[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:        52042                   52022               
Commit:               9e958c9023ab54b0b402    793a82c2da639088884c
Number of test runs:  6                       3                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:44  ->  1:30:58         +14.1 s   +0.3 %
           tmpdir size           33.31 GiB  ->  33.31 GiB    +549.3 kiB   +0.0 %
           rootfs size          235.27 MiB  ->  235.27 MiB     -6.7 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:53.9  ->  7:53.5          -0.42 s   -0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:06  ->  1:32:07          +1.7 s   +0.0 %
           tmpdir size            6.49 GiB  ->  6.49 GiB      +82.7 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:12.8  ->  2:13.3          +0.50 s   +0.4 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.3 s  ->  27.2 s          -0.09 s   -0.3 %
           parse_2 time             17.1 s  ->  17.2 s          +0.09 s   +0.5 %
           parse_3 time              1.8 s  ->  1.8 s           +0.01 s   +0.5 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB     -614.5 kiB   -0.0 %
           deploy time              2:12.0  ->  2:11.7          -0.25 s   -0.2 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB      +65.7 kiB   +0.0 %
                                                                                

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