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3 Commits

Author SHA1 Message Date
Jeremy Daer 231db6e742 Fix double _seconds suffix in GVL request wait metric name (#2539) 
Rename histogram from :request_wait_seconds to :request_wait so Yabeda's
unit: :seconds produces gvl_request_wait_seconds instead of
gvl_request_wait_seconds_seconds.
 2026-02-12 16:41:20 -08:00
Jeremy Daer a5a5a62169 Add GVL contention metrics via gvltools (#2538) 
* Add GVL contention metrics via gvltools and Yabeda

Expose per-request and process-wide GVL wait time as Prometheus metrics
to diagnose suspected GVL contention from Solid Cable and Action Cable
threads in Puma workers.

Metrics: gvl_request_wait_seconds (histogram), gvl_waiting_threads
(gauge), gvl_global_timer_total_seconds (gauge).

* Add unit: :seconds to GVL histogram for consistency
 2026-02-12 16:28:29 -08:00
Jorge Manrubia d30e327f1e Move yabeda/prometheus configuration to gem 2025-11-28 11:51:24 +01:00