Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 5:46 AM
Duration
200.93 ms
Status
204
Response Size
48 KB
Error
No

Performance Breakdown

Database
8.2% (7 queries)
View Rendering
16.7%
Application Logic
75.1%
Other Operations
0.0%
Total Operations
25
Slowest Operation
200.93 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 334.4ms 668.8ms 1003.2ms 1337.6ms

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 9 ms 4.5%
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... 35 ms 17.4%
posts/show 9 ms 4.5%
posts/show 38 ms 18.9%
SELECT id, name FROM users WHERE email = ? 14 ms 7.0%
home#api_complex 201 ms 100.0%
users/index 12 ms 6.0%
layouts/application 26 ms 12.9%
home/index 16 ms 8.0%
layouts/application 13 ms 6.5%
home#api_complex 201 ms 100.0%
home/index 12 ms 6.0%
home/index 18 ms 9.0%
layouts/application 6 ms 3.0%
home#api_complex 201 ms 100.0%
home#api_complex 201 ms 100.0%
layouts/application 18 ms 9.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 11 ms 5.5%
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... 33 ms 16.4%
SELECT * FROM users WHERE id = ? 5 ms 2.5%
users/index 32 ms 15.9%
posts/show 14 ms 7.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 3 ms 1.5%
home#api_complex 201 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... 9 ms 4.5%