Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 1:00 PM
Duration
139.75 ms
Status
201
Response Size
44 KB
Error
No

Performance Breakdown

Database
18.4% (11 queries)
View Rendering
4.7%
Application Logic
77.0%
Other Operations
0.0%
Total Operations
20
Slowest Operation
139.75 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 272.4ms 544.7ms 817.1ms 1089.5ms

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#api_complex 140 ms 100.0%
layouts/application 20 ms 14.3%
home#api_complex 140 ms 100.0%
SELECT * FROM users WHERE id = ? 8 ms 5.7%
home/index 24 ms 17.2%
home#api_complex 140 ms 100.0%
home#api_complex 140 ms 100.0%
SELECT * FROM users WHERE id = ? 6 ms 4.3%
layouts/application 7 ms 5.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 17.9%
home#api_complex 140 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 > ? 21 ms 15.0%
home#api_complex 140 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 15 ms 10.7%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 11 ms 7.9%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 32 ms 22.9%
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... 15 ms 10.7%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 33 ms 23.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 16.5%
SELECT * FROM posts WHERE created_at > ? 11 ms 7.9%