Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 5:11 PM
Duration
140.64 ms
Status
201
Response Size
50 KB
Error
No

Performance Breakdown

Database
5.0% (2 queries)
View Rendering
4.7%
Application Logic
90.3%
Other Operations
0.0%
Total Operations
12
Slowest Operation
140.64 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 233.7ms 467.4ms 701.1ms 934.8ms

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 141 ms 100.0%
home/index 11 ms 7.8%
home#api_complex 141 ms 100.0%
home#api_complex 141 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... 35 ms 24.9%
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 > ? 12 ms 8.5%
home/index 7 ms 5.0%
home#api_complex 141 ms 100.0%
home/index 19 ms 13.5%
home#api_complex 141 ms 100.0%
layouts/application 7 ms 5.0%
home#api_complex 141 ms 100.0%