Request Details

Route
/error_prone GET
Timestamp
Sep 13, 2026 12:55 AM
Duration
23.45 ms
Status
200
Response Size
2 KB
Error
No

Performance Breakdown

Database
32.7% (6 queries)
View Rendering
18.7%
Application Logic
48.7%
Other Operations
0.0%
Total Operations
19
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 96.4ms 192.8ms 289.2ms 385.6ms

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
home/index 20 ms 85.3%
layouts/application 8 ms 34.1%
users/index 10 ms 42.6%
home#errors 23 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 8.5%
SELECT * FROM users WHERE id = ? 9 ms 38.4%
home#errors 23 ms 100.0%
SELECT name FROM users 30 ms 127.9%
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... 35 ms 149.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 72.5%
home#errors 23 ms 100.0%
home/index 8 ms 34.1%
home#errors 23 ms 100.0%
home#errors 23 ms 100.0%
home#errors 23 ms 100.0%
posts/show 26 ms 110.9%
home#errors 23 ms 100.0%
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... 33 ms 140.7%
home#errors 23 ms 100.0%