Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 11:29 AM
Duration
484.14 ms
Status
200
Response Size
120 KB
Error
No

Performance Breakdown

Database
3.9% (12 queries)
View Rendering
3.7%
Application Logic
92.4%
Other Operations
0.0%
Total Operations
30
Slowest Operation
484.14 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 1310.4ms 2620.7ms 3931.1ms 5241.4ms

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#slow 484 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 31 ms 6.4%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 33 ms 6.8%
home#slow 484 ms 100.0%
home#slow 484 ms 100.0%
SELECT * FROM users WHERE id = ? 13 ms 2.7%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 22 ms 4.5%
users/index 24 ms 5.0%
home#slow 484 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 1.0%
home/index 17 ms 3.5%
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... 11 ms 2.3%
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 > ? 10 ms 2.1%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 5.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 2 ms 0.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 2.1%
users/index 27 ms 5.6%
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 > ? 10 ms 2.1%
layouts/application 35 ms 7.2%
home#slow 484 ms 100.0%
home/index 33 ms 6.8%
home#slow 484 ms 100.0%
home#slow 484 ms 100.0%
layouts/application 13 ms 2.7%
home#slow 484 ms 100.0%
posts/show 17 ms 3.5%
home#slow 484 ms 100.0%
home#slow 484 ms 100.0%
posts/show 29 ms 6.0%
SELECT * FROM users WHERE id = ? 33 ms 6.8%