Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 8:01 PM
Duration
275.39 ms
Status
201
Response Size
78 KB
Error
No

Performance Breakdown

Database
2.4% (3 queries)
View Rendering
2.3%
Application Logic
95.3%
Other Operations
0.0%
Total Operations
15
Slowest Operation
275.39 ms

Request Trace

How to read this

Each row is a layer of your stack. Many short Database bars means N+1 queries — fix with includes(). A wide Action bar with little Database time means slow Ruby code. A wide View bar usually means a partial rendered in a loop.

Action
View
Database
Other
Action
View
Database
0.0ms 577.8ms 1155.6ms 1733.4ms 2311.1ms

Operations

How to use this

Sort by Impact to find your biggest wins. Click any row for details and optimisation suggestions. The same SQL appearing multiple times is an N+1 — fix with includes(). A single operation above 50% impact is your highest priority.

Operation Duration Impact Timeline Actions
home#slow 275 ms 100.0%
posts/show 14 ms 5.1%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 10 ms 3.6%
home#slow 275 ms 100.0%
home#slow 275 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 33 ms 12.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 12 ms 4.4%
home#slow 275 ms 100.0%
layouts/application 14 ms 5.1%
home#slow 275 ms 100.0%
home#slow 275 ms 100.0%
layouts/application 15 ms 5.4%
home#slow 275 ms 100.0%
home#slow 275 ms 100.0%
posts/show 10 ms 3.6%