Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 12:10 AM
Duration
170.74 ms
Status
200
Response Size
57 KB
Error
No

Performance Breakdown

Database
18.3% (5 queries)
View Rendering
17.2%
Application Logic
64.5%
Other Operations
0.0%
Total Operations
12
Slowest Operation
170.74 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 132.4ms 264.7ms 397.1ms 529.5ms

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
layouts/application 7 ms 4.1%
home/index 33 ms 19.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 17.0%
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... 2 ms 1.2%
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... 22 ms 12.9%
home/index 11 ms 6.4%
users/index 32 ms 18.7%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 13 ms 7.6%
SELECT * FROM posts WHERE created_at > ? 31 ms 18.2%
home#api_complex 171 ms 100.0%
layouts/application 8 ms 4.7%
home#api_complex 171 ms 100.0%