Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 8:39 PM
Duration
90.87 ms
Status
204
Response Size
72 KB
Error
No

Performance Breakdown

Database
15.6% (4 queries)
View Rendering
62.7%
Application Logic
21.7%
Other Operations
0.0%
Total Operations
13
Slowest Operation
90.87 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 104.5ms 208.9ms 313.4ms 417.9ms

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
home/index 37 ms 40.7%
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... 3 ms 3.3%
layouts/application 33 ms 36.3%
posts/show 39 ms 42.9%
layouts/application 39 ms 42.9%
layouts/application 40 ms 44.0%
layouts/application 6 ms 6.6%
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... 29 ms 31.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 23.1%
users/index 28 ms 30.8%
SELECT * FROM posts WHERE created_at > ? 12 ms 13.2%
home#api_complex 91 ms 100.0%
posts/show 40 ms 44.0%