Request Details

Route
/error_prone GET
Timestamp
Sep 15, 2026 6:46 PM
Duration
22.18 ms
Status
204
Response Size
7.6 KB
Error
No

Performance Breakdown

Database
41.8% (4 queries)
View Rendering
16.8%
Application Logic
41.4%
Other Operations
0.0%
Total Operations
11
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 67.0ms 134.0ms 200.9ms 267.9ms

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 COUNT(*) FROM comments WHERE post_id = ? 33 ms 148.8%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 27 ms 121.7%
layouts/application 40 ms 180.3%
home#errors 22 ms 100.0%
home#errors 22 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 121.7%
users/index 5 ms 22.5%
home#errors 22 ms 100.0%
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... 25 ms 112.7%
home#errors 22 ms 100.0%
home#errors 22 ms 100.0%