Request Details

Route
/error_prone GET
Timestamp
Sep 12, 2026 6:46 AM
Duration
31.03 ms
Status
200
Response Size
6.6 KB
Error
No

Performance Breakdown

Database
35.4% (5 queries)
View Rendering
64.6%
Application Logic
0.0%
Other Operations
0.0%
Total Operations
13
Slowest Operation
38.0 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
View
Database
0.0ms 60.8ms 121.5ms 182.3ms 243.0ms

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
layouts/application 12 ms 38.7%
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... 24 ms 77.3%
layouts/application 19 ms 61.2%
layouts/application 7 ms 22.6%
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 > ? 11 ms 35.4%
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... 18 ms 58.0%
users/index 21 ms 67.7%
home/index 38 ms 122.4%
posts/show 20 ms 64.4%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 14 ms 45.1%
users/index 32 ms 103.1%
SELECT COUNT(*) FROM comments WHERE post_id = ? 19 ms 61.2%
users/index 8 ms 25.8%