Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 9:23 AM
Duration
39.21 ms
Status
204
Response Size
1.6 KB
Error
No

Performance Breakdown

Database
22.4% (3 queries)
View Rendering
35.6%
Application Logic
41.9%
Other Operations
0.0%
Total Operations
11
Slowest Operation
39.21 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 70.2ms 140.3ms 210.5ms 280.6ms

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 users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 23 ms 58.7%
SELECT * FROM users WHERE id = ? 12 ms 30.6%
home/index 15 ms 38.3%
home#errors 39 ms 100.0%
users/index 28 ms 71.4%
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... 28 ms 71.4%
home#errors 39 ms 100.0%
users/index 24 ms 61.2%
home#errors 39 ms 100.0%
home/index 10 ms 25.5%
home/index 23 ms 58.7%