Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 11:45 PM
Duration
222.54 ms
Status
204
Response Size
61 KB
Error
No

Performance Breakdown

Database
10.8% (12 queries)
View Rendering
12.8%
Application Logic
76.3%
Other Operations
0.0%
Total Operations
28
Slowest Operation
222.54 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 510.2ms 1020.4ms 1530.6ms 2040.8ms

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 posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 21 ms 9.4%
users/index 17 ms 7.6%
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... 5 ms 2.2%
home#slow 223 ms 100.0%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 13 ms 5.8%
SELECT name FROM users 22 ms 9.9%
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... 32 ms 14.4%
users/index 40 ms 18.0%
home/index 40 ms 18.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 4.9%
layouts/application 34 ms 15.3%
home/index 33 ms 14.8%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 20 ms 9.0%
SELECT * FROM users WHERE id = ? 20 ms 9.0%
home#slow 223 ms 100.0%
users/index 7 ms 3.1%
home#slow 223 ms 100.0%
home#slow 223 ms 100.0%
home#slow 223 ms 100.0%
layouts/application 30 ms 13.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 2 ms 0.9%
home#slow 223 ms 100.0%
users/index 39 ms 17.5%
SELECT * FROM users WHERE id = ? 22 ms 9.9%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 32 ms 14.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 9.4%
home#slow 223 ms 100.0%
home/index 22 ms 9.9%