[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:        52570                   52541               
Commit:               7faf6a00ba55db5cb5f2    41d89552620bfbc94031
Number of test runs:  2                       14                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:32:12  ->  1:32:29         +16.8 s   +0.3 %
           tmpdir size           33.69 GiB  ->  33.69 GiB    -546.6 kiB   -0.0 %
           rootfs size          240.85 MiB  ->  240.85 MiB     +1.1 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:50.9  ->  7:51.2          +0.24 s   +0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:60  ->  1:32:58          -2.0 s   -0.0 %
           tmpdir size            6.57 GiB  ->  6.57 GiB     +780.6 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:15.6  ->  2:15.4          -0.14 s   -0.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             29.4 s  ->  29.3 s          -0.03 s   -0.1 %
           parse_2 time             19.0 s  ->  19.0 s          -0.09 s   -0.5 %
           parse_3 time              1.8 s  ->  1.8 s           -0.00 s   -0.0 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB      -39.7 kiB   -0.0 %
           deploy time              2:18.7  ->  2:17.6           -1.0 s   -0.8 %
           deploy_dir size        4.11 GiB  ->  4.11 GiB     -109.9 kiB   -0.0 %
                                                                                

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