[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:        52736                   52720               
Commit:               fe43e599327f26b399c1    a785fdbe62595af092e0
Number of test runs:  9                       1                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:32:13  ->  1:32:23          +9.1 s   +0.2 %
           tmpdir size           33.91 GiB  ->  33.90 GiB    -10.68 MiB   -0.0 %
           rootfs size          240.85 MiB  ->  240.85 MiB     -0.9 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:51.2  ->  7:50.8          -0.42 s   -0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:33:24  ->  1:33:09         -15.2 s   -0.3 %
           tmpdir size            6.58 GiB  ->  6.58 GiB     -654.7 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:16.5  ->  2:15.8          -0.72 s   -0.5 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.4 s  ->  29.1 s          -0.33 s   -1.1 %
           parse_2 time             19.4 s  ->  19.0 s          -0.40 s   -2.1 %
           parse_3 time              1.8 s  ->  1.8 s           -0.03 s   -1.8 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB     -522.0 kiB   -0.0 %
           deploy time              2:18.6  ->  2:18.1          -0.48 s   -0.3 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB     -866.8 kiB   -0.0 %
                                                                                

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