# Changelog for hs-opentelemetry-instrumentation-ghc-metrics
## 1.0.0.0 - 2026-05-29
- Promoted to 1.0.0.0 for the hs-opentelemetry 1.0 release.
## 0.1.0.0
- Initial release.
- `OpenTelemetry.Instrumentation.GHCMetrics`: registers GHC RTS statistics as
`process.runtime.ghc.*` metrics (requires `+RTS -T`).
- `OpenTelemetry.Instrumentation.ProcessMetrics`: registers OS-level process metrics
following OTel semantic conventions (`process.cpu.time`, `process.memory.usage`,
`process.disk.io`, etc.). Linux-only metrics (page faults, context switches,
file descriptor count, thread count) require `/proc` filesystem.
- Attribute keys follow OTel semantic conventions: `cpu.mode`, `disk.io.direction`,
`system.paging.fault.type`, `process.context_switch.type`.