Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 4:02 PM
Duration
93.83 ms
Status
204
Response Size
5 KB
Error
No

Performance Breakdown

Database
21.7% (5 queries)
View Rendering
20.2%
Application Logic
58.1%
Other Operations
0.0%
Total Operations
13
Slowest Operation
93.83 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 121.1ms 242.2ms 363.4ms 484.5ms

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
UPDATE posts SET view_count = view_count + ? WHERE published = ? 3 ms 3.2%
layouts/application 22 ms 23.4%
users/index 15 ms 16.0%
SELECT name FROM users 33 ms 35.2%
home#errors 94 ms 100.0%
DELETE FROM comments WHERE created_at < ? 31 ms 33.0%
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 > ? 25 ms 26.6%
layouts/application 37 ms 39.4%
home#errors 94 ms 100.0%
home#errors 94 ms 100.0%
layouts/application 19 ms 20.2%
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 > ? 13 ms 13.9%
posts/show 5 ms 5.3%