While the query is executing the script samples
the CPU stack traces for the entire system. The resulting flame
graph is written to an SVG file.
E.g.:
perf-query.sh "select count(*) from tpch.lineitem group by l_returnflag"

Change-Id: Ib3da696b939204d23c5285dcf1bf6ee3a3738415
Reviewed-on: http://gerrit.cloudera.org:8080/17834
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>


> Add some perf tools to the repository
> -------------------------------------
>
>                 Key: IMPALA-10904
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10904
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Infrastructure
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Zoltán Borók-Nagy
>            Priority: Major
>
> Flame graphs are efficient tools to measure performance.
> We should make it easy to generate flame graphs for Impala queries, i.e. we should have some scripts in the repo that developers can easily use.



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