Request Details

Route
/api_complex GET
Timestamp
Sep 17, 2026 1:12 AM
Duration
272.89 ms
Status
204
Response Size
36 KB
Error
No

Performance Breakdown

Database
4.4% (6 queries)
View Rendering
4.7%
Application Logic
90.9%
Other Operations
0.0%
Total Operations
19
Slowest Operation
272.89 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 600.3ms 1200.5ms 1800.8ms 2401.1ms

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
posts/show 25 ms 9.2%
home/index 31 ms 11.4%
home#api_complex 273 ms 100.0%
layouts/application 29 ms 10.6%
home#api_complex 273 ms 100.0%
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... 20 ms 7.3%
layouts/application 14 ms 5.1%
DELETE FROM comments WHERE created_at < ? 5 ms 1.8%
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 4.8%
home#api_complex 273 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... 35 ms 12.8%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
posts/show 13 ms 4.8%
DELETE FROM posts WHERE id = ? 17 ms 6.2%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
home#api_complex 273 ms 100.0%
SELECT name FROM users 16 ms 5.9%