Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 4:02 PM
Duration
163.92 ms
Status
204
Response Size
71 KB
Error
No

Performance Breakdown

Database
8.4% (7 queries)
View Rendering
14.8%
Application Logic
76.8%
Other Operations
0.0%
Total Operations
17
Slowest Operation
163.92 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 266.9ms 533.8ms 800.7ms 1067.6ms

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 164 ms 100.0%
posts/show 37 ms 22.6%
home#api_complex 164 ms 100.0%
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... 27 ms 16.5%
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... 32 ms 19.5%
users/index 27 ms 16.5%
posts/show 25 ms 15.3%
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... 3 ms 1.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 3.7%
home#api_complex 164 ms 100.0%
home#api_complex 164 ms 100.0%
home#api_complex 164 ms 100.0%
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... 10 ms 6.1%
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... 9 ms 5.5%
SELECT name FROM users 3 ms 1.8%
posts/show 37 ms 22.6%
layouts/application 32 ms 19.5%