dashboard: use auto decimal scaling

Use auto decimal scaling for most panels. The main motivation is bad
scaling for low value panels with decimalsY1=0. After the patch, scaling
for low values should be good enough. At the same time, if values became
high, there shouldn't be any excessive decimals. The drawback is that
sometimes Grafana auto scaling is aesthetically weird, like mixing
2 s, 1.5 s and 500 ms on the same axis.

Author: DifferentialOrange

CHANGELOG.md

@@ -4,6 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+- Use auto decimal scaling for most panels (PR #213)
+
+### Fixed
+- Scaling for some low values panels (PR #213)
+
+
 ## [2.1.0] - 2023-05-23
 Grafana revisions: [InfluxDB revision 17](https://grafana.com/api/dashboards/12567/revisions/17/download), [Prometheus revision 17](https://grafana.com/api/dashboards/13054/revisions/17/download), [InfluxDB TDG revision 6](https://grafana.com/api/dashboards/16405/revisions/6/download), [Prometheus TDG revision 6](https://grafana.com/api/dashboards/16406/revisions/6/download).
 

README.md

@@ -194,8 +194,8 @@ You can add your own custom panels to the bottom of the template dashboard.
       min, # (optional) Min of the Y axes
       max, # (optional) Max of the Y axes
       labelY1, # (optional) Label of the left Y axis
-      decimals, # (default 3) Override automatic decimal precision for legend and tooltip
-      decimalsY1, # (default 0) Override automatic decimal precision for the left Y axis
+      decimals, # (default null) Override automatic decimal precision for legend and tooltip
+      decimalsY1, # (default null) Override automatic decimal precision for the left Y axis
       legend_avg, # (default true) Show average in legend
       legend_max, # (default true) Show max in legend
       panel_height, # (default 8) Panel heigth in grid units

dashboard/panels/cluster.libsonnet

@@ -320,7 +320,6 @@ local prometheus = grafana.prometheus;
     title=title,
     description=description,
     min=0,
-    decimals=0,
     legend_avg=false,
     legend_max=false,
     panel_height=6,

dashboard/panels/common.libsonnet

@@ -35,8 +35,8 @@ local influxdb_query_filters(filters) = std.join(' AND ', std.map(
     max=null,
     labelY1=null,
     fill=0,
-    decimals=2,
-    decimalsY1=0,
+    decimals=null,
+    decimalsY1=null,
     legend_avg=true,
     legend_max=true,
     legend_rightSide=false,

dashboard/panels/cpu.libsonnet

@@ -71,7 +71,6 @@ local prometheus = grafana.prometheus;
     description=description,
     labelY1='ticks per second',
     min=0,
-    decimalsY1=2,
     panel_width=12,
   ).addTarget(
     common.target(

dashboard/panels/crud.libsonnet

@@ -45,8 +45,6 @@ local operation_rps_template(
   description=description,
   min=0,
   labelY1='requests per second',
-  decimals=2,
-  decimalsY1=2,
   panel_height=8,
   panel_width=6,
 ).addTarget(
@@ -90,8 +88,6 @@ local operation_latency_template(
   format='s',
   min=0,
   labelY1='99th percentile',
-  decimals=2,
-  decimalsY1=2,
   panel_height=8,
   panel_width=6,
 ).addTarget(

dashboard/panels/http.libsonnet

@@ -99,7 +99,6 @@ local prometheus = grafana.prometheus;
     description=description,
     format='s',
     labelY1=label,
-    decimalsY1=null,
   ).addTarget(
     common.target(
       cfg,

dashboard/panels/mvcc.libsonnet

@@ -383,6 +383,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_used_stories', 'count')
@@ -413,6 +414,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_used_retained', 'count')
@@ -443,6 +445,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_read_view_stories', 'count')
@@ -473,6 +476,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_read_view_retained', 'count')
@@ -503,6 +507,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_tracking_stories', 'count')
@@ -533,6 +538,7 @@ local prometheus = grafana.prometheus;
     description=description,
     format='none',
     labelY1='tuples',
+    decimals=0,
     panel_width=6,
   ).addTarget(
     mvcc_target(cfg, 'tnt_memtx_mvcc_tuples_tracking_retained', 'count')

dashboard/panels/replication.libsonnet

@@ -4,7 +4,6 @@ local timeseries = import 'dashboard/grafana/timeseries.libsonnet';
 local common = import 'dashboard/panels/common.libsonnet';
 local variable = import 'dashboard/variable.libsonnet';
 
-local graph = grafana.graphPanel;
 local influxdb = grafana.influxdb;
 local prometheus = grafana.prometheus;
 
@@ -59,8 +58,6 @@ local prometheus = grafana.prometheus;
     title=title,
     description=description,
     format='s',
-    decimals=null,
-    decimalsY1=null,
     legend_avg=false,
     min=0,
     panel_width=8,
@@ -91,8 +88,6 @@ local prometheus = grafana.prometheus;
     title=title,
     description=description,
     format='s',
-    decimals=null,
-    decimalsY1=null,
     fill=1,
     legend_avg=false,
     legend_max=false,

dashboard/panels/runtime.libsonnet

@@ -159,8 +159,6 @@ local common = import 'dashboard/panels/common.libsonnet';
     title=title,
     description=description,
     labelY1='cycle duration',
-    decimals=2,
-    decimalsY1=2,
     format='ms',
     panel_width=12,
   ).addTarget(