Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 7:02 AM
Duration
155.76 ms
Status
201
Response Size
49 KB
Error
No

Performance Breakdown

Database
14.6% (10 queries)
View Rendering
11.6%
Application Logic
73.8%
Other Operations
0.0%
Total Operations
22
Slowest Operation
155.76 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 316.6ms 633.3ms 949.9ms 1266.6ms

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
home/index 32 ms 20.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 32 ms 20.5%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 2 ms 1.3%
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... 29 ms 18.6%
home/index 14 ms 9.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 10 ms 6.4%
SELECT * FROM users WHERE id = ? 10 ms 6.4%
layouts/application 32 ms 20.5%
layouts/application 7 ms 4.5%
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... 2 ms 1.3%
home#api_complex 156 ms 100.0%
home#api_complex 156 ms 100.0%
posts/show 30 ms 19.3%
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... 18 ms 11.6%
home#api_complex 156 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 21 ms 13.5%
SELECT name FROM users 32 ms 20.5%
SELECT name FROM users 29 ms 18.6%
home/index 32 ms 20.5%
home#api_complex 156 ms 100.0%
home#api_complex 156 ms 100.0%
home#api_complex 156 ms 100.0%