Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 6:04 AM
Duration
100.28 ms
Status
201
Response Size
15 KB
Error
No

Performance Breakdown

Database
24.0% (5 queries)
View Rendering
23.7%
Application Logic
52.3%
Other Operations
0.0%
Total Operations
10
Slowest Operation
100.28 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 95.9ms 191.8ms 287.7ms 383.6ms

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 29 ms 28.9%
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... 12 ms 12.0%
SELECT * FROM posts WHERE created_at > ? 9 ms 9.0%
layouts/application 39 ms 38.9%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 25 ms 24.9%
posts/show 23 ms 22.9%
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 > ? 26 ms 25.9%
home#api_complex 100 ms 100.0%
home#api_complex 100 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 20 ms 19.9%