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https://issues.apache.org/jira/browse/IMPALA-9476?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053743#comment-17053743
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Sahil Takiar commented on IMPALA-9476:
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Attaching output of running bloaty on an Impala release binary.
Some notes from an offline discussion:
* "5.5% 29.4Mi 43.0% 25.6Mi
/home/systest/Impala/be/src/exprs/like-predicate.cc" looks suspicious, could be
from the RE2 library
* bit-packing.cc has a lot of templates and macros to improve Parquet scanner
perf
* Thrift generated code is problematic because it has a lot of "vector<>"s - so
each different "vector<Foo*>" gets its own copy of a function
* hive_metastore_types.cpp is 21K lines of code
* "-ffunction-sections -Wl,--gc-sections" may help removed unused functions
* We should look into LTO, though we'd probably need to futz with
-fvisibility=hidden to get it to remove unused code, which might break our
codegen
> Run Bloaty McBloatface size profiler on Impala binaries
> -------------------------------------------------------
>
> Key: IMPALA-9476
> URL: https://issues.apache.org/jira/browse/IMPALA-9476
> Project: IMPALA
> Issue Type: Task
> Reporter: Sahil Takiar
> Priority: Major
> Attachments: Impala-Bloaty-McBloatface-Output.txt
>
>
> Bloaty McBloatface (https://github.com/google/bloaty) is a size profiler for
> binaries. We should run it against Impala binaries and see what improvements
> we can make.
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