Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 11:43 PM
Duration
172.41 ms
Status
201
Response Size
69 KB
Error
No

Performance Breakdown

Database
5.6% (7 queries)
View Rendering
7.2%
Application Logic
87.2%
Other Operations
0.0%
Total Operations
24
Slowest Operation
172.41 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 494.3ms 988.6ms 1482.9ms 1977.1ms

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
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 9.9%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 29 ms 16.8%
home#api_complex 172 ms 100.0%
layouts/application 15 ms 8.7%
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... 4 ms 2.3%
home#api_complex 172 ms 100.0%
posts/show 28 ms 16.2%
users/index 18 ms 10.4%
SELECT * FROM posts WHERE created_at > ? 34 ms 19.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 8.7%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
home#api_complex 172 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 4 ms 2.3%
users/index 40 ms 23.2%
users/index 6 ms 3.5%
home#api_complex 172 ms 100.0%
users/index 26 ms 15.1%
posts/show 10 ms 5.8%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 7 ms 4.1%