Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 3:29 AM
Duration
172.47 ms
Status
200
Response Size
54 KB
Error
No

Performance Breakdown

Database
10.1% (4 queries)
View Rendering
5.2%
Application Logic
84.8%
Other Operations
0.0%
Total Operations
10
Slowest Operation
172.47 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 203.5ms 406.9ms 610.4ms 813.9ms

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
layouts/application 18 ms 10.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 28 ms 16.2%
layouts/application 24 ms 13.9%
home#api_complex 172 ms 100.0%
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 > ? 3 ms 1.7%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 29 ms 16.8%
home#api_complex 172 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... 22 ms 12.8%