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Collect compute backpressure throttling time

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This will tell us how much time the compute has spent throttled if
pageserver/safekeeper cannot keep up with WAL generation.

Signed-off-by: Tristan Partin <tristan@neon.tech>
This commit is contained in:
Tristan Partin
2024-10-30 09:58:29 -05:00
committed by GitHub
parent 96e35e11a6
commit 8af9412eb2
3 changed files with 12 additions and 0 deletions
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1
compute/etc/neon_collector.jsonnet
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@@ -3,6 +3,7 @@
metrics: [
import 'sql_exporter/checkpoints_req.libsonnet',
import 'sql_exporter/checkpoints_timed.libsonnet',
import 'sql_exporter/compute_backpressure_throttling_ms.libsonnet',
import 'sql_exporter/compute_current_lsn.libsonnet',
import 'sql_exporter/compute_logical_snapshot_files.libsonnet',
import 'sql_exporter/compute_receive_lsn.libsonnet',

10
compute/etc/sql_exporter/compute_backpressure_throttling_ms.libsonnet Normal file
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@@ -0,0 +1,10 @@
{
metric_name: 'compute_backpressure_throttling_ms',
type: 'gauge',
help: 'Time compute has spent throttled',
key_labels: null,
values: [
'throttled',
],
query: importstr 'sql_exporter/compute_backpressure_throttling_ms.sql',
}

1
compute/etc/sql_exporter/compute_backpressure_throttling_ms.sql Normal file
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@@ -0,0 +1 @@
SELECT neon.backpressure_throttling_time() AS throttled;