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From "Anindya Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-5978) Improve run time for arithmetic operators for Resources
Date Wed, 03 Aug 2016 07:27:20 GMT
Anindya Sinha created MESOS-5978:
------------------------------------

             Summary: Improve run time for arithmetic operators for Resources
                 Key: MESOS-5978
                 URL: https://issues.apache.org/jira/browse/MESOS-5978
             Project: Mesos
          Issue Type: Improvement
          Components: general
            Reporter: Anindya Sinha
            Assignee: Anindya Sinha
            Priority: Minor


Resource arithmetic concerning += and -= operators needs to be improved such that the impact
of shared resources is minimal. Following is the observation of Resources_BENCHMARK_Test.Arithmetic.

Head
====

Resources benchmark on top of 6ce156b2bed7edecb27ce50f68d262ea4ab4f88e

[ RUN      ] ResourcesOperators/Resources_BENCHMARK_Test.Arithmetic/0
Took 72228us to perform 50000 'total += r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 101574us to perform 50000 'total -= r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 251715us to perform 50000 'total = total + r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 293414us to perform 50000 'total = total - r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256

Pre-shared resources
=================

Resources benchmark on top of 48a492cd9d7d0a194735b9b4107a35b489c596e1

[ RUN      ] ResourcesOperators/Resources_BENCHMARK_Test.Arithmetic/0
Took 48583us to perform 50000 'total += r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 86166us to perform 50000 'total -= r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 233148us to perform 50000 'total = total + r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256
Took 265719us to perform 50000 'total = total - r' operations on cpus(*):1; gpus(*):1; mem(*):128;
disk(*):256


'total += r' run time sees 40% jump. (I've run these 10 times and took an average, the avg
is 48685.4us (pre-shared resources) vs. 68421.7us (post-shared resources).



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