Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 9:27 PM
Duration
312.93 ms
Status
200
Response Size
150 KB
Error
No

Performance Breakdown

Database
8.5% (6 queries)
View Rendering
18.5%
Application Logic
73.0%
Other Operations
0.0%
Total Operations
17
Slowest Operation
312.93 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 321.7ms 643.4ms 965.1ms 1286.8ms

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
posts/show 40 ms 12.8%
layouts/application 20 ms 6.4%
layouts/application 34 ms 10.9%
posts/show 30 ms 9.6%
users/index 21 ms 6.7%
users/index 28 ms 8.9%
home#slow 313 ms 100.0%
home#slow 313 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 13 ms 4.2%
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... 24 ms 7.7%
home#slow 313 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 29 ms 9.3%
users/index 26 ms 8.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 8 ms 2.6%
home/index 39 ms 12.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 9.3%
DELETE FROM comments WHERE created_at < ? 7 ms 2.2%