[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:        52070                   52053               
Commit:               3b77e7b7852549dcfbc4    b02f3bfe2fee291a9db8
Number of test runs:  2                       8                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:31:05  ->  1:30:49         -15.9 s   -0.3 %
           tmpdir size           33.34 GiB  ->  33.34 GiB    +723.5 kiB   +0.0 %
           rootfs size          235.27 MiB  ->  235.27 MiB     +1.5 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:53.4  ->  7:51.7           -1.6 s   -0.3 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:15  ->  1:32:04         -11.5 s   -0.2 %
           tmpdir size            6.49 GiB  ->  6.49 GiB     -190.0 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:13.3  ->  2:13.6          +0.33 s   +0.3 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.2 s  ->  27.4 s          +0.15 s   +0.5 %
           parse_2 time             17.2 s  ->  17.2 s          -0.01 s   -0.0 %
           parse_3 time              1.8 s  ->  1.8 s           +0.01 s   +0.7 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB       -9.4 kiB   -0.0 %
           deploy time              2:12.3  ->  2:09.2           -3.0 s   -2.3 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB      -42.4 kiB   -0.0 %
                                                                                

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