Hugo has template performance metrics with the --templateMetrics flag. Here’s a snippet of the metrics for this site.
shell $ hugo --templateMetrics Start building sites … hugo v0.101.0+extended linux/amd64 BuildDate=unknown Template Metrics: cumulative average maximum duration duration duration count template ---------- -------- -------- ----- -------- 7.278303484s 49.177726ms 237.175705ms 148 partials/generate-feeds.html 7.22797312s 112.93708ms 246.988674ms 64 _default/single.html 6.982028147s 83.119382ms 245.262274ms 84 partials/navigator-right.html 6.683942678s 47.070018ms 237.223569ms 142 partials/web-ring.html 1.685089741s 5.561352ms 28.254398ms 303 _default/summary.html