Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 10:30 AM
Duration
311.98 ms
Status
200
Response Size
23 KB
Error
No

Performance Breakdown

Database
3.4% (4 queries)
View Rendering
6.1%
Application Logic
90.5%
Other Operations
0.0%
Total Operations
15
Slowest Operation
311.98 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 517.2ms 1034.5ms 1551.7ms 2068.9ms

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
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... 31 ms 9.9%
home/index 18 ms 5.8%
home#api_complex 312 ms 100.0%
layouts/application 21 ms 6.7%
layouts/application 34 ms 10.9%
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... 13 ms 4.2%
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... 21 ms 6.7%
home#api_complex 312 ms 100.0%
home#api_complex 312 ms 100.0%
home#api_complex 312 ms 100.0%
home#api_complex 312 ms 100.0%
posts/show 36 ms 11.5%
home#api_complex 312 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... 6 ms 1.9%
posts/show 17 ms 5.4%