Request Details

Route
/error_prone GET
Timestamp
Sep 11, 2026 6:57 AM
Duration
81.12 ms
Status
422
Response Size
1.8 KB
Error
No

Performance Breakdown

Database
8.3% (2 queries)
View Rendering
46.6%
Application Logic
45.0%
Other Operations
0.0%
Total Operations
11
Slowest Operation
81.12 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 90.1ms 180.1ms 270.2ms 360.2ms

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
home#errors 81 ms 100.0%
users/index 21 ms 25.9%
layouts/application 15 ms 18.5%
users/index 6 ms 7.4%
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 > ? 26 ms 32.1%
layouts/application 32 ms 39.4%
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 > ? 4 ms 4.9%
posts/show 37 ms 45.6%
home#errors 81 ms 100.0%
home/index 34 ms 41.9%
users/index 23 ms 28.4%