Request Details

Route
/api_complex GET
Timestamp
Sep 17, 2026 2:23 PM
Duration
174.08 ms
Status
201
Response Size
79 KB
Error
No

Performance Breakdown

Database
4.6% (4 queries)
View Rendering
11.6%
Application Logic
83.7%
Other Operations
0.0%
Total Operations
15
Slowest Operation
174.08 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 259.9ms 519.7ms 779.6ms 1039.4ms

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 16 ms 9.2%
SELECT id, name, email FROM users WHERE id = ? 6 ms 3.4%
home/index 22 ms 12.6%
home#api_complex 174 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... 10 ms 5.7%
SELECT * FROM users WHERE id = ? 11 ms 6.3%
home#api_complex 174 ms 100.0%
home#api_complex 174 ms 100.0%
home#api_complex 174 ms 100.0%
users/index 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... 21 ms 12.1%
users/index 32 ms 18.4%
home#api_complex 174 ms 100.0%
posts/show 39 ms 22.4%
users/index 7 ms 4.0%