Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 12:35 PM
Duration
256.01 ms
Status
200
Response Size
17 KB
Error
No

Performance Breakdown

Database
7.2% (6 queries)
View Rendering
6.6%
Application Logic
86.2%
Other Operations
0.0%
Total Operations
18
Slowest Operation
256.01 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 445.3ms 890.5ms 1335.8ms 1781.1ms

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
home#api_complex 256 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... 20 ms 7.8%
posts/show 10 ms 3.9%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 35 ms 13.7%
home#api_complex 256 ms 100.0%
posts/show 31 ms 12.1%
home#api_complex 256 ms 100.0%
home#api_complex 256 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 14 ms 5.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 9.0%
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... 7 ms 2.7%
home#api_complex 256 ms 100.0%
posts/show 31 ms 12.1%
posts/show 11 ms 4.3%
home#api_complex 256 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 11.3%
home/index 26 ms 10.2%
users/index 8 ms 3.1%