Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 11:08 AM
Duration
237.23 ms
Status
200
Response Size
66 KB
Error
No

Performance Breakdown

Database
12.1% (5 queries)
View Rendering
6.0%
Application Logic
81.9%
Other Operations
0.0%
Total Operations
11
Slowest Operation
237.23 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 217.2ms 434.3ms 651.5ms 868.7ms

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
UPDATE posts SET view_count = view_count + ? WHERE published = ? 19 ms 8.0%
home#api_complex 237 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... 32 ms 13.5%
layouts/application 14 ms 5.9%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 1.7%
home#api_complex 237 ms 100.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 27 ms 11.4%
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... 23 ms 9.7%
home/index 27 ms 11.4%
home#api_complex 237 ms 100.0%
home/index 11 ms 4.6%