Request Details

Route
/error_prone GET
Timestamp
Sep 20, 2026 1:14 AM
Duration
50.71 ms
Status
404
Response Size
1.1 KB
Error
No

Performance Breakdown

Database
30.8% (4 queries)
View Rendering
15.4%
Application Logic
53.8%
Other Operations
0.0%
Total Operations
7
Slowest Operation
50.71 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 47.1ms 94.2ms 141.3ms 188.4ms

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
SELECT * FROM users WHERE id = ? 21 ms 41.4%
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... 7 ms 13.8%
home#errors 51 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 10 ms 19.7%
users/index 29 ms 57.2%
SELECT name FROM users 20 ms 39.4%
home#errors 51 ms 100.0%