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Fix dotnet.thread_pool.thread.count metric to use UpDownCounter instead of Counter #121045

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Merged
merged 2 commits into from
Oct 24, 2025
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Fix dotnet.thread_pool.thread.count metric to use UpDownCounter instead of Counter #121045

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864374d
Initial plan
Copilot Oct 23, 2025
6a5fc06
Change thread pool thread count metric from Counter to UpDownCounter
Copilot Oct 23, 2025
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2 changes: 1 addition & 1 deletion ...ries/System.Diagnostics.DiagnosticSource/src/System/Diagnostics/Metrics/RuntimeMetrics.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,7 @@ static RuntimeMetrics()
unit: "{contention}",
description: "The number of times there was contention when trying to acquire a monitor lock since the process has started.");

s_meter.CreateObservableCounter(
s_meter.CreateObservableUpDownCounter(
"dotnet.thread_pool.thread.count",
() => (long)ThreadPool.ThreadCount,
unit: "{thread}",
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