[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:        52676                   52675               
Commit:               e235a9e18bad4758650c    d47e89f338992b626d05
Number of test runs:  7                       6                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:32:15  ->  1:32:10         -5.3 s   -0.1 %
           tmpdir size           33.70 GiB  ->  33.70 GiB     -4.2 kiB   -0.0 %
           rootfs size          240.99 MiB  ->  241.00 MiB    +3.1 kiB   +0.0 %
                                                                               
  test12: Build virtual/kernel
           build time               7:50.5  ->  7:50.6         +0.16 s   +0.0 %
                                                                               
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:56  ->  1:32:53         -3.2 s   -0.1 %
           tmpdir size            6.57 GiB  ->  6.57 GiB     +36.6 kiB   +0.0 %
                                                                               
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:15.3  ->  2:15.3         +0.01 s   +0.0 %
                                                                               
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.2 s  ->  29.3 s         +0.08 s   +0.3 %
           parse_2 time             19.0 s  ->  19.0 s         +0.02 s   +0.1 %
           parse_3 time              1.8 s  ->  1.8 s          -0.00 s   -0.0 %
                                                                               
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB     -64.9 kiB   -0.0 %
           deploy time              2:18.2  ->  2:18.5         +0.33 s   +0.2 %
           deploy_dir size        4.11 GiB  ->  4.11 GiB     -52.2 kiB   -0.0 %
                                                                               

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