Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 5:28 AM
Duration
230.47 ms
Status
204
Response Size
44 KB
Error
No

Performance Breakdown

Database
10.7% (8 queries)
View Rendering
12.9%
Application Logic
76.4%
Other Operations
0.0%
Total Operations
23
Slowest Operation
230.47 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 376.8ms 753.7ms 1130.5ms 1507.4ms

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
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... 20 ms 8.7%
users/index 19 ms 8.2%
home/index 28 ms 12.1%
home#slow 230 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 32 ms 13.9%
posts/show 26 ms 11.3%
SELECT * FROM posts WHERE created_at > ? 8 ms 3.5%
layouts/application 39 ms 16.9%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 18 ms 7.8%
posts/show 8 ms 3.5%
users/index 6 ms 2.6%
home/index 17 ms 7.4%
layouts/application 39 ms 16.9%
home/index 5 ms 2.2%
home#slow 230 ms 100.0%
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... 35 ms 15.2%
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... 34 ms 14.8%
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 > ? 13 ms 5.6%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 1 ms 0.4%
home#slow 230 ms 100.0%
home#slow 230 ms 100.0%
users/index 7 ms 3.0%
home#slow 230 ms 100.0%