Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 12:47 PM
Duration
24.05 ms
Status
201
Response Size
6.2 KB
Error
No

Performance Breakdown

Database
29.9% (3 queries)
View Rendering
59.4%
Application Logic
10.7%
Other Operations
0.0%
Total Operations
9
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
Action
View
Database
0.0ms 56.0ms 112.0ms 168.0ms 224.1ms

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 comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 112.3%
posts/show 18 ms 74.8%
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 > ? 25 ms 103.9%
posts/show 26 ms 108.1%
home#errors 24 ms 100.0%
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 > ? 15 ms 62.4%
users/index 18 ms 74.8%
layouts/application 33 ms 137.2%
users/index 38 ms 158.0%