[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:        53220                   53218               
Commit:               be52da152a4d9f9e7988    c4f1276721a6e2ea5c4b
Number of test runs:  4                       11                  

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:33:33  ->  1:33:21         -12.1 s   -0.2 %
           tmpdir size           34.45 GiB  ->  34.45 GiB    -428.2 kiB   -0.0 %
           rootfs size          278.52 MiB  ->  278.52 MiB     +0.8 kiB   +0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:57.0  ->  7:56.7          -0.36 s   -0.1 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:34:09  ->  1:34:11          +1.4 s   +0.0 %
           tmpdir size            6.55 GiB  ->  6.55 GiB     -722.8 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:27.5  ->  2:27.6          +0.09 s   +0.1 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             32.8 s  ->  32.5 s          -0.35 s   -1.1 %
           parse_2 time             21.5 s  ->  21.6 s          +0.05 s   +0.3 %
           parse_3 time              1.9 s  ->  1.9 s           +0.03 s   +1.5 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.28 GiB  ->  1.28 GiB      +82.9 kiB   +0.0 %
           deploy time              2:28.3  ->  2:28.6          +0.23 s   +0.2 %
           deploy_dir size        4.22 GiB  ->  4.22 GiB      -76.1 kiB   -0.0 %
                                                                                

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