# profiler

CEFR C1 · Noun

Source: https://englishreference.com/word/profiler
Updated: 2026-10-19

## Definition

a tool that measures how a computer program runs and shows which parts are slow or use a lot of memory. You use it to find problems and make software faster.

For teachers: a software tool that measures execution time, memory use, or call frequency within a program to identify performance bottlenecks.

## Examples

- The developer uses a profiler to find slow code.
- The team runs a profiler on the new app to see why the checkout page takes five seconds to load.
- After weeks of unexplained slowdowns, the engineers attach a profiler to the production service and discover that a single unindexed database query consumes nearly eighty percent of response time.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.