Joe McDonnell created IMPALA-12807:
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Summary: Add option to use the 'mold' linker
Key: IMPALA-12807
URL: https://issues.apache.org/jira/browse/IMPALA-12807
Project: IMPALA
Issue Type: Improvement
Components: Backend
Affects Versions: Impala 4.3.0
Reporter: Joe McDonnell
Mold is a new linker that says it is faster than lld and gold. See
[https://github.com/rui314/mold]
Hand testing it on my machine, it makes a big difference in speed of iteration:
{noformat}
# Test case:
# - Start with fully built impalad
# - touch be/src/scheduling/scheduler.cc
# - time make -j12 impalad
With Gold (current default):
real 0m15.843s
user 0m15.478s
sys 0m2.127s
real 0m15.820s
user 0m15.302s
sys 0m2.157s
real 0m16.136s
user 0m15.799s
sys 0m2.098s
With Mold:
real 0m2.479s
user 0m2.169s
sys 0m0.958s
real 0m2.674s
user 0m2.218s
sys 0m1.086s
real 0m2.524s
user 0m2.136s
sys 0m1.042s{noformat}
This seems like something we should investigate further.
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