Request Details

Route
/error_prone GET
Timestamp
Sep 23, 2026 9:49 AM
Duration
23.8 ms
Status
204
Response Size
3.9 KB
Error
No

Performance Breakdown

Database
34.7% (4 queries)
View Rendering
41.7%
Application Logic
23.6%
Other Operations
0.0%
Total Operations
10
Slowest Operation
37.0 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 50.4ms 100.8ms 151.2ms 201.6ms

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 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 > ? 22 ms 92.4%
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... 18 ms 75.6%
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... 6 ms 25.2%
home#errors 24 ms 100.0%
home#errors 24 ms 100.0%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 24 ms 100.8%
home/index 29 ms 121.9%
home/index 5 ms 21.0%
users/index 37 ms 155.5%
posts/show 13 ms 54.6%