Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 9:52 PM
Duration
273.03 ms
Status
204
Response Size
81 KB
Error
No

Performance Breakdown

Database
2.3% (4 queries)
View Rendering
5.2%
Application Logic
92.5%
Other Operations
0.0%
Total Operations
18
Slowest Operation
273.03 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 590.1ms 1180.1ms 1770.2ms 2360.2ms

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 273 ms 100.0%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
posts/show 32 ms 11.7%
home#api_complex 273 ms 100.0%
home/index 20 ms 7.3%
home#api_complex 273 ms 100.0%
layouts/application 40 ms 14.7%
home#api_complex 273 ms 100.0%
home/index 9 ms 3.3%
home#api_complex 273 ms 100.0%
posts/show 14 ms 5.1%
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... 7 ms 2.6%
users/index 7 ms 2.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 2.6%
SELECT * FROM posts WHERE created_at > ? 20 ms 7.3%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 20 ms 7.3%