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Dridi Boukelmoune authored
As I was comparing the output of two varnishstat executions that were captured after a fresh start of varnishd followed by the workloads to compare, I realized diff(1) was giving me a hard time, and git-diff(1) barely improved the situation. Looking for generic command line utilities to compare metrics I wasn't able to find anything. So instead I came up with the output format I thought would help me spot interesting differences and came up with a format inspired by the unified diff, with a twist. I wanted metrics to be vertically aligned to easily see differences in orders of magnitude and reduce the noise to a minimum. The result is that taking this detour to script varnishstatdiff sped my research up ultimately. This should hopefully be portable to POSIX systems.
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