[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:        52867                   52850               
Commit:               445acdffe0a75bf9ce94    99f505422bc06ba26ac3
Number of test runs:  7                       2                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:34  ->  1:30:45         +10.2 s   +0.2 %
           tmpdir size           33.47 GiB  ->  33.48 GiB     +8.45 MiB   +0.0 %
           rootfs size          241.08 MiB  ->  241.08 MiB     +6.3 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:57.4  ->  7:56.1           -1.3 s   -0.3 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:31:26  ->  1:31:24          -1.3 s   -0.0 %
           tmpdir size            6.40 GiB  ->  6.41 GiB      +9.26 MiB   +0.1 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:21.0  ->  2:21.8          +0.78 s   +0.6 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             30.0 s  ->  29.8 s          -0.20 s   -0.7 %
           parse_2 time             19.8 s  ->  19.8 s          +0.06 s   +0.3 %
           parse_3 time              1.8 s  ->  1.8 s           +0.01 s   +0.6 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB       -8.4 kiB   -0.0 %
           deploy time              2:24.4  ->  2:24.2          -0.20 s   -0.1 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB     +996.9 kiB   +0.0 %
                                                                                

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