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Add Linux NUMA "numastat" metrics (#249)

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* Add Linux NUMA "numastat" metrics
  Read the `numastat` metrics from /sys/devices/system/node/node* when reading NUMA meminfo metrics.
* Update end-to-end test output.
* Add `numastat` metrics as counters.
* Add tests for error conditions.
* Refactor meminfo numa metrics struct
* Refactor meminfoKey into a simple struct of metric data.
  This makes it easier to pass slices of metrics around.
* Refactor tests.
* Fixup: Add suggested fixes.
* Fixup:  More fixes
* Add another scanner.Err() return
* Add "_total" to counter metrics.
This commit is contained in:
Ben Kochie 2016-10-12 13:07:49 +02:00 • committed by Tobias Schmidt
commit c6162312f2
5 changed files with 158 additions and 26 deletions
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6
collector/fixtures/sys/devices/system/node/node0/numastat Normal file
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@ -0,0 +1,6 @@
numa_hit 193460335812
numa_miss 12624528
numa_foreign 59858623300
interleave_hit 57146
local_node 193454780853
other_node 18179487

6
collector/fixtures/sys/devices/system/node/node1/numastat Normal file
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@ -0,0 +1,6 @@
numa_hit 326720946761
numa_miss 59858626709
numa_foreign 12624528
interleave_hit 57286
local_node 326719046550
other_node 59860526920