[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:        51893                   51875               
Commit:               044d88895d98c9358d0f    c6edf2f8bc5778b267e3
Number of test runs:  2                       6                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:39  ->  1:30:35          -4.3 s   -0.1 %
           tmpdir size           33.30 GiB  ->  33.30 GiB     +2.38 MiB   +0.0 %
           rootfs size          235.31 MiB  ->  235.31 MiB     -2.7 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:53.0  ->  7:53.6          +0.63 s   +0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:20  ->  1:32:08         -12.5 s   -0.2 %
           tmpdir size            6.49 GiB  ->  6.49 GiB      +94.0 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:03.0  ->  2:04.1           +1.1 s   +0.9 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.3 s  ->  27.3 s          +0.01 s   +0.0 %
           parse_2 time             17.2 s  ->  17.1 s          -0.06 s   -0.3 %
           parse_3 time              1.8 s  ->  1.8 s           +0.00 s   +0.1 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB      +90.3 kiB   +0.0 %
           deploy time              2:11.1  ->  2:10.4          -0.72 s   -0.5 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB     +363.7 kiB   +0.0 %
                                                                                

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