Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 7:59 AM
Duration
453.75 ms
Status
200
Response Size
140 KB
Error
No

Performance Breakdown

Database
4.0% (7 queries)
View Rendering
2.6%
Application Logic
93.4%
Other Operations
0.0%
Total Operations
19
Slowest Operation
453.75 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 849.8ms 1699.6ms 2549.4ms 3399.2ms

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
home/index 18 ms 4.0%
home#slow 454 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 25 ms 5.5%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 30 ms 6.6%
home#slow 454 ms 100.0%
posts/show 6 ms 1.3%
home#slow 454 ms 100.0%
home#slow 454 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 1.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 22 ms 4.8%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 24 ms 5.3%
layouts/application 17 ms 3.7%
home#slow 454 ms 100.0%
home/index 15 ms 3.3%
home#slow 454 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... 27 ms 6.0%
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... 1 ms 0.2%
home/index 31 ms 6.8%
home#slow 454 ms 100.0%