[KAFKA-1115] producer performance affected by trace/debug calls

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Incomplete
• Affects Version/s: 0.8.0
• Component/s: producer
• Assignee: Francois Saint-Jacques
• Reporter: Francois Saint-Jacques
• Created: 01/Nov/13 21:20
• Updated: 07/Nov/13 01:56
• Resolved: 07/Nov/13 01:56

Description

After investigating high CPU usage on some producers in production, we found out that a lot of time was passed in string construction for logging of DEBUG and TRACE level.

This patch removes most of the logging calls, on our systems it cuts CPU usage down to half of what it used to be.

Note that this is a significant boost in performance for environment where there are thousands of msg/s.