Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 4:39 AM
Duration
79.93 ms
Status
200
Response Size
48 KB
Error
No

Performance Breakdown

Database
20.8% (9 queries)
View Rendering
14.3%
Application Logic
64.9%
Other Operations
0.0%
Total Operations
19
Slowest Operation
79.93 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 153.9ms 307.8ms 461.7ms 615.6ms

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#api_complex 80 ms 100.0%
home/index 13 ms 16.3%
users/index 24 ms 30.0%
posts/show 5 ms 6.3%
users/index 23 ms 28.8%
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... 4 ms 5.0%
home#api_complex 80 ms 100.0%
home#api_complex 80 ms 100.0%
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... 9 ms 11.3%
DELETE FROM posts WHERE id = ? 28 ms 35.0%
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... 33 ms 41.3%
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... 8 ms 10.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 6 ms 7.5%
home#api_complex 80 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 18.8%
home#api_complex 80 ms 100.0%
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... 17 ms 21.3%
SELECT name FROM users 8 ms 10.0%
home/index 23 ms 28.8%