Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 5:55 AM
Duration
213.49 ms
Status
201
Response Size
59 KB
Error
No

Performance Breakdown

Database
3.3% (4 queries)
View Rendering
1.3%
Application Logic
95.3%
Other Operations
0.0%
Total Operations
15
Slowest Operation
213.49 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 503.9ms 1007.7ms 1511.6ms 2015.4ms

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 213 ms 100.0%
home/index 15 ms 7.0%
home#api_complex 213 ms 100.0%
home#api_complex 213 ms 100.0%
home#api_complex 213 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 19 ms 8.9%
home#api_complex 213 ms 100.0%
home#api_complex 213 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... 4 ms 1.9%
home#api_complex 213 ms 100.0%
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 > ? 29 ms 13.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 7.0%
home#api_complex 213 ms 100.0%
users/index 12 ms 5.6%
home#api_complex 213 ms 100.0%