Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 5:57 PM
Duration
124.07 ms
Status
201
Response Size
53 KB
Error
No

Performance Breakdown

Database
9.2% (3 queries)
View Rendering
14.9%
Application Logic
75.9%
Other Operations
0.0%
Total Operations
10
Slowest Operation
124.07 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 122.5ms 245.1ms 367.6ms 490.2ms

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 20 ms 16.1%
home#api_complex 124 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 13 ms 10.5%
home#api_complex 124 ms 100.0%
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... 23 ms 18.5%
home#api_complex 124 ms 100.0%
home/index 23 ms 18.5%
SELECT * FROM posts WHERE created_at > ? 9 ms 7.3%
posts/show 17 ms 13.7%
users/index 13 ms 10.5%