Request Details

Route
/api_complex GET
Timestamp
Sep 11, 2026 1:34 AM
Duration
271.85 ms
Status
201
Response Size
16 KB
Error
No

Performance Breakdown

Database
16.8% (8 queries)
View Rendering
17.3%
Application Logic
65.8%
Other Operations
0.0%
Total Operations
17
Slowest Operation
271.85 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 206.4ms 412.8ms 619.3ms 825.7ms

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 272 ms 100.0%
layouts/application 7 ms 2.6%
SELECT * FROM posts WHERE created_at > ? 20 ms 7.4%
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 > ? 20 ms 7.4%
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... 12 ms 4.4%
users/index 10 ms 3.7%
posts/show 25 ms 9.2%
SELECT name FROM users 2 ms 0.7%
posts/show 13 ms 4.8%
layouts/application 37 ms 13.6%
home/index 35 ms 12.9%
SELECT name FROM users 15 ms 5.5%
home#api_complex 272 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 21 ms 7.7%
SELECT * FROM posts WHERE created_at > ? 29 ms 10.7%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 20 ms 7.4%
users/index 16 ms 5.9%