Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 1:23 AM
Duration
243.45 ms
Status
200
Response Size
18 KB
Error
No

Performance Breakdown

Database
6.8% (7 queries)
View Rendering
7.4%
Application Logic
85.8%
Other Operations
0.0%
Total Operations
25
Slowest Operation
243.45 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 709.1ms 1418.2ms 2127.3ms 2836.5ms

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/index 15 ms 6.2%
home#api_complex 243 ms 100.0%
home#api_complex 243 ms 100.0%
users/index 22 ms 9.0%
home#api_complex 243 ms 100.0%
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... 28 ms 11.5%
home/index 26 ms 10.7%
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 > ? 17 ms 7.0%
posts/show 25 ms 10.3%
layouts/application 40 ms 16.4%
users/index 24 ms 9.9%
home#api_complex 243 ms 100.0%
home#api_complex 243 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... 33 ms 13.6%
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 11.9%
home#api_complex 243 ms 100.0%
home#api_complex 243 ms 100.0%
home#api_complex 243 ms 100.0%
home#api_complex 243 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 16 ms 6.6%
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 > ? 35 ms 14.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 34 ms 14.0%
users/index 18 ms 7.4%
home#api_complex 243 ms 100.0%
layouts/application 40 ms 16.4%