Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 7:02 AM
Duration
249.44 ms
Status
200
Response Size
12 KB
Error
No

Performance Breakdown

Database
4.7% (6 queries)
View Rendering
7.7%
Application Logic
87.5%
Other Operations
0.0%
Total Operations
19
Slowest Operation
249.44 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 427.4ms 854.8ms 1282.2ms 1709.6ms

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 249 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 13.2%
SELECT * FROM users WHERE id = ? 1 ms 0.4%
posts/show 9 ms 3.6%
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 9.6%
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... 3 ms 1.2%
home/index 34 ms 13.6%
home#api_complex 249 ms 100.0%
layouts/application 6 ms 2.4%
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... 7 ms 2.8%
home#api_complex 249 ms 100.0%
home#api_complex 249 ms 100.0%
home/index 11 ms 4.4%
layouts/application 18 ms 7.2%
users/index 22 ms 8.8%
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... 13 ms 5.2%
home#api_complex 249 ms 100.0%
users/index 32 ms 12.8%
home#api_complex 249 ms 100.0%