Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 6:40 PM
Duration
254.73 ms
Status
201
Response Size
61 KB
Error
No

Performance Breakdown

Database
2.7% (2 queries)
View Rendering
5.4%
Application Logic
91.9%
Other Operations
0.0%
Total Operations
10
Slowest Operation
254.73 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 346.7ms 693.3ms 1040.0ms 1386.7ms

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 255 ms 100.0%
home/index 26 ms 10.2%
home#api_complex 255 ms 100.0%
users/index 34 ms 13.3%
home#api_complex 255 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... 25 ms 9.8%
home#api_complex 255 ms 100.0%
home#api_complex 255 ms 100.0%
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 5.1%
posts/show 15 ms 5.9%