Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 5:11 AM
Duration
176.59 ms
Status
201
Response Size
65 KB
Error
No

Performance Breakdown

Database
7.2% (4 queries)
View Rendering
24.4%
Application Logic
68.4%
Other Operations
0.0%
Total Operations
11
Slowest Operation
176.59 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 129.0ms 258.1ms 387.1ms 516.2ms

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#api_complex 177 ms 100.0%
home/index 10 ms 5.7%
users/index 7 ms 4.0%
layouts/application 40 ms 22.7%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 16 ms 9.1%
SELECT * FROM posts WHERE created_at > ? 18 ms 10.2%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 1 ms 0.6%
home/index 31 ms 17.6%
home#api_complex 177 ms 100.0%
home/index 38 ms 21.5%
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... 2 ms 1.1%