Major Description
"ppid" in the system stats looks to get aggregated as some sort of average. I didn't check the code, but that's what it looks like.
The aggregated stat is pretty useless. It's certainly possible over a period of time the same process will appear with different parent process IDs – though it's not clear how much value the stat has over this timeframe anyway. Over a day or an hour I think it would be more valuable to use the last sample rather than an average. At least in this case we get one good ppid value; when the average is taken we essentially get zero good values.
[{<<"godu/28373/ppid">>,28282.438034188035},
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{<<"projector/28540/ppid">>,28468.040598290598},
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{<<"goxdcr/28485/ppid">>,28420.143162393164},
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{<<"saslauthd-port/28439/ppid">>,60.43589743589743},
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{<<"beam.smp/28307/ppid">>,60.43589743589743},
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{<<"beam.smp/28284/ppid">>,0.002136752136752137},
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{<<"sigar_port/28465/ppid">>,28246.514957264957},
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{<<"godu/28382/ppid">>,28246.514957264957},
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{<<"beam.smp/28343/ppid">>,28246.514957264957},
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{<<"beam.smp/28808/ppid">>,14383.74358974359},
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{<<"goport/28529/ppid">>,14383.74358974359},
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{<<"goport/28481/ppid">>,14383.74358974359},
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{<<"memcached/28450/ppid">>,14383.74358974359},
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{<<"memcached/31393/ppid">>,13839.820512820514},
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{<<"beam.smp/28808/ppid">>,13839.820512820514},
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{<<"goport/28529/ppid">>,13839.820512820514},
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{<<"goport/28481/ppid">>,13839.820512820514},
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{<<"saslauthd-port/28439/ppid">>,28223.564102564105},
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{<<"beam.smp/28307/ppid">>,28223.564102564105},
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{<<"beam.smp/28284/ppid">>,0.9978632478632478},
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