Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 5:43 PM
Duration
177.72 ms
Status
201
Response Size
24 KB
Error
No

Performance Breakdown

Database
6.3% (5 queries)
View Rendering
12.4%
Application Logic
81.3%
Other Operations
0.0%
Total Operations
21
Slowest Operation
177.72 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 382.8ms 765.5ms 1148.3ms 1531.0ms

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 5 ms 2.8%
SELECT * FROM users WHERE id = ? 5 ms 2.8%
users/index 32 ms 18.0%
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... 34 ms 19.1%
home#api_complex 178 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 35 ms 19.7%
layouts/application 23 ms 12.9%
posts/show 24 ms 13.5%
home#api_complex 178 ms 100.0%
users/index 16 ms 9.0%
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... 13 ms 7.3%
home#api_complex 178 ms 100.0%
home#api_complex 178 ms 100.0%
users/index 12 ms 6.8%
home#api_complex 178 ms 100.0%
home/index 10 ms 5.6%
home/index 35 ms 19.7%
home#api_complex 178 ms 100.0%
posts/show 33 ms 18.6%
home#api_complex 178 ms 100.0%
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... 10 ms 5.6%