[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:        52109                   52071               
Commit:               4ef016683d986cc5291e    7e8056d96ebe85d72bc4
Number of test runs:  2                       4                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:54  ->  1:31:02          +7.9 s   +0.1 %
           tmpdir size           33.34 GiB  ->  33.34 GiB    -661.0 kiB   -0.0 %
           rootfs size          235.27 MiB  ->  235.28 MiB     +6.0 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:52.7  ->  7:50.8           -1.9 s   -0.4 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:10  ->  1:32:30         +20.1 s   +0.4 %
           tmpdir size            6.49 GiB  ->  6.49 GiB     +415.0 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:13.3  ->  2:17.0           +3.7 s   +2.8 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.3 s  ->  28.7 s           +1.4 s   +5.3 %
           parse_2 time             17.2 s  ->  18.6 s           +1.4 s   +8.2 %
           parse_3 time              1.8 s  ->  1.8 s           +0.02 s   +1.2 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB      -81.0 kiB   -0.0 %
           deploy time              2:10.5  ->  2:15.2           +4.7 s   +3.6 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB      +47.0 kiB   +0.0 %
                                                                                

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