Request Details

Route
/slow GET
Timestamp
Sep 15, 2026 8:55 PM
Duration
613.36 ms
Status
201
Response Size
180 KB
Error
No

Performance Breakdown

Database
1.7% (7 queries)
View Rendering
5.5%
Application Logic
92.8%
Other Operations
0.0%
Total Operations
28
Slowest Operation
613.36 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 1157.1ms 2314.2ms 3471.4ms 4628.5ms

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
home#slow 613 ms 100.0%
users/index 27 ms 4.4%
home/index 14 ms 2.3%
posts/show 15 ms 2.4%
home#slow 613 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 1.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 16 ms 2.6%
users/index 30 ms 4.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 5 ms 0.8%
layouts/application 9 ms 1.5%
layouts/application 35 ms 5.7%
SELECT name FROM users 6 ms 1.0%
posts/show 10 ms 1.6%
home/index 7 ms 1.1%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 7 ms 1.1%
layouts/application 28 ms 4.6%
posts/show 27 ms 4.4%
home#slow 613 ms 100.0%
posts/show 18 ms 2.9%
layouts/application 5 ms 0.8%
home#slow 613 ms 100.0%
posts/show 10 ms 1.6%
home#slow 613 ms 100.0%
home/index 20 ms 3.3%
home#slow 613 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 4.7%
home#slow 613 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 10 ms 1.6%