Request Details

Route
/slow GET
Timestamp
Sep 17, 2026 12:28 AM
Duration
338.66 ms
Status
200
Response Size
100 KB
Error
No

Performance Breakdown

Database
7.5% (9 queries)
View Rendering
5.4%
Application Logic
87.1%
Other Operations
0.0%
Total Operations
19
Slowest Operation
338.66 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 485.8ms 971.7ms 1457.5ms 1943.3ms

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 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... 17 ms 5.0%
users/index 38 ms 11.2%
SELECT id, name, email FROM users WHERE id = ? 8 ms 2.4%
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... 32 ms 9.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 19 ms 5.6%
SELECT COUNT(*) FROM comments WHERE post_id = ? 6 ms 1.8%
layouts/application 8 ms 2.4%
SELECT * FROM users WHERE id = ? 13 ms 3.8%
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... 28 ms 8.3%
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... 19 ms 5.6%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 4 ms 1.2%
home#slow 339 ms 100.0%
posts/show 31 ms 9.2%
users/index 14 ms 4.1%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
layouts/application 13 ms 3.8%