Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 5:22 AM
Duration
193.24 ms
Status
201
Response Size
44 KB
Error
No

Performance Breakdown

Database
13.3% (12 queries)
View Rendering
9.3%
Application Logic
77.4%
Other Operations
0.0%
Total Operations
25
Slowest Operation
193.24 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 436.9ms 873.8ms 1310.8ms 1747.7ms

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
users/index 34 ms 17.6%
SELECT * FROM posts WHERE created_at > ? 7 ms 3.6%
SELECT name FROM users 33 ms 17.1%
home#api_complex 193 ms 100.0%
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 > ? 1 ms 0.5%
posts/show 11 ms 5.7%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 13 ms 6.7%
home#api_complex 193 ms 100.0%
home/index 36 ms 18.6%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 20 ms 10.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 21 ms 10.9%
home#api_complex 193 ms 100.0%
users/index 39 ms 20.2%
home#api_complex 193 ms 100.0%
home#api_complex 193 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 8.8%
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 18.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 5.7%
layouts/application 6 ms 3.1%
home#api_complex 193 ms 100.0%
home/index 37 ms 19.1%
home#api_complex 193 ms 100.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 31 ms 16.0%
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 > ? 18 ms 9.3%
SELECT id, name FROM users WHERE email = ? 25 ms 12.9%