Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 6:23 PM
Duration
618.3 ms
Status
201
Response Size
97 KB
Error
No

Performance Breakdown

Database
2.3% (10 queries)
View Rendering
5.0%
Application Logic
92.7%
Other Operations
0.0%
Total Operations
29
Slowest Operation
618.3 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 1500.7ms 3001.3ms 4502.0ms 6002.7ms

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
posts/show 35 ms 5.7%
users/index 11 ms 1.8%
posts/show 39 ms 6.3%
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... 14 ms 2.3%
home#slow 618 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 7 ms 1.1%
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... 26 ms 4.2%
home#slow 618 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... 13 ms 2.1%
home#slow 618 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 20 ms 3.2%
home#slow 618 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 20 ms 3.2%
users/index 28 ms 4.5%
users/index 21 ms 3.4%
home#slow 618 ms 100.0%
users/index 20 ms 3.2%
home#slow 618 ms 100.0%
users/index 34 ms 5.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 3 ms 0.5%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 15 ms 2.4%
users/index 37 ms 6.0%
posts/show 35 ms 5.7%
home#slow 618 ms 100.0%
home#slow 618 ms 100.0%
home/index 39 ms 6.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 1 ms 0.2%
SELECT name FROM users 20 ms 3.2%
home#slow 618 ms 100.0%