Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 6:04 AM
Duration
446.45 ms
Status
201
Response Size
180 KB
Error
No

Performance Breakdown

Database
4.2% (6 queries)
View Rendering
12.1%
Application Logic
83.7%
Other Operations
0.0%
Total Operations
28
Slowest Operation
446.45 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 800.4ms 1600.9ms 2401.3ms 3201.7ms

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
users/index 16 ms 3.6%
home/index 21 ms 4.7%
home#slow 446 ms 100.0%
layouts/application 29 ms 6.5%
home/index 28 ms 6.3%
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 > ? 30 ms 6.7%
layouts/application 23 ms 5.2%
home#slow 446 ms 100.0%
layouts/application 30 ms 6.7%
home#slow 446 ms 100.0%
home/index 37 ms 8.3%
layouts/application 14 ms 3.1%
SELECT id, name FROM users WHERE email = ? 12 ms 2.7%
layouts/application 34 ms 7.6%
home#slow 446 ms 100.0%
home#slow 446 ms 100.0%
layouts/application 16 ms 3.6%
users/index 26 ms 5.8%
home/index 39 ms 8.7%
users/index 20 ms 4.5%
home#slow 446 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 35 ms 7.8%
posts/show 18 ms 4.0%
SELECT * FROM users WHERE id = ? 12 ms 2.7%
users/index 27 ms 6.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 13 ms 2.9%
posts/show 9 ms 2.0%
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... 34 ms 7.6%