Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 11:18 AM
Duration
125.17 ms
Status
204
Response Size
62 KB
Error
No

Performance Breakdown

Database
13.3% (6 queries)
View Rendering
18.0%
Application Logic
68.7%
Other Operations
0.0%
Total Operations
17
Slowest Operation
125.17 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 227.7ms 455.4ms 683.2ms 910.9ms

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/index 37 ms 29.6%
home#api_complex 125 ms 100.0%
users/index 26 ms 20.8%
home#api_complex 125 ms 100.0%
home/index 39 ms 31.2%
home#api_complex 125 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... 14 ms 11.2%
home#api_complex 125 ms 100.0%
home#api_complex 125 ms 100.0%
home/index 36 ms 28.8%
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... 21 ms 16.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 30 ms 24.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 28 ms 22.4%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 22 ms 17.6%
users/index 14 ms 11.2%
SELECT * FROM users WHERE id = ? 6 ms 4.8%
users/index 12 ms 9.6%