Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 1:28 AM
Duration
289.71 ms
Status
201
Response Size
52 KB
Error
No

Performance Breakdown

Database
5.9% (8 queries)
View Rendering
2.4%
Application Logic
91.7%
Other Operations
0.0%
Total Operations
21
Slowest Operation
289.71 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 711.1ms 1422.2ms 2133.3ms 2844.4ms

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 21 ms 7.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 9.3%
home#api_complex 290 ms 100.0%
home#api_complex 290 ms 100.0%
home#api_complex 290 ms 100.0%
home#api_complex 290 ms 100.0%
posts/show 21 ms 7.2%
home/index 16 ms 5.5%
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... 6 ms 2.1%
home#api_complex 290 ms 100.0%
home#api_complex 290 ms 100.0%
home#api_complex 290 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... 14 ms 4.8%
home#api_complex 290 ms 100.0%
home/index 10 ms 3.5%
home#api_complex 290 ms 100.0%
SELECT COUNT(*) FROM comments WHERE post_id = ? 15 ms 5.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 11.0%
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 > ? 17 ms 5.9%
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 > ? 24 ms 8.3%
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... 34 ms 11.7%