Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 1:39 AM
Duration
227.79 ms
Status
200
Response Size
14 KB
Error
No

Performance Breakdown

Database
18.2% (9 queries)
View Rendering
16.2%
Application Logic
65.6%
Other Operations
0.0%
Total Operations
19
Slowest Operation
227.79 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 260.6ms 521.2ms 781.8ms 1042.4ms

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 25 ms 11.0%
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 14.0%
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 > ? 19 ms 8.3%
SELECT name FROM users 13 ms 5.7%
home#api_complex 228 ms 100.0%
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... 34 ms 14.9%
posts/show 37 ms 16.2%
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 11.9%
SELECT * FROM users WHERE id = ? 10 ms 4.4%
layouts/application 13 ms 5.7%
home#api_complex 228 ms 100.0%
home/index 30 ms 13.2%
SELECT * FROM posts WHERE created_at > ? 7 ms 3.1%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 31 ms 13.6%
posts/show 37 ms 16.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 7.5%
home#api_complex 228 ms 100.0%
layouts/application 18 ms 7.9%
users/index 9 ms 4.0%