Request Details

Route
/api_complex GET
Timestamp
Sep 13, 2026 12:59 PM
Duration
286.7 ms
Status
204
Response Size
75 KB
Error
No

Performance Breakdown

Database
3.8% (2 queries)
View Rendering
25.9%
Application Logic
70.3%
Other Operations
0.0%
Total Operations
12
Slowest Operation
286.7 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 203.8ms 407.7ms 611.5ms 815.4ms

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
home#api_complex 287 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 2.4%
layouts/application 39 ms 13.6%
users/index 10 ms 3.5%
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... 24 ms 8.4%
home/index 24 ms 8.4%
posts/show 22 ms 7.7%
users/index 17 ms 5.9%
home/index 31 ms 10.8%
home/index 37 ms 12.9%
home/index 31 ms 10.8%
home#api_complex 287 ms 100.0%