[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:        52146                   52143               
Commit:               8e4c03744cfa8cc55968    5293bee5f77f49a43185
Number of test runs:  8                       4                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:49  ->  1:30:57          +7.5 s   +0.1 %
           tmpdir size           33.15 GiB  ->  33.15 GiB    -386.5 kiB   -0.0 %
           rootfs size          235.30 MiB  ->  235.29 MiB     -7.0 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:51.1  ->  7:51.7          +0.63 s   +0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:13  ->  1:32:12         -0.70 s   -0.0 %
           tmpdir size            6.47 GiB  ->  6.47 GiB     +180.5 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:18.1  ->  2:18.4          +0.26 s   +0.2 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             28.9 s  ->  29.1 s          +0.12 s   +0.4 %
           parse_2 time             18.9 s  ->  18.9 s          +0.06 s   +0.3 %
           parse_3 time              1.8 s  ->  1.8 s           +0.01 s   +0.3 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.22 GiB  ->  1.22 GiB      -21.4 kiB   -0.0 %
           deploy time              2:15.2  ->  2:17.2           +2.0 s   +1.5 %
           deploy_dir size        4.01 GiB  ->  4.01 GiB      +60.5 kiB   +0.0 %
                                                                                

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