Request Details

Route
/slow GET
Timestamp
Sep 18, 2026 12:59 AM
Duration
327.32 ms
Status
200
Response Size
100 KB
Error
No

Performance Breakdown

Database
7.7% (14 queries)
View Rendering
5.6%
Application Logic
86.7%
Other Operations
0.0%
Total Operations
29
Slowest Operation
327.32 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 660.6ms 1321.1ms 1981.7ms 2642.3ms

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 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... 8 ms 2.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 27 ms 8.2%
layouts/application 30 ms 9.2%
posts/show 13 ms 4.0%
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... 18 ms 5.5%
layouts/application 8 ms 2.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 18 ms 5.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 2.1%
home#slow 327 ms 100.0%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 8 ms 2.4%
SELECT * FROM users WHERE id = ? 13 ms 4.0%
home#slow 327 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 2 ms 0.6%
home#slow 327 ms 100.0%
posts/show 25 ms 7.6%
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 > ? 14 ms 4.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 3 ms 0.9%
home/index 14 ms 4.3%
home#slow 327 ms 100.0%
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... 24 ms 7.3%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 22 ms 6.7%
posts/show 28 ms 8.6%
users/index 20 ms 6.1%
SELECT * FROM posts WHERE created_at > ? 29 ms 8.9%
home#slow 327 ms 100.0%
layouts/application 10 ms 3.1%
home#slow 327 ms 100.0%
home#slow 327 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 10 ms 3.1%