Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 11:09 PM
Duration
72.94 ms
Status
200
Response Size
4.7 KB
Error
No

Performance Breakdown

Database
12.0% (3 queries)
View Rendering
7.1%
Application Logic
80.8%
Other Operations
0.0%
Total Operations
12
Slowest Operation
72.94 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 157.9ms 315.8ms 473.7ms 631.6ms

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
UPDATE posts SET view_count = view_count + ? WHERE published = ? 30 ms 41.1%
home#errors 73 ms 100.0%
home#errors 73 ms 100.0%
users/index 26 ms 35.6%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 27 ms 37.0%
home#errors 73 ms 100.0%
home#errors 73 ms 100.0%
home#errors 73 ms 100.0%
posts/show 19 ms 26.0%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 19 ms 26.0%
home#errors 73 ms 100.0%
home#errors 73 ms 100.0%