# Measuring single cost centers

**URL:** <https://discourse.haskell.org/t/measuring-single-cost-centers/13511>\
**Category:** Learn\
**Created:** [January 9, 2026, 2:19pm UTC](https://discourse.haskell.org/t/measuring-single-cost-centers/13511 "2026-01-09T14:19:48Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![romes](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.haskell.org/romes/32/2912_2.png) [@romes](https://discourse.haskell.org/u/romes)\
**Post date:** [January 9, 2026, 3:01pm UTC](https://discourse.haskell.org/t/measuring-single-cost-centers/13511/2 "2026-01-09T15:01:17Z")

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I think you may be able to answer more profiling questions by loading your profile in [https://www.speedscope.app](https://www.speedscope.app)

Profile using the `+RTS -pj` option and then load the resulting `.prof` file into the speedscope website.

Some more notes about profiling: [GHC Profiling a Cabal Project with an Interactive Application - #2 by romes](https://discourse.haskell.org/t/ghc-profiling-a-cabal-project-with-an-interactive-application/10465/2)

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