Request Details

Route
/slow GET
Timestamp
Sep 19, 2026 2:44 AM
Duration
343.62 ms
Status
201
Response Size
94 KB
Error
No

Performance Breakdown

Database
2.7% (5 queries)
View Rendering
7.5%
Application Logic
89.9%
Other Operations
0.0%
Total Operations
15
Slowest Operation
343.62 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 478.0ms 956.1ms 1434.1ms 1912.1ms

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 344 ms 100.0%
home#slow 344 ms 100.0%
users/index 26 ms 7.6%
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... 11 ms 3.2%
SELECT * FROM posts WHERE created_at > ? 2 ms 0.6%
SELECT * FROM users WHERE id = ? 21 ms 6.1%
home#slow 344 ms 100.0%
home#slow 344 ms 100.0%
DELETE FROM posts WHERE id = ? 5 ms 1.5%
users/index 32 ms 9.3%
SELECT name FROM users 12 ms 3.5%
posts/show 18 ms 5.2%
layouts/application 36 ms 10.5%
home#slow 344 ms 100.0%
users/index 31 ms 9.0%