Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 2:19 PM
Duration
220.69 ms
Status
204
Response Size
66 KB
Error
No

Performance Breakdown

Database
6.6% (7 queries)
View Rendering
7.1%
Application Logic
86.2%
Other Operations
0.0%
Total Operations
19
Slowest Operation
220.69 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 448.0ms 895.9ms 1343.9ms 1791.8ms

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
users/index 26 ms 11.8%
home#api_complex 221 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 10.0%
home#api_complex 221 ms 100.0%
home#api_complex 221 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... 8 ms 3.6%
home#api_complex 221 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... 28 ms 12.7%
posts/show 34 ms 15.4%
home#api_complex 221 ms 100.0%
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 > ? 12 ms 5.4%
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... 13 ms 5.9%
home#api_complex 221 ms 100.0%
users/index 31 ms 14.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 12 ms 5.4%
SELECT * FROM posts WHERE created_at > ? 24 ms 10.9%
users/index 30 ms 13.6%
home#api_complex 221 ms 100.0%
posts/show 7 ms 3.2%