Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 12:28 AM
Duration
417.45 ms
Status
204
Response Size
96 KB
Error
No

Performance Breakdown

Database
7.7% (14 queries)
View Rendering
6.1%
Application Logic
86.2%
Other Operations
0.0%
Total Operations
28
Slowest Operation
417.45 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 847.8ms 1695.6ms 2543.4ms 3391.1ms

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.* 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... 35 ms 8.4%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 3 ms 0.7%
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... 25 ms 6.0%
home#slow 417 ms 100.0%
home/index 30 ms 7.2%
home#slow 417 ms 100.0%
layouts/application 18 ms 4.3%
users/index 38 ms 9.1%
home#slow 417 ms 100.0%
SELECT COUNT(*) FROM comments WHERE post_id = ? 32 ms 7.7%
SELECT name FROM users 29 ms 6.9%
home/index 30 ms 7.2%
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... 3 ms 0.7%
home#slow 417 ms 100.0%
SELECT * FROM users WHERE id = ? 3 ms 0.7%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 6.9%
home#slow 417 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... 24 ms 5.7%
posts/show 40 ms 9.6%
home#slow 417 ms 100.0%
home#slow 417 ms 100.0%
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... 12 ms 2.9%
home/index 29 ms 6.9%
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... 14 ms 3.4%
users/index 22 ms 5.3%
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 > ? 33 ms 7.9%
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... 10 ms 2.4%
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 > ? 10 ms 2.4%