Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 9:55 PM
Duration
215.17 ms
Status
201
Response Size
54 KB
Error
No

Performance Breakdown

Database
6.8% (3 queries)
View Rendering
13.1%
Application Logic
80.0%
Other Operations
0.0%
Total Operations
12
Slowest Operation
215.17 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 201.6ms 403.3ms 604.9ms 806.5ms

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
users/index 13 ms 6.0%
layouts/application 34 ms 15.8%
SELECT id, name FROM users WHERE email = ? 23 ms 10.7%
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 7.4%
home#api_complex 215 ms 100.0%
layouts/application 9 ms 4.2%
users/index 19 ms 8.8%
posts/show 14 ms 6.5%
home/index 17 ms 7.9%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 16 ms 7.4%
home#api_complex 215 ms 100.0%
home#api_complex 215 ms 100.0%