Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 8:57 AM
Duration
239.6 ms
Status
201
Response Size
83 KB
Error
No

Performance Breakdown

Database
3.5% (5 queries)
View Rendering
2.2%
Application Logic
94.3%
Other Operations
0.0%
Total Operations
15
Slowest Operation
239.6 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 508.2ms 1016.4ms 1524.6ms 2032.8ms

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#api_complex 240 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 14 ms 5.8%
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 > ? 7 ms 2.9%
home#api_complex 240 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... 16 ms 6.7%
home#api_complex 240 ms 100.0%
layouts/application 23 ms 9.6%
SELECT * FROM posts WHERE created_at > ? 33 ms 13.8%
home#api_complex 240 ms 100.0%
home#api_complex 240 ms 100.0%
SELECT name FROM users 1 ms 0.4%
home#api_complex 240 ms 100.0%
posts/show 22 ms 9.2%
home#api_complex 240 ms 100.0%
home#api_complex 240 ms 100.0%