Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 4:30 PM
Duration
41.16 ms
Status
201
Response Size
7.6 KB
Error
No

Performance Breakdown

Database
22.0% (2 queries)
View Rendering
33.8%
Application Logic
44.2%
Other Operations
0.0%
Total Operations
6
Slowest Operation
41.16 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 46.6ms 93.2ms 139.7ms 186.3ms

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
layouts/application 34 ms 82.6%
home#errors 41 ms 100.0%
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... 21 ms 51.0%
home#errors 41 ms 100.0%
SELECT * FROM users WHERE id = ? 20 ms 48.6%
home/index 29 ms 70.5%