Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 12:08 AM
Duration
202.6 ms
Status
201
Response Size
54 KB
Error
No

Performance Breakdown

Database
10.9% (10 queries)
View Rendering
7.9%
Application Logic
81.2%
Other Operations
0.0%
Total Operations
25
Slowest Operation
202.6 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 436.8ms 873.6ms 1310.4ms 1747.2ms

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 203 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 16 ms 7.9%
posts/show 14 ms 6.9%
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 > ? 5 ms 2.5%
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... 19 ms 9.4%
home#api_complex 203 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 25 ms 12.3%
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... 16 ms 7.9%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 8 ms 3.9%
SELECT COUNT(*) FROM comments WHERE post_id = ? 33 ms 16.3%
layouts/application 15 ms 7.4%
home/index 31 ms 15.3%
SELECT name FROM users 34 ms 16.8%
home/index 17 ms 8.4%
home/index 16 ms 7.9%
home#api_complex 203 ms 100.0%
home#api_complex 203 ms 100.0%
home/index 15 ms 7.4%
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... 32 ms 15.8%
home#api_complex 203 ms 100.0%
home#api_complex 203 ms 100.0%
layouts/application 23 ms 11.4%
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... 3 ms 1.5%
home/index 7 ms 3.5%
home#api_complex 203 ms 100.0%