[yocto-perf] Build Perf Test Report for CentOS Linux 7 (Core)

[Yocto CentOS 7 Build Perf Tester]

Yocto build performance test report.

TEST METADATA:
==============
                      CURRENT COMMIT          COMPARING WITH      
Hostname:             ypperf-centos7          ypperf-centos7      
Branch:               master                  master              
Commit number:        53311                   53300               
Commit:               8dac3ce4247bca443c96    554379870fab3552fad7
Number of test runs:  3                       4                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:33:37  ->  1:34:02          +25.0 s   +0.4 %
           tmpdir size           34.49 GiB  ->  35.24 GiB    +770.39 MiB   +2.2 %
           rootfs size          246.71 MiB  ->  246.71 MiB      +1.3 kiB   +0.0 %
                                                                                 
  test12: Build virtual/kernel
           build time               7:56.1  ->  7:57.4            +1.3 s   +0.3 %
                                                                                 
  test13: Build core-image-sato with rm_work enabled
           build time              1:34:20  ->  1:34:46          +25.8 s   +0.5 %
           tmpdir size            6.54 GiB  ->  6.54 GiB       +2.96 MiB   +0.0 %
                                                                                 
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:25.6  ->  2:25.3           -0.24 s   -0.2 %
                                                                                 
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             32.7 s  ->  32.1 s           -0.60 s   -1.8 %
           parse_2 time             21.2 s  ->  21.4 s           +0.17 s   +0.8 %
           parse_3 time              1.8 s  ->  1.9 s            +0.01 s   +0.6 %
                                                                                 
  test4: eSDK metrics
           installer_bin size     1.28 GiB  ->  1.28 GiB      -158.8 kiB   -0.0 %
           deploy time              2:28.1  ->  2:27.8           -0.34 s   -0.2 %
           deploy_dir size        4.23 GiB  ->  4.23 GiB      -457.3 kiB   -0.0 %
                                                                                 

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