Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 3:15 AM
Duration
91.56 ms
Status
200
Response Size
11 KB
Error
No

Performance Breakdown

Database
20.5% (8 queries)
View Rendering
22.3%
Application Logic
57.2%
Other Operations
0.0%
Total Operations
19
Slowest Operation
91.56 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 160.1ms 320.1ms 480.2ms 640.3ms

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
DELETE FROM posts WHERE id = ? 30 ms 32.8%
SELECT * FROM posts WHERE created_at > ? 10 ms 10.9%
layouts/application 26 ms 28.4%
home#api_complex 92 ms 100.0%
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... 3 ms 3.3%
home#api_complex 92 ms 100.0%
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... 6 ms 6.6%
layouts/application 13 ms 14.2%
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... 10 ms 10.9%
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 > ? 35 ms 38.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 38.2%
home/index 26 ms 28.4%
users/index 13 ms 14.2%
home#api_complex 92 ms 100.0%
posts/show 25 ms 27.3%
home#api_complex 92 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 2 ms 2.2%
layouts/application 5 ms 5.5%
layouts/application 35 ms 38.2%