Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 12:51 AM
Duration
382.05 ms
Status
200
Response Size
68 KB
Error
No

Performance Breakdown

Database
4.3% (10 queries)
View Rendering
5.9%
Application Logic
89.8%
Other Operations
0.0%
Total Operations
26
Slowest Operation
382.05 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 851.4ms 1702.7ms 2554.1ms 3405.4ms

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#slow 382 ms 100.0%
home#slow 382 ms 100.0%
posts/show 10 ms 2.6%
users/index 37 ms 9.7%
home#slow 382 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 1 ms 0.3%
users/index 25 ms 6.5%
home#slow 382 ms 100.0%
posts/show 30 ms 7.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 3.9%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 34 ms 8.9%
home#slow 382 ms 100.0%
SELECT COUNT(*) FROM comments WHERE post_id = ? 24 ms 6.3%
home/index 19 ms 5.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 7 ms 1.8%
home#slow 382 ms 100.0%
home#slow 382 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... 5 ms 1.3%
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 4.4%
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 > ? 14 ms 3.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 1 ms 0.3%
users/index 36 ms 9.4%
users/index 36 ms 9.4%
home#slow 382 ms 100.0%
SELECT name FROM users 30 ms 7.9%
posts/show 8 ms 2.1%