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Update Ray Data histograms to show percentiles in data dashboard #58650

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Merged
alanwguo merged 7 commits into from
Nov 18, 2025
Merged

Update Ray Data histograms to show percentiles in data dashboard #58650

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320251f
Update Ray Data histograms to show percentiles in data dashboard
alanwguo Nov 14, 2025
1723ce4
fixup
alanwguo Nov 14, 2025
8aeff97
fix lint
alanwguo Nov 14, 2025
5764569
add p50 and p99 panels
alanwguo Nov 17, 2025
120ba3f
adjust x axis for histogram bar charts
alanwguo Nov 18, 2025
fb74345
Merge branch 'master' into update-histograms
alanwguo Nov 18, 2025
fd331b4
fixup
alanwguo Nov 18, 2025
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128 changes: 99 additions & 29 deletions python/ray/dashboard/modules/metrics/dashboards/data_dashboard_panels.py
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Original file line number Diff line number Diff line change
Expand Up @@ -479,70 +479,62 @@
# Task Completion Time Percentiles
TASK_COMPLETION_TIME_PANEL = Panel(
id=38,
title="Task Completion Time Histogram (s)",
description="Time (in seconds) spent (including backpressure) running tasks to completion. Larger bars means more tasks finished within that duration range.",
title="P90 Task Completion Time",
description="P90 time (in seconds) spent (including backpressure) running tasks to completion.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_task_completion_time_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} s",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
expr='histogram_quantile(0.9, sum by (operator, le) (ray_data_task_completion_time_bucket{{{global_filters}, operator=~"$Operator"}}))',
legend="{{operator}}",
),
],
unit="short",
unit="s",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

BLOCK_COMPLETION_TIME_PANEL = Panel(
id=61,
title="Block Completion Time Histogram (s)",
description="Time (in seconds) spent processing blocks to completion. If multiple blocks are generated per task, this is approximated by assuming each block took an equal amount of time to process. Larger bars means more blocks finished within that duration range.",
title="P90 Block Completion Time",
description="P90 time (in seconds) spent processing blocks to completion. If multiple blocks are generated per task, this is approximated by assuming each block took an equal amount of time to process.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_completion_time_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} s",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
expr='histogram_quantile(0.9, sum by (operator, le) (ray_data_block_completion_time_bucket{{{global_filters}, operator=~"$Operator"}}))',
legend="{{operator}}",
),
],
unit="short",
unit="s",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

BLOCK_SIZE_BYTES_PANEL = Panel(
id=62,
title="Block Size (Bytes) Histogram",
description="Size (in bytes) per block. Larger bars means more blocks are within that size range.",
title="P90 Block Size (Bytes)",
description="P90 size (in bytes) per block.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_size_bytes_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} bytes",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
expr='histogram_quantile(0.9, sum by (operator, le) (ray_data_block_size_bytes_bucket{{{global_filters}, operator=~"$Operator"}}))',
legend="{{operator}}",
),
],
unit="short",
unit="bytes",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

BLOCK_SIZE_ROWS_PANEL = Panel(
id=63,
title="Block Size (Rows) Histogram",
description="Number of rows per block. Larger bars means more blocks are within that number of rows range.",
title="P90 Block Size (Rows)",
description="P90 number of rows per block.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_size_rows_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} rows",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
expr='histogram_quantile(0.9, sum by (operator, le) (ray_data_block_size_rows_bucket{{{global_filters}, operator=~"$Operator"}}))',
legend="{{operator}}",
),
],
unit="short",
unit="rows",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

TASK_OUTPUT_BACKPRESSURE_TIME_PANEL = Panel(
Expand Down Expand Up @@ -1051,10 +1043,82 @@
stack=False,
)

OPERATOR_TASK_COMPLETION_TIME_PANEL = Panel(
id=78,
title="Task Completion Time Histogram (s)",
description="Time (in seconds) spent (including backpressure) running tasks to completion. Larger bars means more tasks finished within that duration range.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_task_completion_time_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} s",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
),
],
unit="short",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

OPERATOR_BLOCK_COMPLETION_TIME_PANEL = Panel(
id=79,
title="Block Completion Time Histogram (s)",
description="Time (in seconds) spent processing blocks to completion. If multiple blocks are generated per task, this is approximated by assuming each block took an equal amount of time to process. Larger bars means more blocks finished within that duration range.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_completion_time_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} s",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
),
],
unit="short",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

OPERATOR_BLOCK_SIZE_BYTES_PANEL = Panel(
id=80,
title="Block Size (Bytes) Histogram",
description="Size (in bytes) per block. Larger bars means more blocks are within that size range.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_size_bytes_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} bytes",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
),
],
unit="short",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

OPERATOR_BLOCK_SIZE_ROWS_PANEL = Panel(
id=81,
title="Block Size (Rows) Histogram",
description="Number of rows per block. Larger bars means more blocks are within that number of rows range.",
targets=[
Target(
expr='sum by (le) (max_over_time(ray_data_block_size_rows_bucket{{{global_filters}, operator=~"$Operator", le!="+Inf"}}[$__range]))',
legend="{{le}} rows",
template=TargetTemplate.HISTOGRAM_BAR_CHART,
),
],
unit="short",
fill=0,
stack=False,
template=PanelTemplate.BAR_CHART,
)

OPERATOR_PANELS = [
ROWS_OUTPUT_PER_SECOND_PANEL,
ALL_RESOURCES_UTILIZATION_PANEL,
COMBINED_INQUEUE_BLOCKS_PANEL,
OPERATOR_TASK_COMPLETION_TIME_PANEL,
OPERATOR_BLOCK_COMPLETION_TIME_PANEL,
OPERATOR_BLOCK_SIZE_BYTES_PANEL,
OPERATOR_BLOCK_SIZE_ROWS_PANEL,
]

DATA_GRAFANA_ROWS = [
Expand Down Expand Up @@ -1199,7 +1263,13 @@
Row(
title="Operator Panels",
id=108,
panels=[ALL_RESOURCES_UTILIZATION_PANEL],
panels=[
ALL_RESOURCES_UTILIZATION_PANEL,
OPERATOR_TASK_COMPLETION_TIME_PANEL,
OPERATOR_BLOCK_COMPLETION_TIME_PANEL,
OPERATOR_BLOCK_SIZE_BYTES_PANEL,
OPERATOR_BLOCK_SIZE_ROWS_PANEL
],
collapsed=True,
),
]
Expand Down