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bcache: remove cache_readaheads_totals metrics #2103 #2583

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May 20, 2023
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bcache: remove cache_readaheads_totals metrics #2103 #2583

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bcache: remove cache_readaheads_totals metrics #2103
0xack13 Jan 22, 2023
ee13b24
Append bcacheReadaheadMetrics when CacheReadaheads value exists
0xack13 Mar 11, 2023
f7bf8c9
Update test cases for cachereadahead greater than zero
0xack13 Mar 25, 2023
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21 changes: 13 additions & 8 deletions collector/bcache_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -134,14 +134,19 @@ func bcachePeriodStatsToMetric(ps *bcache.PeriodStats, labelValue string) []bcac
extraLabel: label,
extraLabelValue: labelValue,
},
{
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name: "cache_readaheads_total",
desc: "Count of times readahead occurred.",
value: float64(ps.CacheReadaheads),
metricType: prometheus.CounterValue,
extraLabel: label,
extraLabelValue: labelValue,
},
}
if ps.CacheReadaheads != 0 {
bcacheReadaheadMetrics := []bcacheMetric{
{
name: "cache_readaheads_total",
desc: "Count of times readahead occurred.",
value: float64(ps.CacheReadaheads),
metricType: prometheus.CounterValue,
extraLabel: label,
extraLabelValue: labelValue,
},
}
metrics = append(metrics, bcacheReadaheadMetrics...)
}
return metrics
}
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2 changes: 1 addition & 1 deletion collector/fixtures/e2e-64k-page-output.txt
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Expand Up @@ -97,7 +97,7 @@ node_bcache_cache_misses_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-8
node_bcache_cache_read_races_total{uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
# HELP node_bcache_cache_readaheads_total Count of times readahead occurred.
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I think we should remove this from the tests and keep testing the case where ps.CacheReadaheads != 0

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@0xack13 0xack13 Mar 25, 2023 •
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If my understanding is correct, test cases have been updated to be used with ps.CacheReadaheads != 0. Also completed the DCO sign-off. Hope I didn't miss anything here.

# TYPE node_bcache_cache_readaheads_total counter
node_bcache_cache_readaheads_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
node_bcache_cache_readaheads_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 13
# HELP node_bcache_congested Congestion.
# TYPE node_bcache_congested gauge
node_bcache_congested{uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
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2 changes: 1 addition & 1 deletion collector/fixtures/e2e-output.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ node_bcache_cache_misses_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-8
node_bcache_cache_read_races_total{uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
# HELP node_bcache_cache_readaheads_total Count of times readahead occurred.
# TYPE node_bcache_cache_readaheads_total counter
node_bcache_cache_readaheads_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
node_bcache_cache_readaheads_total{backing_device="bdev0",uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 13
# HELP node_bcache_congested Congestion.
# TYPE node_bcache_congested gauge
node_bcache_congested{uuid="deaddd54-c735-46d5-868e-f331c5fd7c74"} 0
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20 changes: 10 additions & 10 deletions collector/fixtures/sys.ttar
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Expand Up @@ -141,7 +141,7 @@ Mode: 400
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/class/dmi/id/product_version
Lines: 1
�[�
�[�
Mode: 444
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/class/dmi/id/sys_vendor
Expand Down Expand Up @@ -1440,7 +1440,7 @@ Mode: 444
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/class/power_supply/BAT0/model_name
Lines: 1
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LNV-45N1��
Mode: 444
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Directory: sys/class/power_supply/BAT0/power
Expand Down Expand Up @@ -2396,7 +2396,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_day/cache_readaheads
Lines: 1
0
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Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Directory: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_five_minute
Expand Down Expand Up @@ -2439,7 +2439,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_five_minute/cache_readaheads
Lines: 1
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Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Directory: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_hour
Expand Down Expand Up @@ -2482,7 +2482,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_hour/cache_readaheads
Lines: 1
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Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Directory: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_total
Expand Down Expand Up @@ -2525,7 +2525,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/stats_total/cache_readaheads
Lines: 1
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Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/devices/pci0000:00/0000:00:0d.0/ata4/host3/target3:0:0/3:0:0:0/block/sdb/bcache/writeback_rate_debug
Expand Down Expand Up @@ -3900,7 +3900,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_day/cache_readaheads
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Directory: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_five_minute
Expand Down Expand Up @@ -3943,7 +3943,7 @@ Mode: 644
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Directory: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_hour
Expand Down Expand Up @@ -3986,7 +3986,7 @@ Mode: 644
# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Path: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_hour/cache_readaheads
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Directory: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_total
Expand Down Expand Up @@ -4029,7 +4029,7 @@ Mode: 644
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Path: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/stats_total/cache_readaheads
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Path: sys/fs/bcache/deaddd54-c735-46d5-868e-f331c5fd7c74/tree_depth
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