[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:        48683                   48677               
Commit:               7aaffbede46ce352b91c    e153efde9754a650e555
Number of test runs:  4                       6                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time             1:18:48  ->  1:19:12         +23.6 s   +0.5 %
           tmpdir size          30.08 GiB  ->  30.60 GiB   +537.39 MiB   +1.7 %
                                                                               
  test12: Build virtual/kernel
           build time              6:32.5  ->  6:32.4          -0.06 s   -0.0 %
                                                                               
  test13: Build core-image-sato with rm_work enabled
           build time             1:20:42  ->  1:21:02         +19.9 s   +0.4 %
           tmpdir size           5.91 GiB  ->  5.97 GiB     +57.20 MiB   +0.9 %
                                                                               
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time          2:05.3  ->  2:05.4          +0.18 s   +0.1 %
                                                                               
  test3: Bitbake parsing (bitbake -p)
           parse_1 time            27.6 s  ->  27.5 s          -0.10 s   -0.4 %
           parse_2 time            17.4 s  ->  17.3 s          -0.04 s   -0.2 %
           parse_3 time             1.7 s  ->  1.7 s           -0.00 s   -0.1 %
                                                                               
  test4: eSDK metrics
           installer_bin size    1.01 GiB  ->  1.03 GiB     +13.11 MiB   +1.3 %
           deploy time             2:33.9  ->  2:33.6          -0.27 s   -0.2 %
           deploy_dir size       3.31 GiB  ->  3.37 GiB     +63.04 MiB   +1.9 %
                                                                               

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