Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 6:42 AM
Duration
307.85 ms
Status
201
Response Size
170 KB
Error
No

Performance Breakdown

Database
4.3% (8 queries)
View Rendering
6.8%
Application Logic
88.9%
Other Operations
0.0%
Total Operations
24
Slowest Operation
307.85 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 693.0ms 1385.9ms 2078.9ms 2771.8ms

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 6 ms 1.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 11 ms 3.6%
home#slow 308 ms 100.0%
posts/show 25 ms 8.1%
SELECT * FROM posts WHERE created_at > ? 1 ms 0.3%
posts/show 34 ms 11.0%
users/index 38 ms 12.3%
users/index 32 ms 10.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 8.8%
SELECT * FROM posts WHERE created_at > ? 25 ms 8.1%
SELECT id, name FROM users WHERE email = ? 28 ms 9.1%
home#slow 308 ms 100.0%
layouts/application 15 ms 4.9%
home#slow 308 ms 100.0%
SELECT name FROM users 7 ms 2.3%
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... 12 ms 3.9%
users/index 23 ms 7.5%
home#slow 308 ms 100.0%
home#slow 308 ms 100.0%
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... 9 ms 2.9%
home#slow 308 ms 100.0%
home#slow 308 ms 100.0%
users/index 16 ms 5.2%
home#slow 308 ms 100.0%