Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 11:28 PM
Duration
185.73 ms
Status
200
Response Size
61 KB
Error
No

Performance Breakdown

Database
5.7% (5 queries)
View Rendering
14.3%
Application Logic
80.0%
Other Operations
0.0%
Total Operations
21
Slowest Operation
185.73 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 406.5ms 813.1ms 1219.6ms 1626.1ms

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 186 ms 100.0%
home/index 21 ms 11.3%
SELECT id, name, email FROM users WHERE id = ? 27 ms 14.5%
home/index 30 ms 16.2%
users/index 14 ms 7.5%
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... 10 ms 5.4%
home#slow 186 ms 100.0%
home#slow 186 ms 100.0%
home#slow 186 ms 100.0%
home/index 12 ms 6.5%
layouts/application 39 ms 21.0%
home#slow 186 ms 100.0%
layouts/application 28 ms 15.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 11.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 10.2%
posts/show 27 ms 14.5%
home#slow 186 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 15 ms 8.1%
posts/show 38 ms 20.5%
home/index 24 ms 12.9%
home#slow 186 ms 100.0%