# TopicsController#index

- **Period:** 12 Jun 17:08 UTC – 12 Jun 17:31 UTC
- **Throughput**: 0.76 / min
- **Average:** 43.0 ms

## Most Impactful Sections
| Kind | Location | Avg ms | Avg calls | Impact | Command |
| ---- | -------- | -----: | --------: | -----: | ------- |
| view | app/views/topics/index.html.erb | 7.53 | 0.94 | 16.52% |  |
| code | app/controllers/topics_controller.rb:9 | 4.5 | 1.0 | 10.45% | `TopicsController#index` |
| sql | app/views/topics/index.html.erb:15 | 1.35 | 2.72 | 8.52% | `SELECT DISTINCT "topics".* FROM "topics" INNER JOIN "essays" ON "essays"."topic…` |
| sql | app/views/layouts/application.html.erb:249 | 3.47 | 0.94 | 7.62% | `SELECT categories.*, sum(essays.hits_nb) as hits_sum FROM "categories" INNER JO…` |
| sql | app/views/layouts/application.html.erb:237 | 1.14 | 2.83 | 7.49% | `SELECT "essays".* FROM "essays" WHERE "essays"."status" = ? ORDER BY "essays"."…` |
| view | app/views/layouts/application.html.erb | 2.94 | 0.94 | 6.45% |  |
| sql | app/models/category.rb:177 | 2.82 | 0.94 | 6.20% | `SELECT "categories".* FROM "categories" INNER JOIN "groups" ON "groups"."id" = …` |
| sql | app/models/category.rb:112 | 0.75 | 2.83 | 4.90% | `SELECT "quiz_questions".* FROM "quiz_questions" WHERE "quiz_questions"."categor…` |
| queue | queue | 1.89 | 1.0 | 4.39% |  |
| sql | app/models/category.rb:163 | 1.47 | 0.94 | 3.23% | `SELECT "categories".* FROM "categories" INNER JOIN "groups" ON "groups"."id" = …` |
| gc | ruby/gc.c | 2.0 | 0.39 | 1.81% | `GC.start` |
| rack | /app/vendor/bundle/ruby/4.0.0/gems/warden-1.2.9/lib/warden/manager.rb:30 | 0.59 | 0.94 | 1.29% | `Warden::Manager` |
| sql | app/controllers/topics_controller.rb:11 | 0.56 | 1.0 | 1.29% | `SELECT "categories".* FROM "categories" WHERE "categories"."slug" = ? LIMIT ?` |

[View on RoRvsWild ↗](https://www.rorvswild.com/applications/135493/requests/TopicsController%23index?range=2026-06-12+17%3A08%3A04+UTC..2026-06-12+17%3A31%3A51+UTC)