Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 9:40 PM
Duration
194.05 ms
Status
204
Response Size
60 KB
Error
No

Performance Breakdown

Database
7.7% (5 queries)
View Rendering
13.3%
Application Logic
78.9%
Other Operations
0.0%
Total Operations
14
Slowest Operation
194.05 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 245.8ms 491.6ms 737.4ms 983.2ms

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.*, 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 10.8%
home/index 30 ms 15.5%
home/index 24 ms 12.4%
DELETE FROM posts WHERE id = ? 23 ms 11.9%
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 > ? 5 ms 2.6%
home#api_complex 194 ms 100.0%
layouts/application 37 ms 19.1%
home/index 13 ms 6.7%
layouts/application 27 ms 13.9%
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... 19 ms 9.8%
home#api_complex 194 ms 100.0%
home#api_complex 194 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 8 ms 4.1%
home#api_complex 194 ms 100.0%