Request Details

Route
/error_prone GET
Timestamp
Sep 23, 2026 6:07 AM
Duration
61.2 ms
Status
204
Response Size
3.6 KB
Error
No

Performance Breakdown

Database
15.5% (6 queries)
View Rendering
12.5%
Application Logic
72.0%
Other Operations
0.0%
Total Operations
16
Slowest Operation
61.2 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 127.5ms 255.1ms 382.6ms 510.2ms

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 32 ms 52.3%
home#errors 61 ms 100.0%
home#errors 61 ms 100.0%
DELETE FROM comments WHERE created_at < ? 18 ms 29.4%
DELETE FROM comments WHERE created_at < ? 7 ms 11.4%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 19 ms 31.0%
home#errors 61 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... 7 ms 11.4%
home/index 15 ms 24.5%
home#errors 61 ms 100.0%
users/index 7 ms 11.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 27 ms 44.1%
home#errors 61 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 1 ms 1.6%
home#errors 61 ms 100.0%
home/index 10 ms 16.3%