Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 1:01 AM
Duration
193.83 ms
Status
201
Response Size
70 KB
Error
No

Performance Breakdown

Database
3.4% (4 queries)
View Rendering
9.9%
Application Logic
86.7%
Other Operations
0.0%
Total Operations
22
Slowest Operation
193.83 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 503.1ms 1006.2ms 1509.4ms 2012.5ms

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
posts/show 35 ms 18.1%
home#api_complex 194 ms 100.0%
home#api_complex 194 ms 100.0%
home#api_complex 194 ms 100.0%
home/index 27 ms 13.9%
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... 2 ms 1.0%
home#api_complex 194 ms 100.0%
home#api_complex 194 ms 100.0%
users/index 33 ms 17.0%
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... 30 ms 15.5%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 6 ms 3.1%
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 16.0%
posts/show 13 ms 6.7%
home#api_complex 194 ms 100.0%
users/index 13 ms 6.7%
layouts/application 8 ms 4.1%
layouts/application 15 ms 7.7%
home#api_complex 194 ms 100.0%
users/index 19 ms 9.8%
home#api_complex 194 ms 100.0%
layouts/application 36 ms 18.6%
home#api_complex 194 ms 100.0%