Request Details

Route
/error_prone GET
Timestamp
Sep 11, 2026 10:24 AM
Duration
87.35 ms
Status
204
Response Size
2.2 KB
Error
No

Performance Breakdown

Database
3.7% (3 queries)
View Rendering
18.7%
Application Logic
77.7%
Other Operations
0.0%
Total Operations
19
Slowest Operation
87.35 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 253.0ms 506.1ms 759.1ms 1012.2ms

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
posts/show 13 ms 14.9%
home/index 39 ms 44.6%
home#errors 87 ms 100.0%
home#errors 87 ms 100.0%
layouts/application 17 ms 19.5%
home#errors 87 ms 100.0%
home#errors 87 ms 100.0%
layouts/application 26 ms 29.8%
home#errors 87 ms 100.0%
home#errors 87 ms 100.0%
users/index 16 ms 18.3%
home#errors 87 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... 2 ms 2.3%
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... 2 ms 2.3%
posts/show 40 ms 45.8%
home#errors 87 ms 100.0%
home#errors 87 ms 100.0%
home/index 38 ms 43.5%
SELECT * FROM users WHERE id = ? 33 ms 37.8%