Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 4:49 PM
Duration
237.0 ms
Status
204
Response Size
14 KB
Error
No

Performance Breakdown

Database
11.0% (9 queries)
View Rendering
8.9%
Application Logic
80.2%
Other Operations
0.0%
Total Operations
21
Slowest Operation
237.0 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 369.5ms 739.0ms 1108.5ms 1478.0ms

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 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... 30 ms 12.7%
layouts/application 27 ms 11.4%
SELECT id, name FROM users WHERE email = ? 30 ms 12.7%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 16 ms 6.8%
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 1.3%
home#api_complex 237 ms 100.0%
home#api_complex 237 ms 100.0%
layouts/application 7 ms 3.0%
users/index 11 ms 4.6%
layouts/application 18 ms 7.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 1.7%
home#api_complex 237 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 12 ms 5.1%
home#api_complex 237 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 15 ms 6.3%
home#api_complex 237 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... 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... 31 ms 13.1%
users/index 30 ms 12.7%
users/index 22 ms 9.3%
layouts/application 16 ms 6.8%