Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 11:07 AM
Duration
217.18 ms
Status
201
Response Size
49 KB
Error
No

Performance Breakdown

Database
7.3% (7 queries)
View Rendering
5.6%
Application Logic
87.1%
Other Operations
0.0%
Total Operations
23
Slowest Operation
217.18 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 560.9ms 1121.8ms 1682.7ms 2243.6ms

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
layouts/application 21 ms 9.7%
home#api_complex 217 ms 100.0%
home#api_complex 217 ms 100.0%
home#api_complex 217 ms 100.0%
layouts/application 8 ms 3.7%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 19 ms 8.7%
users/index 8 ms 3.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 1.8%
users/index 24 ms 11.1%
home#api_complex 217 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 24 ms 11.1%
home#api_complex 217 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 34 ms 15.7%
home#api_complex 217 ms 100.0%
posts/show 28 ms 12.9%
SELECT name FROM users 23 ms 10.6%
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... 27 ms 12.4%
home#api_complex 217 ms 100.0%
home#api_complex 217 ms 100.0%
layouts/application 19 ms 8.7%
home#api_complex 217 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... 32 ms 14.7%
users/index 18 ms 8.3%