Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 9:16 AM
Duration
234.64 ms
Status
201
Response Size
47 KB
Error
No

Performance Breakdown

Database
17.4% (10 queries)
View Rendering
12.3%
Application Logic
70.3%
Other Operations
0.0%
Total Operations
17
Slowest Operation
234.64 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 250.2ms 500.5ms 750.7ms 1000.9ms

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
SELECT name FROM users 13 ms 5.5%
SELECT * FROM posts WHERE created_at > ? 34 ms 14.5%
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... 5 ms 2.1%
SELECT * FROM posts WHERE created_at > ? 25 ms 10.7%
DELETE FROM comments WHERE created_at < ? 4 ms 1.7%
home#api_complex 235 ms 100.0%
home/index 37 ms 15.8%
home#api_complex 235 ms 100.0%
home/index 35 ms 14.9%
posts/show 30 ms 12.8%
layouts/application 21 ms 8.9%
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... 21 ms 8.9%
home#api_complex 235 ms 100.0%
SELECT name FROM users 13 ms 5.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 9.4%
SELECT name FROM users 17 ms 7.2%
SELECT * FROM users WHERE id = ? 20 ms 8.5%