Request Details

Route
/api_complex GET
Timestamp
Sep 20, 2026 12:40 AM
Duration
228.54 ms
Status
204
Response Size
24 KB
Error
No

Performance Breakdown

Database
6.5% (4 queries)
View Rendering
14.1%
Application Logic
79.4%
Other Operations
0.0%
Total Operations
17
Slowest Operation
228.54 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 359.7ms 719.3ms 1079.0ms 1438.7ms

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
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... 17 ms 7.4%
home/index 34 ms 14.9%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 10.1%
home#api_complex 229 ms 100.0%
home/index 27 ms 11.8%
home#api_complex 229 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 18 ms 7.9%
posts/show 40 ms 17.5%
posts/show 15 ms 6.6%
home#api_complex 229 ms 100.0%
layouts/application 32 ms 14.0%
users/index 15 ms 6.6%
home#api_complex 229 ms 100.0%
layouts/application 20 ms 8.8%
home#api_complex 229 ms 100.0%
home/index 20 ms 8.8%
SELECT * FROM users WHERE id = ? 35 ms 15.3%