Request Details

Route
/error_prone GET
Timestamp
Sep 10, 2026 6:36 PM
Duration
37.23 ms
Status
200
Response Size
4.2 KB
Error
No

Performance Breakdown

Database
19.6% (4 queries)
View Rendering
22.5%
Application Logic
58.0%
Other Operations
0.0%
Total Operations
16
Slowest Operation
40.0 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 112.4ms 224.8ms 337.2ms 449.6ms

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 37 ms 100.0%
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 > ? 24 ms 64.5%
SELECT * FROM posts WHERE created_at > ? 7 ms 18.8%
home#errors 37 ms 100.0%
home#errors 37 ms 100.0%
posts/show 10 ms 26.9%
layouts/application 40 ms 107.4%
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... 30 ms 80.6%
home#errors 37 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... 27 ms 72.5%
home/index 18 ms 48.4%
users/index 9 ms 24.2%
home#errors 37 ms 100.0%
home#errors 37 ms 100.0%
home#errors 37 ms 100.0%
users/index 24 ms 64.5%