Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 4:42 PM
Duration
84.88 ms
Status
201
Response Size
4.4 KB
Error
No

Performance Breakdown

Database
14.3% (4 queries)
View Rendering
2.9%
Application Logic
82.7%
Other Operations
0.0%
Total Operations
12
Slowest Operation
84.88 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 179.5ms 359.1ms 538.6ms 718.2ms

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 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... 30 ms 35.3%
home#errors 85 ms 100.0%
home#errors 85 ms 100.0%
SELECT name FROM users 23 ms 27.1%
home#errors 85 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 20 ms 23.6%
home#errors 85 ms 100.0%
home#errors 85 ms 100.0%
home#errors 85 ms 100.0%
SELECT name FROM users 30 ms 35.3%
home#errors 85 ms 100.0%
users/index 21 ms 24.7%