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🎉 Adding performance logs flag

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Alejandro Alonso
2026-01-23 13:34:19 +01:00
parent 5da9bbea62
commit e3148ea20e
2 changed files with 39 additions and 34 deletions
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2
common/src/app/common/flags.cljc
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@@ -134,6 +134,8 @@
:subscriptions
:subscriptions-old
:inspect-styles
;; Enable performance logs in devconsole (disabled by default)
:perf-logs
;; Security layer middleware that filters request by fetch
;; metadata headers

71
frontend/src/app/main/data/event.cljs
View File

@@ -476,23 +476,24 @@
(when (and (some? (.-PerformanceObserver js/window)) (nil? @longtask-observer*))
(let [observer (js/PerformanceObserver.
(fn [list _]
(doseq [entry (.getEntries list)]
(let [dur (.-duration entry)
start (.-startTime entry)
attrib (.-attribution entry)
attrib-count (when attrib (.-length attrib))
first-attrib (when (and attrib-count (> attrib-count 0)) (aget attrib 0))
attrib-name (when first-attrib (.-name first-attrib))
attrib-ctype (when first-attrib (.-containerType first-attrib))
attrib-cid (when first-attrib (.-containerId first-attrib))
attrib-csrc (when first-attrib (.-containerSrc first-attrib))]
(when (contains? cf/flags :perf-logs)
(doseq [entry (.getEntries list)]
(let [dur (.-duration entry)
start (.-startTime entry)
attrib (.-attribution entry)
attrib-count (when attrib (.-length attrib))
first-attrib (when (and attrib-count (> attrib-count 0)) (aget attrib 0))
attrib-name (when first-attrib (.-name first-attrib))
attrib-ctype (when first-attrib (.-containerType first-attrib))
attrib-cid (when first-attrib (.-containerId first-attrib))
attrib-csrc (when first-attrib (.-containerSrc first-attrib))]
(.warn js/console (str "[perf] long task " (Math/round dur) "ms at " (Math/round start) "ms"
(when first-attrib
(str " attrib:name=" attrib-name
" ctype=" attrib-ctype
" cid=" attrib-cid
" csrc=" attrib-csrc))))))))]
(.warn js/console (str "[perf] long task " (Math/round dur) "ms at " (Math/round start) "ms"
(when first-attrib
(str " attrib:name=" attrib-name
" ctype=" attrib-ctype
" cid=" attrib-cid
" csrc=" attrib-csrc)))))))))]
(.observe observer #js{:entryTypes #js["longtask"]})
(reset! longtask-observer* observer))))
@@ -505,28 +506,30 @@
(let [last (atom (.now js/performance))
id (js/setInterval
(fn []
(let [now (.now js/performance)
expected (+ @last interval-ms)
drift (- now expected)
current-op @current-op*
measures (.getEntriesByType js/performance "measure")
mlen (.-length measures)
last-measure (when (> mlen 0) (aget measures (dec mlen)))
meas-name (when last-measure (.-name last-measure))
meas-detail (when last-measure (.-detail last-measure))
meas-count (when meas-detail (unchecked-get meas-detail "count"))]
(reset! last now)
(when (> drift threshold-ms)
(.warn js/console
(str "[perf] event loop stall: " (Math/round drift) "ms"
(when current-op (str " op=" current-op))
(when meas-name (str " last=" meas-name))
(when meas-count (str " count=" meas-count)))))))
(when (contains? cf/flags :perf-logs)
(let [now (.now js/performance)
expected (+ @last interval-ms)
drift (- now expected)
current-op @current-op*
measures (.getEntriesByType js/performance "measure")
mlen (.-length measures)
last-measure (when (> mlen 0) (aget measures (dec mlen)))
meas-name (when last-measure (.-name last-measure))
meas-detail (when last-measure (.-detail last-measure))
meas-count (when meas-detail (unchecked-get meas-detail "count"))]
(reset! last now)
(when (> drift threshold-ms)
(.warn js/console
(str "[perf] event loop stall: " (Math/round drift) "ms"
(when current-op (str " op=" current-op))
(when meas-name (str " last=" meas-name))
(when meas-count (str " count=" meas-count))))))))
interval-ms)]
(reset! stall-timer* id))))
(defn init!
"Install perf observers in dev builds. Safe to call multiple times."
"Install perf observers in dev builds. Safe to call multiple times.
Perf logs are disabled by default. Enable them with the :perf-logs flag in config."
[]
(when ^boolean js/goog.DEBUG
(install-long-task-observer!)