Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 8:37 AM
Duration
212.5 ms
Status
204
Response Size
90 KB
Error
No

Performance Breakdown

Database
10.0% (10 queries)
View Rendering
11.0%
Application Logic
79.0%
Other Operations
0.0%
Total Operations
28
Slowest Operation
212.5 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 470.9ms 941.7ms 1412.6ms 1883.5ms

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 * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 5 ms 2.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 9 ms 4.2%
home#slow 212 ms 100.0%
home/index 18 ms 8.5%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 17 ms 8.0%
home#slow 212 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... 10 ms 4.7%
users/index 15 ms 7.1%
posts/show 21 ms 9.9%
home/index 23 ms 10.8%
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... 20 ms 9.4%
SELECT id, name FROM users WHERE email = ? 25 ms 11.8%
posts/show 16 ms 7.5%
SELECT name FROM users 28 ms 13.2%
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... 26 ms 12.2%
posts/show 23 ms 10.8%
home#slow 212 ms 100.0%
SELECT id, name FROM users WHERE email = ? 34 ms 16.0%
layouts/application 29 ms 13.6%
home#slow 212 ms 100.0%
SELECT * FROM users WHERE id = ? 14 ms 6.6%
home#slow 212 ms 100.0%
posts/show 12 ms 5.6%
posts/show 29 ms 13.6%
home#slow 212 ms 100.0%
home#slow 212 ms 100.0%
posts/show 13 ms 6.1%
home/index 9 ms 4.2%