[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:        51959                   51945               
Commit:               4b8fd52f6d3682be287c    6d9de01c181066326365
Number of test runs:  7                       1                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:28  ->  1:30:31          +3.0 s   +0.1 %
           tmpdir size           33.31 GiB  ->  33.31 GiB     +1.89 MiB   +0.0 %
           rootfs size          235.37 MiB  ->  235.37 MiB     -4.0 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:54.7  ->  7:53.3           -1.4 s   -0.3 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:31:49  ->  1:32:10         +20.6 s   +0.4 %
           tmpdir size            6.49 GiB  ->  6.49 GiB     +996.0 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:02.9  ->  2:02.8          -0.15 s   -0.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.3 s  ->  27.4 s          +0.10 s   +0.4 %
           parse_2 time             17.2 s  ->  17.2 s          -0.00 s   -0.0 %
           parse_3 time              1.7 s  ->  1.7 s           +0.00 s   +0.1 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB      -16.9 kiB   -0.0 %
           deploy time              2:12.9  ->  2:11.2           -1.7 s   -1.3 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB     +262.7 kiB   +0.0 %
                                                                                

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