Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 4:05 AM
Duration
289.44 ms
Status
204
Response Size
60 KB
Error
No

Performance Breakdown

Database
5.3% (7 queries)
View Rendering
8.5%
Application Logic
86.1%
Other Operations
0.0%
Total Operations
22
Slowest Operation
289.44 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 588.0ms 1176.0ms 1764.0ms 2352.1ms

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 32 ms 11.1%
home#api_complex 289 ms 100.0%
home#api_complex 289 ms 100.0%
home/index 20 ms 6.9%
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... 34 ms 11.7%
SELECT name FROM users 6 ms 2.1%
home#api_complex 289 ms 100.0%
home#api_complex 289 ms 100.0%
posts/show 31 ms 10.7%
home#api_complex 289 ms 100.0%
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 > ? 27 ms 9.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 7.3%
home/index 6 ms 2.1%
home#api_complex 289 ms 100.0%
layouts/application 37 ms 12.8%
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... 24 ms 8.3%
layouts/application 21 ms 7.3%
home#api_complex 289 ms 100.0%
home/index 33 ms 11.4%
SELECT * FROM posts WHERE created_at > ? 5 ms 1.7%
users/index 21 ms 7.3%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 8 ms 2.8%