Request Details

Route
/api_complex GET
Timestamp
Sep 20, 2026 8:38 PM
Duration
122.26 ms
Status
200
Response Size
32 KB
Error
No

Performance Breakdown

Database
12.1% (8 queries)
View Rendering
16.5%
Application Logic
71.4%
Other Operations
0.0%
Total Operations
22
Slowest Operation
122.26 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 256.9ms 513.8ms 770.7ms 1027.6ms

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#api_complex 122 ms 100.0%
SELECT * FROM users WHERE id = ? 34 ms 27.8%
posts/show 22 ms 18.0%
home#api_complex 122 ms 100.0%
home/index 21 ms 17.2%
SELECT name FROM users 35 ms 28.6%
home#api_complex 122 ms 100.0%
posts/show 12 ms 9.8%
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... 11 ms 9.0%
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... 5 ms 4.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 13 ms 10.6%
home#api_complex 122 ms 100.0%
home/index 29 ms 23.7%
layouts/application 6 ms 4.9%
home#api_complex 122 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... 3 ms 2.5%
users/index 14 ms 11.5%
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... 4 ms 3.3%
posts/show 34 ms 27.8%
home#api_complex 122 ms 100.0%
layouts/application 32 ms 26.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 15.5%