Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 3:16 AM
Duration
173.53 ms
Status
204
Response Size
79 KB
Error
No

Performance Breakdown

Database
3.1% (4 queries)
View Rendering
10.4%
Application Logic
86.5%
Other Operations
0.0%
Total Operations
15
Slowest Operation
173.53 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 300.8ms 601.6ms 902.4ms 1203.2ms

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... 2 ms 1.2%
home#api_complex 174 ms 100.0%
home#api_complex 174 ms 100.0%
home#api_complex 174 ms 100.0%
users/index 40 ms 23.1%
users/index 20 ms 11.5%
posts/show 27 ms 15.6%
home/index 26 ms 15.0%
users/index 12 ms 6.9%
home#api_complex 174 ms 100.0%
SELECT * FROM users WHERE id = ? 5 ms 2.9%
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... 11 ms 6.3%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 10.9%
home#api_complex 174 ms 100.0%
home#api_complex 174 ms 100.0%