Request Details

Route
/error_prone GET
Timestamp
Sep 12, 2026 7:44 PM
Duration
19.48 ms
Status
204
Response Size
2.3 KB
Error
No

Performance Breakdown

Database
22.4% (3 queries)
View Rendering
50.1%
Application Logic
27.6%
Other Operations
0.0%
Total Operations
15
Slowest Operation
39.0 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 88.4ms 176.7ms 265.1ms 353.4ms

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 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 > ? 22 ms 112.9%
home/index 8 ms 41.1%
home#errors 19 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 28 ms 143.7%
users/index 38 ms 195.1%
layouts/application 31 ms 159.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 148.9%
home#errors 19 ms 100.0%
users/index 17 ms 87.3%
posts/show 39 ms 200.2%
home#errors 19 ms 100.0%
users/index 33 ms 169.4%
home#errors 19 ms 100.0%
users/index 11 ms 56.5%
home#errors 19 ms 100.0%