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Correctly cast Darwin memory info #1060

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merged 2 commits into from Sep 7, 2018
Merged

Correctly cast Darwin memory info #1060

merged 2 commits into from Sep 7, 2018

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SuperQ
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@SuperQ SuperQ commented Sep 5, 2018 •
edited

  • Cast stats to float64 before doing math on them to avoid integer
    wrapping.
  • Remove invalid _total suffix from gauge values.

Fixes: #855

Signed-off-by: Ben Kochie superq@gmail.com

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SuperQ commented Sep 5, 2018

This also fixes the following promtool check metrics errors:

$ curl -s http://localhost:9100/metrics | promtool check metrics
node_memory_active_bytes_total non-counter metrics should not have "_total" suffix
node_memory_bytes_total non-counter metrics should not have "_total" suffix
node_memory_free_bytes_total non-counter metrics should not have "_total" suffix
node_memory_inactive_bytes_total non-counter metrics should not have "_total" suffix
node_memory_swapped_in_pages_total non-counter metrics should not have "_total" suffix
node_memory_swapped_out_pages_total non-counter metrics should not have "_total" suffix
node_memory_wired_bytes_total non-counter metrics should not have "_total" suffix

@SuperQ SuperQ mentioned this pull request Sep 5, 2018
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brian-brazil
brian-brazil reviewed Sep 5, 2018
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collector/meminfo_darwin.go Outdated
"inactive_bytes": ps * float64(vmstat.inactive_count),
"wired_bytes": ps * float64(vmstat.wire_count),
"free_bytes": ps * float64(vmstat.free_count),
"swapped_in_pages": ps * float64(vmstat.pageins),
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I think these two are counters

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Yea, I came to the same conclusion.

@SuperQ
Correctly cast Darwin memory info
9372275 
* Cast stats to float64 before doing math on them to avoid integer
wrapping.
* Remove invalid `_total` suffix from gauge values.
* Handle counters in `meminfo.go`.

Signed-off-by: Ben Kochie <superq@gmail.com>
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SuperQ commented Sep 5, 2018

Fixed up the metric type handling.

@SuperQ
Update CHANGELOG.
8cab6ce 
Signed-off-by: Ben Kochie <superq@gmail.com>
@SuperQ SuperQ merged commit ebdd524 into master Sep 7, 2018
@SuperQ SuperQ deleted the superq/darwin_meminfo branch September 7, 2018 20:27
oblitorum pushed a commit to shatteredsilicon/node_exporter that referenced this pull request Apr 9, 2024
@SuperQ @oblitorum
Correctly cast Darwin memory info (prometheus#1060)
4217baf 
* Correctly cast Darwin memory info

* Cast stats to float64 before doing math on them to avoid integer
wrapping.
* Remove invalid `_total` suffix from gauge values.
* Handle counters in `meminfo.go`.

Signed-off-by: Ben Kochie <superq@gmail.com>
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@discordianfish discordianfish discordianfish approved these changes

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Weird Memory Readings on macOS
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@SuperQ @discordianfish @brian-brazil