Request Details

Route
/error_prone GET
Timestamp
Sep 17, 2026 1:54 PM
Duration
18.59 ms
Status
201
Response Size
4.2 KB
Error
No

Performance Breakdown

Database
19.6% (2 queries)
View Rendering
54.5%
Application Logic
26.0%
Other Operations
0.0%
Total Operations
8
Slowest Operation
35.0 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 35.8ms 71.6ms 107.4ms 143.2ms

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
users/index 5 ms 26.9%
home#errors 19 ms 100.0%
layouts/application 28 ms 150.6%
posts/show 10 ms 53.8%
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... 17 ms 91.4%
users/index 35 ms 188.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 59.2%
home#errors 19 ms 100.0%