Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 4:25 PM
Duration
682.44 ms
Status
201
Response Size
150 KB
Error
No

Performance Breakdown

Database
6.6% (10 queries)
View Rendering
5.1%
Application Logic
88.3%
Other Operations
0.0%
Total Operations
18
Slowest Operation
682.44 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 579.8ms 1159.7ms 1739.5ms 2319.3ms

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
home/index 17 ms 2.5%
SELECT * FROM posts WHERE created_at > ? 1 ms 0.1%
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... 4 ms 0.6%
DELETE FROM posts WHERE id = ? 27 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... 7 ms 1.0%
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... 23 ms 3.4%
home#slow 682 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 3 ms 0.4%
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... 33 ms 4.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 3.2%
home#slow 682 ms 100.0%
layouts/application 10 ms 1.5%
home#slow 682 ms 100.0%
layouts/application 40 ms 5.9%
users/index 28 ms 4.1%
SELECT * FROM posts WHERE created_at > ? 27 ms 4.0%
DELETE FROM comments WHERE created_at < ? 7 ms 1.0%
users/index 23 ms 3.4%