Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 12:31 AM
Duration
50.58 ms
Status
204
Response Size
3.1 KB
Error
No

Performance Breakdown

Database
35.9% (6 queries)
View Rendering
15.9%
Application Logic
48.1%
Other Operations
0.0%
Total Operations
14
Slowest Operation
50.58 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 105.1ms 210.2ms 315.2ms 420.3ms

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 posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 69.2%
home#errors 51 ms 100.0%
posts/show 25 ms 49.4%
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 > ? 6 ms 11.9%
home/index 10 ms 19.8%
home#errors 51 ms 100.0%
users/index 9 ms 17.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 63.3%
DELETE FROM posts WHERE id = ? 28 ms 55.4%
home#errors 51 ms 100.0%
home#errors 51 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 65.2%
DELETE FROM comments WHERE created_at < ? 17 ms 33.6%
home/index 23 ms 45.5%