Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 9:58 PM
Duration
272.85 ms
Status
200
Response Size
64 KB
Error
No

Performance Breakdown

Database
3.5% (6 queries)
View Rendering
4.6%
Application Logic
91.9%
Other Operations
0.0%
Total Operations
22
Slowest Operation
272.85 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 667.9ms 1335.8ms 2003.8ms 2671.7ms

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 15 ms 5.5%
posts/show 26 ms 9.5%
home#api_complex 273 ms 100.0%
SELECT * FROM users WHERE id = ? 19 ms 7.0%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
DELETE FROM comments WHERE created_at < ? 24 ms 8.8%
layouts/application 20 ms 7.3%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
users/index 10 ms 3.7%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 3 ms 1.1%
layouts/application 25 ms 9.2%
home#api_complex 273 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 2.2%
home/index 18 ms 6.6%
home#api_complex 273 ms 100.0%
home/index 9 ms 3.3%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 6.2%
home#api_complex 273 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... 24 ms 8.8%