Request Details

Route
/slow GET
Timestamp
Sep 17, 2026 9:22 PM
Duration
279.02 ms
Status
204
Response Size
43 KB
Error
No

Performance Breakdown

Database
0.8% (1 query)
View Rendering
5.1%
Application Logic
94.1%
Other Operations
0.0%
Total Operations
15
Slowest Operation
279.02 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 667.3ms 1334.6ms 2001.9ms 2669.2ms

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#slow 279 ms 100.0%
home/index 28 ms 10.0%
home#slow 279 ms 100.0%
posts/show 38 ms 13.6%
home/index 26 ms 9.3%
users/index 19 ms 6.8%
home#slow 279 ms 100.0%
home#slow 279 ms 100.0%
home#slow 279 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... 21 ms 7.5%
home#slow 279 ms 100.0%
home#slow 279 ms 100.0%
home#slow 279 ms 100.0%
home/index 26 ms 9.3%
home#slow 279 ms 100.0%