Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 4:34 PM
Duration
276.55 ms
Status
200
Response Size
60 KB
Error
No

Performance Breakdown

Database
16.0% (6 queries)
View Rendering
15.7%
Application Logic
68.3%
Other Operations
0.0%
Total Operations
14
Slowest Operation
276.55 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 202.5ms 405.0ms 607.6ms 810.1ms

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/index 6 ms 2.2%
posts/show 36 ms 13.0%
layouts/application 29 ms 10.5%
home/index 15 ms 5.4%
SELECT * FROM posts WHERE created_at > ? 29 ms 10.5%
home#api_complex 277 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... 24 ms 8.7%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 31 ms 11.2%
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... 20 ms 7.2%
home#api_complex 277 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 14 ms 5.1%
posts/show 15 ms 5.4%
posts/show 26 ms 9.4%
SELECT * FROM users WHERE id = ? 12 ms 4.3%