Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 6:16 PM
Duration
59.1 ms
Status
204
Response Size
2.4 KB
Error
No

Performance Breakdown

Database
9.1% (3 queries)
View Rendering
16.0%
Application Logic
74.9%
Other Operations
0.0%
Total Operations
13
Slowest Operation
59.1 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 118.4ms 236.8ms 355.2ms 473.6ms

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... 5 ms 8.5%
home#errors 59 ms 100.0%
home#errors 59 ms 100.0%
home/index 7 ms 11.8%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 14 ms 23.7%
users/index 40 ms 67.7%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 24 ms 40.6%
home#errors 59 ms 100.0%
layouts/application 9 ms 15.2%
home#errors 59 ms 100.0%
home#errors 59 ms 100.0%
home#errors 59 ms 100.0%
posts/show 20 ms 33.8%