Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 6:41 AM
Duration
145.89 ms
Status
200
Response Size
35 KB
Error
No

Performance Breakdown

Database
19.4% (10 queries)
View Rendering
27.4%
Application Logic
53.3%
Other Operations
0.0%
Total Operations
22
Slowest Operation
145.89 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 205.4ms 410.8ms 616.2ms 821.7ms

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
layouts/application 38 ms 26.0%
SELECT * FROM users WHERE id = ? 12 ms 8.2%
posts/show 16 ms 11.0%
users/index 35 ms 24.0%
layouts/application 13 ms 8.9%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 32 ms 21.9%
home/index 31 ms 21.2%
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... 12 ms 8.2%
home#api_complex 146 ms 100.0%
SELECT name FROM users 2 ms 1.4%
home#api_complex 146 ms 100.0%
home#api_complex 146 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 21 ms 14.4%
home/index 25 ms 17.1%
users/index 25 ms 17.1%
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... 2 ms 1.4%
users/index 36 ms 24.7%
SELECT * FROM posts WHERE created_at > ? 6 ms 4.1%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 21 ms 14.4%
SELECT name FROM users 35 ms 24.0%
SELECT * FROM users WHERE id = ? 16 ms 11.0%
users/index 6 ms 4.1%