[pull] master from Azure:master#1641
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pull[bot] merged 1 commit intopphuchar:masterfrom Jul 4, 2021
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…m calls (#7987) Why I did it Currently hostcfgd is implemented in a way each feature which is enabled/disabled triggering execution of systemctl enable/unmask commands which eventually trigger 'systemctl daemon-reload' command. Each call like this cost 0.6s and overall add a overhead of ~12 seconds of CPU time. This change will verify the desired state of a feature and the current state of this feature on systemd and trigger a system call only when must. How I did it Check each feature status on systemd before executing a system call to enable and reload the systemctl daemon. How to verify it Build an image with this change and observe less system calls are executed. Signed-off-by: Shlomi Bitton <[email protected]>
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