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https://issues.apache.org/jira/browse/MESOS-4770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15326996#comment-15326996
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Klaus Ma commented on MESOS-4770:
---------------------------------
[~mcypark]/[~bmahler], did some investigation about {{Resources}} performance
({{--gtest_filter="*Allocation*"}}):
1. {{Resources::validate()}} is still heavy operation because of call # (1037)
2. {{Resources::operator+=}} is a heavy operation because of {{CopyFrom}}
*Test Steps*:
1. Build Mesos Test with {{-pg}} (export CPPFLAGS=-pg CFLAGS=-pg)
2. Run {{valgrind}} with {{--tool=callgrind}}
> Investigate performance improvements for 'Resources' class.
> -----------------------------------------------------------
>
> Key: MESOS-4770
> URL: https://issues.apache.org/jira/browse/MESOS-4770
> Project: Mesos
> Issue Type: Improvement
> Reporter: Benjamin Mahler
> Assignee: Michael Park
> Priority: Critical
>
> Currently we have some performance issues when we have heavy usage of the
> {{Resources}} class. Currently, we tend to work around these issues (e.g.
> reduce the amount of Resources arithmetic operations in the caller code).
> The implementation of {{Resources}} currently consists of wrapping underlying
> {{Resource}} protobuf objects and manipulating them. This is fairly expensive
> compared to doing things more directly with C++ objects.
> This ticket is to explore the performance improvements of using C++ objects
> more directly instead of working off of {{Resource}} objects.
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