Request Details

Route
/slow GET
Timestamp
Sep 19, 2026 9:32 AM
Duration
403.61 ms
Status
204
Response Size
210 KB
Error
No

Performance Breakdown

Database
5.0% (10 queries)
View Rendering
3.5%
Application Logic
91.4%
Other Operations
0.0%
Total Operations
23
Slowest Operation
403.61 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 882.7ms 1765.4ms 2648.1ms 3530.9ms

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
users/index 21 ms 5.2%
posts/show 29 ms 7.2%
SELECT * FROM users WHERE id = ? 4 ms 1.0%
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... 4 ms 1.0%
posts/show 31 ms 7.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 8 ms 2.0%
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 > ? 32 ms 7.9%
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... 30 ms 7.4%
home#slow 404 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... 17 ms 4.2%
home#slow 404 ms 100.0%
home#slow 404 ms 100.0%
home#slow 404 ms 100.0%
home#slow 404 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... 21 ms 5.2%
home#slow 404 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 16 ms 4.0%
home#slow 404 ms 100.0%
users/index 18 ms 4.5%
home#slow 404 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 24 ms 5.9%
home/index 25 ms 6.2%
SELECT name FROM users 22 ms 5.5%