Request Details

Route
/api_complex GET
Timestamp
Sep 11, 2026 12:22 PM
Duration
133.68 ms
Status
204
Response Size
70 KB
Error
No

Performance Breakdown

Database
29.9% (12 queries)
View Rendering
9.7%
Application Logic
60.4%
Other Operations
0.0%
Total Operations
22
Slowest Operation
133.68 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 221.4ms 442.9ms 664.3ms 885.7ms

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 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... 16 ms 12.0%
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... 15 ms 11.2%
home#api_complex 134 ms 100.0%
home#api_complex 134 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 30 ms 22.4%
home/index 21 ms 15.7%
posts/show 32 ms 23.9%
home/index 8 ms 6.0%
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... 27 ms 20.2%
posts/show 9 ms 6.7%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 20 ms 15.0%
home#api_complex 134 ms 100.0%
posts/show 9 ms 6.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 31 ms 23.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.7%
home#api_complex 134 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 25 ms 18.7%
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... 13 ms 9.7%
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... 25 ms 18.7%
layouts/application 7 ms 5.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 21.7%
SELECT * FROM posts WHERE created_at > ? 33 ms 24.7%