[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:        52782                   52766               
Commit:               801745d918e83f976c70    fef47bd915f6a3960e51
Number of test runs:  8                       16                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:32:42  ->  1:32:47          +4.1 s   +0.1 %
           tmpdir size           33.90 GiB  ->  33.91 GiB     +9.18 MiB   +0.0 %
           rootfs size          240.93 MiB  ->  240.93 MiB     -5.8 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:56.0  ->  7:55.8          -0.18 s   -0.0 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:33:32  ->  1:33:38          +5.6 s   +0.1 %
           tmpdir size            6.58 GiB  ->  6.58 GiB     +786.8 kiB   +0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:22.2  ->  2:21.9          -0.27 s   -0.2 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             30.0 s  ->  29.9 s          -0.05 s   -0.2 %
           parse_2 time             19.9 s  ->  19.9 s          +0.03 s   +0.2 %
           parse_3 time              1.8 s  ->  1.8 s           -0.00 s   -0.2 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.25 GiB  ->  1.25 GiB     +336.2 kiB   +0.0 %
           deploy time              2:24.1  ->  2:24.7          +0.62 s   +0.4 %
           deploy_dir size        4.12 GiB  ->  4.12 GiB     +467.5 kiB   +0.0 %
                                                                                

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