Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 10:34 PM
Duration
56.34 ms
Status
201
Response Size
5.6 KB
Error
No

Performance Breakdown

Database
18.1% (7 queries)
View Rendering
21.9%
Application Logic
60.0%
Other Operations
0.0%
Total Operations
20
Slowest Operation
56.34 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 164.3ms 328.7ms 493.0ms 657.4ms

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
users/index 5 ms 8.9%
DELETE FROM comments WHERE created_at < ? 22 ms 39.1%
home#errors 56 ms 100.0%
posts/show 34 ms 60.4%
users/index 16 ms 28.4%
home/index 18 ms 32.0%
home#errors 56 ms 100.0%
users/index 39 ms 69.2%
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... 7 ms 12.4%
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... 21 ms 37.3%
SELECT name FROM users 9 ms 16.0%
home#errors 56 ms 100.0%
SELECT * FROM users WHERE id = ? 5 ms 8.9%
home#errors 56 ms 100.0%
home#errors 56 ms 100.0%
home#errors 56 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... 22 ms 39.1%
layouts/application 32 ms 56.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 58.6%
home#errors 56 ms 100.0%