Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 3:51 PM
Duration
134.65 ms
Status
200
Response Size
80 KB
Error
No

Performance Breakdown

Database
12.7% (5 queries)
View Rendering
8.0%
Application Logic
79.3%
Other Operations
0.0%
Total Operations
15
Slowest Operation
134.65 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 254.7ms 509.4ms 764.2ms 1018.9ms

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
home#api_complex 135 ms 100.0%
home#api_complex 135 ms 100.0%
home#api_complex 135 ms 100.0%
users/index 28 ms 20.8%
home/index 12 ms 8.9%
posts/show 25 ms 18.6%
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 > ? 27 ms 20.1%
home#api_complex 135 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... 18 ms 13.4%
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 > ? 32 ms 23.8%
SELECT * FROM posts WHERE created_at > ? 19 ms 14.1%
SELECT name FROM users 33 ms 24.5%
home#api_complex 135 ms 100.0%
home#api_complex 135 ms 100.0%
users/index 17 ms 12.6%