Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 3:28 PM
Duration
72.28 ms
Status
200
Response Size
6.6 KB
Error
No

Performance Breakdown

Database
12.5% (5 queries)
View Rendering
16.6%
Application Logic
70.9%
Other Operations
0.0%
Total Operations
19
Slowest Operation
72.28 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 203.8ms 407.6ms 611.5ms 815.3ms

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 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... 30 ms 41.5%
home#errors 72 ms 100.0%
home#errors 72 ms 100.0%
home#errors 72 ms 100.0%
home/index 30 ms 41.5%
home#errors 72 ms 100.0%
users/index 31 ms 42.9%
SELECT * FROM users WHERE id = ? 20 ms 27.7%
home#errors 72 ms 100.0%
home#errors 72 ms 100.0%
layouts/application 8 ms 11.1%
home#errors 72 ms 100.0%
home#errors 72 ms 100.0%
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... 9 ms 12.5%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 31 ms 42.9%
users/index 19 ms 26.3%
home/index 10 ms 13.8%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 12 ms 16.6%
posts/show 37 ms 51.2%