Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 9:24 AM
Duration
253.24 ms
Status
200
Response Size
56 KB
Error
No

Performance Breakdown

Database
12.3% (7 queries)
View Rendering
5.4%
Application Logic
82.2%
Other Operations
0.0%
Total Operations
13
Slowest Operation
253.24 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 230.9ms 461.9ms 692.8ms 923.7ms

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
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... 21 ms 8.3%
home#api_complex 253 ms 100.0%
layouts/application 16 ms 6.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 9 ms 3.6%
SELECT * FROM users WHERE id = ? 32 ms 12.6%
home#api_complex 253 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 1 ms 0.4%
layouts/application 29 ms 11.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 9.9%
users/index 5 ms 2.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 9.1%
home#api_complex 253 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 3 ms 1.2%