Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 1:28 AM
Duration
369.79 ms
Status
204
Response Size
110 KB
Error
No

Performance Breakdown

Database
7.5% (12 queries)
View Rendering
7.3%
Application Logic
85.2%
Other Operations
0.0%
Total Operations
28
Slowest Operation
369.79 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 651.2ms 1302.4ms 1953.6ms 2604.7ms

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
posts/show 17 ms 4.6%
home/index 17 ms 4.6%
home#slow 370 ms 100.0%
SELECT * FROM users WHERE id = ? 22 ms 5.9%
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 2.7%
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 > ? 21 ms 5.7%
layouts/application 23 ms 6.2%
home/index 15 ms 4.1%
users/index 21 ms 5.7%
home#slow 370 ms 100.0%
layouts/application 17 ms 4.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 9.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 6.8%
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 > ? 25 ms 6.8%
home#slow 370 ms 100.0%
posts/show 16 ms 4.3%
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... 2 ms 0.5%
users/index 21 ms 5.7%
home#slow 370 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 16 ms 4.3%
SELECT * FROM users WHERE id = ? 1 ms 0.3%
users/index 8 ms 2.2%
home#slow 370 ms 100.0%
home#slow 370 ms 100.0%
SELECT * FROM users WHERE id = ? 8 ms 2.2%
home/index 36 ms 9.7%
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 > ? 24 ms 6.5%
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... 6 ms 1.6%