Request Details

Route
/api_complex GET
Timestamp
Sep 12, 2026 1:22 AM
Duration
131.21 ms
Status
200
Response Size
45 KB
Error
No

Performance Breakdown

Database
14.0% (7 queries)
View Rendering
9.3%
Application Logic
76.7%
Other Operations
0.0%
Total Operations
21
Slowest Operation
131.21 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 342.2ms 684.3ms 1026.5ms 1368.6ms

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
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 26 ms 19.8%
home#api_complex 131 ms 100.0%
home/index 6 ms 4.6%
SELECT * FROM posts WHERE created_at > ? 28 ms 21.3%
home#api_complex 131 ms 100.0%
home#api_complex 131 ms 100.0%
home/index 26 ms 19.8%
DELETE FROM comments WHERE created_at < ? 35 ms 26.7%
posts/show 14 ms 10.7%
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 > ? 26 ms 19.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 12 ms 9.1%
home#api_complex 131 ms 100.0%
users/index 29 ms 22.1%
home#api_complex 131 ms 100.0%
home#api_complex 131 ms 100.0%
home#api_complex 131 ms 100.0%
posts/show 34 ms 25.9%
SELECT * FROM posts WHERE created_at > ? 30 ms 22.9%
home#api_complex 131 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... 35 ms 26.7%
home/index 18 ms 13.7%