Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 4:49 PM
Duration
159.75 ms
Status
204
Response Size
30 KB
Error
No

Performance Breakdown

Database
7.9% (4 queries)
View Rendering
3.6%
Application Logic
88.5%
Other Operations
0.0%
Total Operations
10
Slowest Operation
159.75 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 180.5ms 361.0ms 541.5ms 722.0ms

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
posts/show 11 ms 6.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 12 ms 7.5%
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... 11 ms 6.9%
layouts/application 15 ms 9.4%
home#api_complex 160 ms 100.0%
home#api_complex 160 ms 100.0%
home#api_complex 160 ms 100.0%
DELETE FROM posts WHERE id = ? 29 ms 18.2%
SELECT name FROM users 5 ms 3.1%
home#api_complex 160 ms 100.0%