Request Details

Route
/slow GET
Timestamp
Sep 15, 2026 10:26 PM
Duration
435.18 ms
Status
204
Response Size
83 KB
Error
No

Performance Breakdown

Database
7.2% (15 queries)
View Rendering
1.8%
Application Logic
91.1%
Other Operations
0.0%
Total Operations
27
Slowest Operation
435.18 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 955.9ms 1911.7ms 2867.6ms 3823.4ms

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 435 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 19 ms 4.4%
home#slow 435 ms 100.0%
home#slow 435 ms 100.0%
home#slow 435 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 13 ms 3.0%
posts/show 15 ms 3.4%
SELECT * FROM posts WHERE created_at > ? 6 ms 1.4%
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 > ? 19 ms 4.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 5.7%
SELECT * FROM posts WHERE created_at > ? 9 ms 2.1%
home#slow 435 ms 100.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 9 ms 2.1%
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... 7 ms 1.6%
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... 32 ms 7.4%
SELECT name FROM users 31 ms 7.1%
posts/show 6 ms 1.4%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 4.8%
users/index 15 ms 3.4%
home#slow 435 ms 100.0%
home#slow 435 ms 100.0%
home#slow 435 ms 100.0%
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... 31 ms 7.1%
SELECT * FROM posts WHERE created_at > ? 23 ms 5.3%
home/index 32 ms 7.4%
SELECT name FROM users 23 ms 5.3%
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... 6 ms 1.4%