Request Details

Route
/api_complex GET
Timestamp
Sep 20, 2026 1:42 AM
Duration
264.48 ms
Status
204
Response Size
18 KB
Error
No

Performance Breakdown

Database
6.8% (6 queries)
View Rendering
0.8%
Application Logic
92.4%
Other Operations
0.0%
Total Operations
10
Slowest Operation
264.48 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 214.6ms 429.2ms 643.8ms 858.4ms

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 264 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... 5 ms 1.9%
SELECT * FROM posts WHERE created_at > ? 15 ms 5.7%
SELECT * FROM posts WHERE created_at > ? 5 ms 1.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 7.2%
home#api_complex 264 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 3.8%
home#api_complex 264 ms 100.0%
users/index 7 ms 2.6%
SELECT name FROM users 4 ms 1.5%