Request Details

Route
/error_prone GET
Timestamp
Sep 11, 2026 9:29 PM
Duration
99.12 ms
Status
201
Response Size
7.7 KB
Error
No

Performance Breakdown

Database
33.3% (6 queries)
View Rendering
35.2%
Application Logic
31.5%
Other Operations
0.0%
Total Operations
12
Slowest Operation
99.12 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 78.8ms 157.6ms 236.3ms 315.1ms

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
layouts/application 14 ms 14.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 20 ms 20.2%
users/index 33 ms 33.3%
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... 34 ms 34.3%
home#errors 99 ms 100.0%
home/index 19 ms 19.2%
home/index 27 ms 27.2%
users/index 18 ms 18.2%
SELECT * FROM posts WHERE created_at > ? 7 ms 7.1%
SELECT name FROM users 29 ms 29.3%
DELETE FROM comments WHERE created_at < ? 1 ms 1.0%
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... 14 ms 14.1%