Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 12:11 PM
Duration
92.38 ms
Status
201
Response Size
4.8 KB
Error
No

Performance Breakdown

Database
10.5% (4 queries)
View Rendering
23.4%
Application Logic
66.1%
Other Operations
0.0%
Total Operations
11
Slowest Operation
92.38 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 104.8ms 209.6ms 314.4ms 419.1ms

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 users WHERE id = ? 16 ms 17.3%
SELECT id, name, email FROM users WHERE id = ? 5 ms 5.4%
home#errors 92 ms 100.0%
posts/show 40 ms 43.3%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 12 ms 13.0%
home#errors 92 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 11 ms 11.9%
users/index 19 ms 20.6%
home#errors 92 ms 100.0%
layouts/application 13 ms 14.1%
home/index 26 ms 28.1%