Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 10:52 PM
Duration
467.44 ms
Status
201
Response Size
85 KB
Error
No

Performance Breakdown

Database
7.3% (14 queries)
View Rendering
5.1%
Application Logic
87.6%
Other Operations
0.0%
Total Operations
28
Slowest Operation
467.44 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 800.7ms 1601.3ms 2402.0ms 3202.6ms

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 posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 16 ms 3.4%
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... 13 ms 2.8%
home#slow 467 ms 100.0%
users/index 36 ms 7.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 5.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 17 ms 3.6%
posts/show 22 ms 4.7%
SELECT id, name, email FROM users WHERE id = ? 12 ms 2.6%
layouts/application 24 ms 5.1%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 16 ms 3.4%
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... 1 ms 0.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 4.9%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 3 ms 0.6%
posts/show 5 ms 1.1%
SELECT name FROM users 18 ms 3.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 6.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 20 ms 4.3%
home#slow 467 ms 100.0%
layouts/application 35 ms 7.5%
home/index 15 ms 3.2%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 19 ms 4.1%
home#slow 467 ms 100.0%
home#slow 467 ms 100.0%
home#slow 467 ms 100.0%
layouts/application 16 ms 3.4%
home#slow 467 ms 100.0%
posts/show 10 ms 2.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 20 ms 4.3%