[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:        52159                   52146               
Commit:               3be5331986289bf11040    8e4c03744cfa8cc55968
Number of test runs:  4                       15                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:55  ->  1:30:50          -5.3 s   -0.1 %
           tmpdir size           33.15 GiB  ->  33.15 GiB     -47.5 kiB   -0.0 %
           rootfs size          235.29 MiB  ->  235.30 MiB     +5.9 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:51.9  ->  7:51.1          -0.83 s   -0.2 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:14  ->  1:32:09          -5.3 s   -0.1 %
           tmpdir size            6.47 GiB  ->  6.47 GiB     -433.3 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:18.6  ->  2:18.4          -0.13 s   -0.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.0 s  ->  29.1 s          +0.11 s   +0.4 %
           parse_2 time             18.9 s  ->  18.8 s          -0.05 s   -0.3 %
           parse_3 time              1.8 s  ->  1.8 s           +0.02 s   +1.3 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.22 GiB  ->  1.22 GiB     -236.2 kiB   -0.0 %
           deploy time              2:16.9  ->  2:17.8          +0.87 s   +0.6 %
           deploy_dir size        4.01 GiB  ->  4.01 GiB      -67.5 kiB   -0.0 %
                                                                                

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