Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 7:39 PM
Duration
156.21 ms
Status
200
Response Size
74 KB
Error
No

Performance Breakdown

Database
17.4% (5 queries)
View Rendering
16.6%
Application Logic
65.9%
Other Operations
0.0%
Total Operations
13
Slowest Operation
156.21 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 177.7ms 355.3ms 533.0ms 710.6ms

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
layouts/application 31 ms 19.8%
SELECT * FROM posts WHERE created_at > ? 30 ms 19.2%
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 > ? 24 ms 15.4%
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... 28 ms 17.9%
SELECT * FROM users WHERE id = ? 32 ms 20.5%
posts/show 17 ms 10.9%
home#api_complex 156 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 6.4%
home/index 37 ms 23.7%
layouts/application 10 ms 6.4%
home#api_complex 156 ms 100.0%
home#api_complex 156 ms 100.0%
layouts/application 23 ms 14.7%