Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 10:24 PM
Duration
127.33 ms
Status
201
Response Size
36 KB
Error
No

Performance Breakdown

Database
4.7% (3 queries)
View Rendering
10.2%
Application Logic
85.1%
Other Operations
0.0%
Total Operations
19
Slowest Operation
127.33 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 374.1ms 748.2ms 1122.2ms 1496.3ms

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/index 39 ms 30.6%
posts/show 6 ms 4.7%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%
layouts/application 22 ms 17.3%
layouts/application 33 ms 25.9%
layouts/application 32 ms 25.1%
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... 31 ms 24.3%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%
SELECT * FROM users WHERE id = ? 13 ms 10.2%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%
users/index 20 ms 15.7%
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 > ? 27 ms 21.2%
home#api_complex 127 ms 100.0%
home#api_complex 127 ms 100.0%